Day 5: Parsing naughty-list.csv

The elves stared at their screens. They had just written the Kid struct and were testing it with Santa’s data.

But something was wrong with the data, Prancer leaned back, smirking. "We forgot something obvious, didn’t we? The data’s raw strings—we need to parse it first."

Alice,10,2
Bob,5,5
Charlie,1,9

"We need to create another function," Prancer continued. "to parse the CSV rows into Kid structs."

Blitzen slammed his mug down. "And since Santa put me in charge of this project, I’m naming the function. It’s going to be called parse_row."

An elf from the back muttered just loud enough to hear, "Ugh, he thinks he’s better than us because Santa made him lead."

Blitzen shot them a look. "I heard that. If you’ve got a better name, I’m listening."

Silence.

"Exactly. parse_row it is."

The Frustration

Blitzen paced. "We need a function that takes a CSV row, splits it, and converts it into a Kid. Name is easy—it stays a String. The good and bad deeds, though, need to be parsed to u32."

"But what if the row has garbage data?" asked an elf, holding up a note with Charlie,,9 scribbled on it.

Prancer rolled his eyes. "Obviously, we handle errors. No .unwrap() shortcuts."

The Task

Blitzen wants you to create an associated function for the Kid struct and name it parse_row. It should take a CSV row as a &str and return a Result<Kid, &'static str>. The function should:

Split the CSV row into parts.
Extract the name as a String.
Parse the second and third fields as u32 for good and bad deeds.
Finally create a Kid struct using the new() associated function we created earlier.

Hints

If you're stuck, here are some hints to help guide you:

Click to show hints

Split the Row Use split(',') to divide the CSV row into parts. let fields = row.split(',');
Get Next Field Get the next field with next(), it's going to return an Option<&str>.
Must be mutable The next() method requires a mutable reference to the iterator. So make it mutable, let mut fields = row.split(',');.
Transform Option to Result Use ok_or(&str) to convert the Option to a Result. e.g., fields.next().ok_or("Missing field").
Propagate Errors (optional) Use ? to propagate errors. e.g., fields.next().ok_or("Missing field")?.
Create a String After you get access to the &str use the to_string() method to make it a String and have Ownership.
Parse Numbers Parse the second and third fields as u32 for good and bad deeds. Use .parse(), you can either turbofish parse::<u32>() or assign a type to the variable let good_deeds: u32 = fields.next().ok_or("Missing field")?.parse();.
Map the Error The error from the parse() method can't be propagated directly, you need to map it to the return types error type &'static str using map_err(). e.g., fields.next().ok_or("Missing field")?.parse().map_err(|_| "Invalid good deeds")?.
Create the Kid Pass the extracted values to Kid::new to build the Kid struct.
Return a Result Use Ok for success and meaningful error messages (like "Invalid good deeds") for failures.

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Solutions

Garrett

fieldgm6

6 minutes ago

4.08ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut x = csv_row.split(',');
        let name = x.next().ok_or("Error: Bad data, no first input")?.to_string();
        let good_deeds = x.next().ok_or("Error: Bad data, no second input")?.parse::<u32>().map_err(|_| "Error mapping input type")?;
        let bad_deeds = x.next().ok_or("Error: Bad data, no third input")?.parse::<u32>().map_err(|_| "Error mapping input type")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

rahulnene

15 minutes ago

6.37ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut row_vals = csv_row.split(',');
        let name = row_vals.next().ok_or("Malformed name input")?.to_string();
        let good_deeds = row_vals.next().ok_or("Malformed Good Deeds input")?.parse::<u32>().map_err(|_| "Can't parse Good Deeds.")?;
        let bad_deeds = row_vals.next().ok_or("Malformed Bad Deeds input")?.parse::<u32>().map_err(|_| "Can't parse Bad Deeds.")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

recursivemaze

25 minutes ago

3.95ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut fields = csv_row.split(',');
        let name = fields.next().ok_or("Missing field")?.to_string();
        let good_deeds = fields.next().ok_or("No 2nd element")?.parse::<u32>().map_err(|_| "Error parsing")?;
        let bad_deeds = fields.next().ok_or("No 3nd element")?.parse::<u32>().map_err(|_| "Error parsing")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Holger Rapp

