Box<T>

The Box<T> type in Rust is a smart pointer that allows heap allocation for values, enabling efficient management of large data or data with unknown sizes at compile time.

In this challenge, you'll work with a custom struct Animal and use Box<T> to manage its memory. You will also implement two functions to access the struct's fields by dereferencing the boxed instance.

Your Task

Implement the create_animal function to return a Box<Animal> containing a new Animal instance.
Define another function, access_animal, that takes a Box<Animal> and returns a tuple (String, u8) representing the animal's name and age. Use dereferencing to access the fields.

Hints

Click here to reveal hints

To create a boxed struct, use Box::new(struct_instance).
Use the * operator to dereference the box and access its value.

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Solutions

AKA.MoneyTaker

M4Bo2

2 days ago

3.68ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code hereImplement the create_animal function to return a Box<Animal> containing a new Animal instance.
Box::new(Animal{
    name:name.to_string(),
    age,
})
// Define another function, access_animal, that takes a Box<Animal> and returns a tuple (String, u8) representing the animal's name and age. Use dereferencing to access the fields.
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name,animal.age)
    // Your code here
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

manuelmj

5 days ago

3.77ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal{
        name: String::from(name), 
        age
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

automata-studio

5 days ago

4.22ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal {
        name: name.to_string(),
        age
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Dyaa Adel

dyaa-adel

6 days ago

4.01ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(
        Animal {
            name: name.to_string(),
            age
        }
    )
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    ((*animal).name,(*animal).age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Ayushman Rathore

Spartan09

7 days ago

3.90ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal { name: name.into(), age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age) 
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Marco-Normal

8 days ago

4.07ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(
        Animal{
            name: name.to_string(),
            age
        }
    )
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

iamforgettable

9 days ago

3.78ms

88.18kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new( Animal {
        name: name.to_string(),
        age
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name.to_owned(), animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

ludovicknecht

9 days ago

3.26ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(
        Animal {
            name: name.into(),
            age,
        }
    )
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Jun Huang

leemars

9 days ago

3.93ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal { name: name.into(), age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Denis SOURON

Brack0

10 days ago

5.50ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}

Algorab

11 days ago

3.62ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal{
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Kyle Diaz

kylediaz

12 days ago

3.57ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal{name: name.to_string(), age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    ((*animal).name, (*animal).age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Jordan

Jordan-Haidee

12 days ago

4.11ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal {name: name.to_string(), age: age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Muhammad-Dennis

12 days ago

3.98ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    let animal = Animal {
        name: name.to_string(),
        age
    };
    Box::new(animal)
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Nikita Smirnov

Nismirno

13 days ago

3.93ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Kenneth Love

kennethlove

14 days ago

3.46ms

88.18kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal { name: name.to_string(), age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name.to_string(), animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Shafer Hess

shafer-hess

14 days ago

3.32ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal { name: name.to_string(), age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

alemack17

15 days ago

5.03ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal{name: name.to_string(),age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name,animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Christopher Nielson

c-nielson

16 days ago

3.52ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    let Animal { name, age } = *animal;
    (name, age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

delxs

17 days ago

3.73ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal {name: name.to_string(), age: age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

delxs

17 days ago

3.40ms

88.18kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal {name: name.to_string(), age: age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    ((*animal.name).to_string(), animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

kosay

sarub0b0

19 days ago

3.44ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal { name: name.to_string(), age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Léa Narzis

lean-apple

20 days ago

4.14ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

rawar089

20 days ago

3.92ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new( Animal {
        name: name.to_string() ,
        age 
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

rawar089

20 days ago

4.31ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new( Animal {
        name: name.to_string() ,
        age 
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    ((*animal).name, (*animal).age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Elliott Draper

ejdraper

21 days ago

4.14ms

88.18kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    return Box::new(Animal {
        name: name.to_string(),
        age,
    });
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    return (animal.name.to_string(), animal.age);
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Oebelus

oebelus

21 days ago

4.44ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Justin Maillet

justy777

23 days ago

5.94ms

87.57kb

#[derive(Default)]
pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal{name: name.into(), age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    ((*animal).name, (*animal).age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Jim Lawton

jimlawton

23 days ago

3.64ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    ((*animal).name, (*animal).age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Jonathan Voss

jvoss

24 days ago

3.46ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal{ name: name.to_string(), age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

エヴァンゲリオン

Lu-zihang

24 days ago

5.01ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {name: name.to_string(), age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

Stefan Roas

sroas

24 days ago

3.83ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal {
        name: name.to_string(),
        age,
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

TaiPoole

a month ago

5.04ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {name: name.to_string(), age})
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

dawwestk

a month ago

3.77ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    // Your code here
    Box::new(Animal { name: name.to_string(), age: age })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}

PangoSea

kapaseker

a month ago

4.48ms

87.57kb

pub struct Animal {
    pub name: String,
    pub age: u8,
}
pub fn create_animal(name: &str, age: u8) -> Box<Animal> {
    Box::new(Animal {
        name:name.to_string(),
        age
    })
}
pub fn access_animal(animal: Box<Animal>) -> (String, u8) {
    // Your code here
    (animal.name, animal.age)
}
// Example usage
pub fn main() {
    let animal = create_animal("Leo", 5);
    let (name, age) = access_animal(animal);
    println!("Animal's name: {}, age: {}", name, age);
}