SirVer

42 minutes ago

4.03ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut it = csv_row.split(',');
        let name = it.next().ok_or("No first element")?.to_string();
        let good_deeds = it.next().ok_or("No 2nd element")?.parse::<u32>().map_err(|_| "Error parsing")?;
        let bad_deeds = it.next().ok_or("No 3nd element")?.parse::<u32>().map_err(|_| "Error parsing")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Ljungg

an hour ago

4.40ms

89.29kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let data = csv_row.split(",").collect::<Vec<&str>>();
        if data.len() != 3 {
            return Result::Err("Unexpected amount of splits. Expected 3, got: {data.len()}");
        }
        let name = data[0];
        let good_deeds = data[1]
            .parse::<u32>()
            .map_err(|_| "Failed to parse good_deeds")?;
        let bad_deeds = data[2]
            .parse::<u32>()
            .map_err(|_| "Failed to parse bad_deeds")?;
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Ljungg

an hour ago

3.85ms

89.29kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let data = csv_row.split(",").collect::<Vec<&str>>();
        if data.len() < 3 {
            return Result::Err("Fewer than 3 splits");
        }
        let name = data[0];
        let good_deeds = data[1]
            .parse::<u32>()
            .map_err(|_| "Failed to parse good_deeds")?;
        let bad_deeds = data[2]
            .parse::<u32>()
            .map_err(|_| "Failed to parse bad_deeds")?;
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Tobias Vicenti

SchnobiTobi

an hour ago

29.90ms

89.29kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let split: Vec<&str> = csv_row.split(',').collect();
        if split.len() < 3  {
            return Err("Invalid length")
        }
        let good_deeds: u32 = split[1].trim().parse().map_err(|_| "Invalid Arguments")?;
        let bad_deeds: u32 = split[2].trim().parse().map_err(|_| "Invalid Arguments")?;
        Ok(Self::new(split[0].to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

rawar089

2 hours ago

4.28ms

89.30kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
let row: Vec<&str>= csv_row.split(',').collect();
        let name = row.get(0).ok_or("Missing field")?;
        let good_deeds = row.get(1).ok_or_else(|| "Missing field")?;
        let good_deeds: u32 = good_deeds.trim().parse().map_err(|_| "Invalid good_deeds")?;
        let bad_deeds  = row.get(2).ok_or_else(|| "Missing field")?;
        let bad_deeds: u32  = bad_deeds.trim().parse().map_err(|_| "Invalid bad deeds ")?;
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Alan Kleber

alankle

2 hours ago

4.26ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let row = csv_row.split(",").collect::<Vec<&str>>();
        if row.len() != 3 {return Err("Error csv fields");}
        
        let good_deeds: u32 = row[1].parse().map_err(|_| "good deeds is not a number")?;
        let bad_deeds: u32 = row[2].parse().map_err(|_| "bad_deeds is not a number")?;
        let name: String = row[0].trim().parse().map_err(|_| "Error in the name")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
    
}

Len Remmerswaal

LenRemmerswaal

2 hours ago

4.14ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut parts = csv_row.split(',');
        let name = if let Some(nm) = parts.next() {
            nm.to_string()
        } else {
            return Err("First element of csv_row (name) missing");
        };
        let good_deeds = if let Some(gd) = parts.next() {
            gd
        } else {
            return Err("Only a name was found, no deeds counts");
        };
        let bad_deeds = if let Some(bd) = parts.next() {
            bd
        } else {
            return Err("Bad deeds count missing.");
        };
        let good_deeds = match good_deeds.parse::<u32>() {
            Ok(gd) => gd,
            Err(_) => return Err("Cannot parse good deeds"),
        };
        let bad_deeds = match bad_deeds.parse::<u32>() {
            Ok(bd) => bd,
            Err(_) => return Err("Cannot parse bad deeds"),
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

mrsalo

3 hours ago

7.72ms

89.34kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts: Vec<String> = csv_row.split(",").map(|x| x.trim().into()).collect();
        let (name, good_deeds, bad_deeds) = match &parts[..] {
            [n, g, b] => (
                n, 
                g.parse::<u32>().or(Err("Cannot parse"))?,
                b.parse::<u32>().or(Err("Cannot parse"))?,
            ),
            [..] => Err("wrong format of row")?
        };
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

PowVT

3 hours ago

10.10ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        let row: Vec<&str> = csv_row.split(",").collect();
        if row.len() != 3 || row.iter().any(|&x| x.is_empty()) {
            return Err("Invalid row format");
        }
        let name = row[0].to_string();
        let good_deeds = row[1].parse::<u32>()
            .map_err(|_| "good deed is not a number")?;
        let bad_deeds = row[2].parse::<u32>()
            .map_err(|_| "bad deed is not a number")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Doug Morris

puckdoug

4 hours ago

3.90ms

90.28kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts = csv_row.split(",");
        let collection: Vec<&str> = parts.collect();
        if collection.len() < 3 {
            return Err("Not enough arguments: name, good, bad");
        }
        let name: String = match collection[0].trim().parse() {
            Ok(n) => n,
            Err(_) => return Err("Bad Name"),
        };
        let good_deeds: u32 = match collection[1].trim().parse() {
			Ok(num) => num,
			Err(_) => return Err("Bad Good Deeds"),
		};
        let bad_deeds: u32 = match collection[2].trim().parse() {
            Ok(num) => num,
            Err(_) => return Err("Bad Bad Deeds"),
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Alessandro Gasbarroni

Lakier15

4 hours ago

6.48ms

89.29kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut elements: Vec<_> = csv_row.split(",").collect();
        if elements.len() != 3 {
            return Err("not enough elements");
        }
        
        let bad_deeds = elements.pop().ok_or("no bad deeds")?;
        let bad_deeds = str::parse::<u32>(bad_deeds).map_err(|_| "garbled bad deeds")?;
        let good_deeds = elements.pop().ok_or("no good deeds")?;
        let good_deeds = str::parse::<u32>(good_deeds).map_err(|_| "garbled good deeds")?;
        let name = elements.pop().ok_or("no name")?.to_owned();
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Ido Barkan

barkanido

6 hours ago

3.64ms

89.30kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
#[derive(Debug)]
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts: Vec<&str> = csv_row.split(',').take(3).collect();
        let name = parts.get(0).ok_or_else(|| "not enough parts to split")?;
        let good_deeds = parts.get(1).ok_or_else(|| "not enough parts to split")?;
        let good_deeds: u32 = good_deeds
            .parse()
            .map_err(|_| "failed to parse good deeds")?;
        let bad_deeds = parts.get(2).ok_or_else(|| "not enough parts to split")?;
        let bad_deeds: u32 = bad_deeds.parse().map_err(|_| "failed to parse bad deeds")?;
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

0x776a

midnightexigent

7 hours ago

4.61ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut iter = csv_row.splitn(3, ',');
        let name = iter.next().ok_or("expected name")?.to_owned();
        let good_deeds = iter.next().ok_or("expected good_deeds")?.parse().map_err(
            |_| "bad data"
        )?;
        let bad_deeds = iter.next().ok_or("expected bad_deeds")?.parse().map_err(|_| "bad data")?;
        
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Sergei Barbarash

sgt

7 hours ago

4.23ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let values:Vec<&str> = csv_row.split(',').collect();
        if values.len() != 3 {
            return Err("Invalid CSV row");
        }
        let name = values[0].to_string();
        let good_deeds = values[1].parse::<u32>().map_err(|_| "parse error")?;
        let bad_deeds = values[2].parse::<u32>().map_err(|_| "parse error")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Jonas

mousecat98

9 hours ago

3.92ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        let parts = csv_row.split(",").collect::<Vec<&str>>();
        if parts.len() != 3 {
            return Err("Wrong input format.")
        }
        let name = String::from(parts[0]);
        let good_deeds = parts[1].parse::<u32>().map_err(|_| "Invalid format.")?;
        let bad_deeds = parts[2].parse::<u32>().map_err(|_| "Invalid format.")?;
        // 🎁 Your code here! 🎁
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Jonas

mousecat98

9 hours ago

6.19ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        let parts = csv_row.split(",").collect::<Vec<&str>>();
        if parts.len() < 3 {
            return Err("wrong format.")
        }
        let name = String::from(parts[0]);
        let good_deeds = match parts[1].parse::<u32>() {
            Ok(value) => value,
            Err(_) => return Err("failed to parse.")
        };
        let bad_deeds = match parts[2].parse::<u32>() {
            Ok(value) => value,
            Err(_) => return Err("failed to parse.")
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Romain Perier

rperier

10 hours ago

4.31ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let Some((name, deeds)) = csv_row.split_once(',') else {
            return Err("input not seperated by ','")  
        };
        let Some((good_deeds, bad_deeds)) = deeds.split_once(',') else {
            return Err("invalid deeds format")
        };
        let good_deeds = good_deeds.parse::<u32>().map_err(|_| "Failed to parse good deeds")?;
        let bad_deeds = bad_deeds.parse::<u32>().map_err(|_| "Failed to parse bad deeds")?;
        Ok(Self::new(name.to_string(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Andrea Bergia

andreabergia

10 hours ago

3.71ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts: Vec<&str> = csv_row.split(",").collect();
        if parts.len() != 3 {
            Err("invalid line")
        } else {
            let name = parts[0].to_string();
            let good_deeds = parts[1].parse::<u32>().map_err(|_| "could not parse good deeds")?;
            let bad_deeds = parts[2].parse::<u32>().map_err(|_| "could not parse bad deeds")?;
            Ok(Self::new(name, good_deeds, bad_deeds))
        }
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Emil Kreutzman

ekreutz

10 hours ago

4.12ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut split_iter = csv_row.split(",");
        let name: String = split_iter.next()
            .ok_or("Bad name!")?.to_string();
        let good: u32 = split_iter.next()
            .ok_or("Good!")?.parse().map_err(|_| "Bad good!")?;
        let bad: u32 = split_iter.next()
            .ok_or("Bad!")?.parse().map_err(|_| "Bad bad!")?;
        Ok(Self::new(name, good, bad))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Sumit Guha (sumit03guha.eth)

sumit03guha

10 hours ago

4.46ms

89.30kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let splitted_vector = csv_row.split(",").collect::<Vec<&str>>();
        let mut splitted_vector_mut = splitted_vector.iter();
        let name = splitted_vector_mut
            .next()
            .ok_or("Missing field")?
            .to_string();
        let good_deeds = splitted_vector_mut
            .next()
            .ok_or("Missing field")?
            .parse::<u32>()
            .map_err(|_| "Invalid good deeds")?;
        let bad_deeds = splitted_vector_mut
            .next()
            .ok_or("Missing field")?
            .parse::<u32>()
            .map_err(|_| "Invalid bad deed")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

WuHan0608

11 hours ago

3.80ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let csv_rows: Vec<&str> = csv_row.split(',').collect();
        if csv_rows.len() != 3 {
            return Err("field size is not 3");
        }
        let name = csv_rows[0].to_string();
        let good_deeds = match csv_rows[1].parse::<u32>() {
            Ok(n) => n,
            Err(_) => return Err("failed to parse good_deeds"),
        };
        let bad_deeds = match csv_rows[2].parse::<u32>() {
            Ok(n) => n,
            Err(_) => return Err("failed to parse bad deeds"),
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Filippo De Bortoli

filippodebortoli

11 hours ago

4.53ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut csv_fields = csv_row.split(",");
        let name: String = csv_fields.next()
            .ok_or("Missing field")?
            .to_string();
        
        let good_deeds: u32 = csv_fields.next()
            .ok_or("Missing field")?
            .parse::<u32>()
            .map_err(|_| "Invalid deeds")?;
        let bad_deeds: u32 = csv_fields.next()
            .ok_or("Missing field")?
            .parse::<u32>()
            .map_err(|_| "Invalid deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

David Wretman

dwretman

11 hours ago

4.79ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts: Vec<&str> = csv_row.split(',').collect();
        if parts.len() != 3 {
            return Err("Uexpected data format");
        }
        let name = parts[0].to_string();
        let good_deeds = parts[1]
            .parse::<u32>()
            .map_err(|_| "Unable to parse good deeds")?;
        let bad_deeds = parts[2]
            .parse::<u32>()
            .map_err(|_| "Unable to parse good deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

torbenhardt

11 hours ago

3.84ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let parts: Vec<&str> = csv_row.split(',').collect();
        if parts.len() != 3 {
            return Err("Invalid CSV format. Expected 'Name,GoodDeeds,BadDeeds'");
        }
        let name = parts[0].trim().to_string();
        let good_deeds = parts[1]
            .trim()
            .parse::<u32>()
            .map_err(|_| "Failed to parse GoodDeeds as a positive number")?;
        let bad_deeds = parts[2]
            .trim()
            .parse::<u32>()
            .map_err(|_| "Failed to parse BadDeeds as a positive number")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Mario Caropreso

cmaruz

12 hours ago

6.06ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let values = csv_row
            .split(',')
            .collect::<Vec<&str>>();
        if values.len() != 3 {
            return Err("Invalid format for input CSV");
        }
        let name = values[0].to_string();
        let good_deeds = values[1].parse::<u32>();
        let bad_deeds = values[2].parse::<u32>();
        if good_deeds.is_err() || bad_deeds.is_err() {
            return Err("Invalid format for input CSV");
        }
        Ok(Self::new(
            name,
            good_deeds.ok().unwrap(),
            bad_deeds.ok().unwrap(),
        ))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Derek Chen-Becker

dchenbecker

12 hours ago

8.13ms

90.31kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let raw_parts: Vec<_> = csv_row.split(',').collect();
        let parts = raw_parts.as_slice();
        if parts.len() != 3 {
            return Err("Incorrect number of elements")
        }
        let name: String = parts[0].into();
        let good_deeds: u32 = parts[1].parse().map_err(|_| "Invalid good deeds")?;
        let bad_deeds: u32 = parts[2].parse().map_err(|_| "Invalid bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

theandi667

15 hours ago

9.48ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let pieces: Vec<_> = csv_row.split(',').collect();
        if pieces.len() != 3 {
            return Err("oops");
        }
        let name = pieces[0].to_string();
        let good_deeds: u32 = pieces[1].parse().map_err(|_| "oops")?;
        let bad_deeds: u32 = pieces[2].parse().map_err(|_| "oops")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

maruryota

15 hours ago

4.08ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut fields = csv_row.split(',');
        let name = fields.next().ok_or("Missing field")?.to_string();
        let good_deeds = fields
          .next()
          .ok_or("Missing good deeds")?
          .parse()
          .map_err(|_| "error")?;
        let bad_deeds = fields.next().ok_or("Missing good deeds")?.parse()
          .map_err(|_| "error")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Muhammad-Dennis

16 hours ago

3.72ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut split_text = csv_row.split(","); // this returns an iterator
        let name = match split_text.next() {
            Some(n) => n.to_string(),
            None => return Err("Missing name argument")
        };
        let good_deeds = match split_text.next() {
            Some(gd_str) => match gd_str.parse::<u32>() {
                Ok(value) => value,
                Err(_) => return Err("Failed to parse good deeds"),
            },
            None => return Err("Missing good deeds field"),
        };
        let bad_deeds = match split_text.next() {
            Some(bd_str) => match bd_str.parse::<u32>() {
                Ok(value) => value,
                Err(_) => return Err("Failed to parse bad deeds"),
            },
            None => return Err("Missing bad deeds field"),
        };
        
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

David Pathakjee

dpathakj

18 hours ago

3.66ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut split = csv_row.split(',');
        let name = split.next().ok_or("no name")?.to_string();
        let good_deeds = split.next().ok_or("no good deeds")?.parse().or(Err("unparseable good deeds"))?;
        let bad_deeds = split.next().ok_or("no bad deeds")?.parse().or(Err("unparseable bad deeds"))?;
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

David Paul Graham

dpgraham4401

18 hours ago

3.72ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut iter = csv_row.split(',');
        let name = iter.next().ok_or("Missing field")?.to_string();
        let good_deeds = iter
            .next()
            .ok_or("Missing field")?
            .parse()
            .map_err(|_| "Invalid good deeds")?;
        let bad_deeds = iter
            .next()
            .ok_or("Missing field")?
            .parse()
            .map_err(|_| "Invalid bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Georgios Tsoulis

unwrinkled

20 hours ago

11.03ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    // fn parse_u32()
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut split_csv_row = csv_row.split(',');
        let name: String = if let Some(name_str) = split_csv_row.next() {
            name_str.into()
        } else {
            return Err("name not given");
        };
        let good_deeds = if let Some(good_deeds_str) = split_csv_row.next() {
            match good_deeds_str.parse::<u32>() {
                Ok(num) => num,
                Err(_) => return Err("number couldn't be parsed"),
            }
        } else {
            return Err("good deeds not given");
        };
        let bad_deeds = if let Some(bad_deeds_str) = split_csv_row.next() {
            match bad_deeds_str.parse::<u32>() {
                Ok(num) => num,
                Err(_) => return Err("number couldn't be parsed"),
            }
        } else {
            return Err("bad deeds not given");
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Georgios Tsoulis

unwrinkled

20 hours ago

6.84ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    // fn parse_u32()
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut split_csv_row = csv_row.split(',');
        let name: String = if let Some(name_str) = split_csv_row.next() {
            name_str.into()
        } else {
            return Err("name not given");
        };
        let good_deeds = if let Some(good_deeds_str) = split_csv_row.next() {
            match good_deeds_str.parse::<u32>() {
                Ok(num) => num,
                Err(_) => return Err("number couldn't be parsed"),
            }
        } else {
            return Err("good deeds not given");
        };
        let bad_deeds = if let Some(bad_deeds_str) = split_csv_row.next() {
            match bad_deeds_str.parse::<u32>() {
                Ok(num) => num,
                Err(_) => return Err("number couldn't be parsed"),
            }
        } else {
            return Err("bad deeds not given");
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Nikhil Mukraj

NikhilMukraj

20 hours ago

3.86ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let split_string: Vec<&str> = csv_row.split(",").collect();
        if split_string.len() != 3 {
            return Err("Invalid row");
        }
        let name = split_string[0].to_string();
        let good_deeds = match split_string[1].parse::<u32>() {
            Ok(val) => val,
            Err(_) => return Err("Invalid deeds"),
        };
        let bad_deeds = match split_string[2].parse::<u32>() {
            Ok(val) => val,
            Err(_) => return Err("Invalid deeds"),
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Maximiliano Navarro Llaven

maxnavarrollaven

a day ago

4.91ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // Split the input CSV row by commas
        let mut fields = csv_row.split(',');
        // Extract the fields and handle missing data
        let name = fields.next().ok_or("Missing field for name")?.to_string();
        let good_deeds: u32 = fields.next().ok_or("Missing field for good deeds")?
            .parse().map_err(|_| "Invalid good deeds")?;
        let bad_deeds: u32 = fields.next().ok_or("Missing field for bad deeds")?
            .parse().map_err(|_| "Invalid bad deeds")?;
        // Construct a Kid struct using the extracted values
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds > 0 {
            return false;
        }
        let good_deeds_weighted = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds_weighted = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds_weighted / (good_deeds_weighted + bad_deeds_weighted);
        ratio >= 0.75
    }
}

sergepin

a day ago

5.12ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut parts = csv_row.split(",").map(str::trim);
        let name = parts
                    .next()
                    .ok_or("No Column for name")
                    ?.to_string();
        let good_deeds: u32 = parts
                            .next()
                            .ok_or("No column for good deeds")?
                            .parse()
                            .map_err(|_| "Invalid good deeds")?;
        let bad_deeds: u32 = parts
                                .next()
                                .ok_or("No column for bad deeds")?
                                .parse()
                                .map_err(|_| "Invalid bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

shell720

a day ago

3.90ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let input_vec: Vec<&str> = csv_row.split(',').collect();
        if input_vec.len() != 3{
            return Err("not parse csv");
        }
        let name = input_vec[0].to_string();
        let good_deeds: u32 = input_vec[1].parse().map_err(|_| "Invalid good deeds")?;
        let bad_deeds: u32 = input_vec[2].parse().map_err(|_| "Invalid bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Kada

Kada-quantum

a day ago

6.08ms

89.46kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let parts = csv_row.split(",").collect::<Vec<&str>>();
        if parts.len() != 3 {
            return Err("Invalid format");
        }
        let name = parts[0].to_string();
        let good_deeds = match parts[1].parse::<u32>() {
            Ok(n) => n,
            Err(e) => return Err(format!("Invalid format: {e}").leak()),
        };
        let bad_deeds = match parts[2].parse::<u32>() {
            Ok(n) => n,
            Err(e) => return Err(format!("Invalid format: {e}").leak()),
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Vabka

vabka

a day ago

3.85ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut parts = csv_row.split(',').map(|x|x.trim());
        let Some(name) = parts.next() else {
            return Err("no columns");
        };
        let Some(Ok(good_deeds)) = parts.next().map(|e|e.parse()) else {
            return Err("invalid good deeds");
        };
        let Some(Ok(bad_deeds)) = parts.next().map(|e|e.parse()) else {
            return Err("invalid bad deeds");
        };
        Ok(Self::new(name.to_owned(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Vabka

vabka

a day ago

4.70ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut parts = csv_row.split(',').map(|x|x.trim());
        let Some(name) = parts.next() else {
            return Err("no columns");
        };
        let Some(Ok(good_deeds)) = parts.next().map(|e|e.parse()) else {
            return Err("invalid good deeds");
        };
        let Some(Ok(bad_deeds)) = parts.next().map(|e|e.parse()) else {
            return Err("invalid bad deeds");
        };
        Ok(Self::new(name.to_owned(), good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

FRANCO

FrancoTorresSilva

a day ago

3.80ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        
        let fields:Vec<&str> = csv_row.split(",").collect();
        if fields.len() != 3 {
            return Err("Error");
        }
        let name = if fields[0].is_empty() {
            return Err("Error");
        } else {
            fields[0].to_string()
        };
    
        let good_deeds = match fields[1].trim().parse::<u32>() {
            Ok(value) => value,
            Err(_) => return Err("Error"),
        };
    
        let bad_deeds = match fields[2].trim().parse::<u32>() {
            Ok(value) => value,
            Err(_) => return Err("Error"),
        };
    
        Ok(Kid::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Miguel Rosas

MiguelRosgal

a day ago

4.10ms

90.44kb

use std::str::FromStr;
pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let columns: Vec<&str> = csv_row.split(',').collect();
        if columns.len() != 3 {
            return Err("Bad row");
        }
        let name = columns[0].to_string();
        let good_deeds = u32::from_str(columns[1])
            .or_else(|_| Err("Invalid good deeds column."))?;
        let bad_deeds = u32::from_str(columns[2])
            .or_else(|_| Err("Invalid bad deeds column."))?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Rostyslav Bohomaz

rostyq

a day ago

4.12ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut values = csv_row.split(",");
        let name = values.next().map(String::from).ok_or("expect name value")?;
        let good_deeds = values.next().map(|v| v.parse::<u32>().ok()).flatten().ok_or("expect good deeds")?;
        let bad_deeds = values.next().map(|v| v.parse::<u32>().ok()).flatten().ok_or("expect bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Micael Estrazulas Vianna

mEstrazulas

a day ago

3.69ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let mut row = csv_row.split(",");
        let name = row.next().ok_or("missing")?.to_string();
        let good_deeds: u32 = row.next().ok_or("missing")?.parse().map_err(|_| "Invalid good deeds")?;
        let bad_deeds: u32 = row.next().ok_or("missing")?.parse().map_err(|_| "Invalid good deeds")?;
        Ok(Self::new(name, good_deeds , bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Rémy Greinhofer

rgreinho

a day ago

4.06ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let row_parts: Vec<_> = csv_row.split(',').collect();
        let part_count = row_parts.len();
        if  part_count != 3 {
            return Err("Invalid part numbers: expected 3, got {part_count}")
        }
        let name = row_parts[0].to_string();
        let good_deeds = row_parts[1].parse::<u32>().map_err(|e| "cannot parse good deeds")?;
        let bad_deeds = row_parts[2].parse::<u32>().map_err(|e| "cannot parse bad deeds")?;
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

pabiadzinski

a day ago

4.01ms

89.24kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        let mut name = String::new();
        let mut good_deeds = None;
        let mut bad_deeds = None;
        for (index, value) in csv_row.split(',').enumerate() {
            match index {
                0 => name = value.to_string(),
                1 => good_deeds = value.parse::<u32>().ok(),
                2 => bad_deeds = value.parse::<u32>().ok(),
                _ => return Err("Invalid CSV format: Too many fields"),
            }
        }
        match (good_deeds, bad_deeds) {
            (Some(good), Some(bad)) => Ok(Self::new(name, good, bad)),
            _ => Err("Invalid CSV format: Could not parse good or bad deeds"),
        }
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}

Shane

m0nkey653

a day ago

4.16ms

90.44kb

pub const GOOD_WEIGHT: f32 = 1.0;
pub const BAD_WEIGHT: f32 = 2.0;
#[derive(Debug, PartialEq)]
pub enum Niceness {
    Nice(u32),
    Naughty,
}
pub struct Kid {
    pub name: String,
    pub niceness: Niceness,
}
impl Kid {
    pub fn parse_row(csv_row: &str) -> Result<Kid, &'static str> {
        // 🎁 Transform the CSV row into a Kid struct for Santa's list!
        // 🎅 Expected CSV: "Name,GoodDeeds,BadDeeds"
        //    Example: "Alice,3,1" -> name: "Alice", good_deeds: 3, bad_deeds: 1
        // 🎁 Your code here! 🎁
        let cells: Vec<&str> = csv_row.split(',').collect();
        if cells.len() != 3 { return Err("Bugger"); }
        let name = cells[0].to_string();
        
        
        let good_deeds_result = cells[1].parse::<u32>();
        let good_deeds = match good_deeds_result
        {
            Ok(good_deeds_num) => good_deeds_num,
            Err(_) => return Err("Wow!")
        };
        
        let bad_deeds_result = cells[2].parse::<u32>();
        let bad_deeds = match bad_deeds_result
        {
            Ok(bad_deeds_num) => bad_deeds_num,
            Err(_) => return Err("Wow!")
        };
        Ok(Self::new(name, good_deeds, bad_deeds))
    }
    pub fn new(name: String, good_deeds: u32, bad_deeds: u32) -> Self {
        let niceness = if Self::is_nice(good_deeds, bad_deeds) {
            Niceness::Nice(good_deeds)
        } else {
            Niceness::Naughty
        };
        Self { name, niceness }
    }
    pub fn is_nice(good_deeds: u32, bad_deeds: u32) -> bool {
        if good_deeds == 0 && bad_deeds == 0 {
            return false;
        }
        let good_deeds = good_deeds as f32 * GOOD_WEIGHT;
        let bad_deeds = bad_deeds as f32 * BAD_WEIGHT;
        let ratio = good_deeds / (good_deeds + bad_deeds);
        ratio >= 0.75
    }
}