The Unit Type

In Rust, the unit type () is a type that has exactly one value, also written as (). It is used to indicate the absence of a meaningful value and is often seen in functions that do not return a value.

In this challenge, you will implement a function that prints a message and returns the unit type.

Your task

You need to implement the function print_message() -> () that prints "Hello, Rust!" to the console and returns the unit type.

Requirements

The print_message function should print "Hello, Rust!" to the console.
The function should return the unit type ().

Example

let result = print_message();
assert_eq!(result, ());

Editor not available on Mobile!

In order to solve the challenge, please visit this page on a desktop computer.

Solutions

Henry Tran

henrytranvn93

2 hours ago

3.49ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    ()
}

Henry Tran

henrytranvn93

2 hours ago

2.66ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    ()
}

Jatin

jatinpatel05

3 hours ago

3.04ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

Dmitry

Tankovod

12 hours ago

2.38ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    return ();
}

LyNyx

18 hours ago

3.39ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Luigi Terrone

LuigiTer

a day ago

2.54ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    return ();
}

Saverio Brancaccio

savbran

2 days ago

2.41ms

80.98kb

pub fn print_message() {
        println!("Hello, Rust!");
        // The unit type is used in rust to return a void/none value (no value)
        // If a function has no return type in its signature it returns the unit
        // type by default. For this reason this simple implementation works.
}

KuuShyn

2 days ago

2.43ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    ()
}

Heino Mortensen

hmortensen83

2 days ago

2.60ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!");
    ()
}

Joonho Kim

phyjoon

2 days ago

2.50ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!")
}

BrightTNut

3 days ago

2.44ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Karol Płatkowski

spoohie

3 days ago

2.58ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!")
}

Camiam144

3 days ago

2.47ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

ydiarra

4 days ago

2.99ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

0x0f1

Paul4673

4 days ago

2.72ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Max Muermann

maxvolumedev

4 days ago

2.79ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

dattruongdev

5 days ago

3.23ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

Regulus-Sun

5 days ago

2.53ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!");
    ()
}

Alexey Abramov

Mintstorm

5 days ago

2.72ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hellom Rust");
    return();
}

Sarthak Mishra

sithtsar

5 days ago

2.52ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

LouisMareschal

6 days ago

2.48ms

80.98kb

pub fn print_message() -> () {
    println!("hello, Rust!");
    return ();
}

LouisMareschal

6 days ago

2.72ms

80.98kb

pub fn print_message() -> () {
    println!("hello, Rust!");
}

Mohamed

Bitwise-01

6 days ago

2.51ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Noxyss

6 days ago

3.00ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    return ()
}

YUhyfe

7 days ago

2.39ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Kr0wZ

7 days ago

2.64ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    ()
}

DoughRing

7 days ago

3.15ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!");
    return ()
}

Michael Williams de la Bastida

MIWdlB

8 days ago

4.29ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

AviKupinsky

8 days ago

2.97ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!:");
}

Joonho Kim

phyjoon

8 days ago

2.55ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!")
    // TODO: Implement the function here
}

Lucop1911

9 days ago

2.58ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!(" ");
    ()
}

echo1faust

9 days ago

3.30ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

Jai

jsat97

9 days ago

2.78ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

vanos001

10 days ago

3.34ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    return ();
}

BoΠeShΔdϴw³

B0neShAd0w

11 days ago

2.44ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    ("Hello, Rust!");
}

yaniel-dr

11 days ago

2.79ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    print!("Hello, Rust!")
}

xxxxsk

11 days ago

3.13ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    ()
}

s.i

ssmi75

11 days ago

2.92ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

MysterOak

12 days ago

3.48ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    ()
}

nugen0x

12 days ago

2.57ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

mackson

mack14

12 days ago

2.65ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
    
}

zzispp

12 days ago

3.37ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    ()
}

ikatlinsky

12 days ago

3.02ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!");
    ()
}

Matt Hughes

mhughes72

12 days ago

2.29ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
}

Vivek Murali

Vivek-Murali

12 days ago

2.83ms

80.98kb

pub fn print_message() -> () {
   println!("Hello, Rust!")
}

Carlos

cjmo89

13 days ago

3.48ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!")
}

Alexey Lisov

BaldiSlayer

13 days ago

2.46ms

80.98kb

pub fn print_message() -> () {
    println!("Hello, Rust!")
}

Tri Nguyen

nguyentri

13 days ago

3.53ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    println!("Hello, Rust!");
    return ();
}

Felix Wolfsteller

fwolfst

13 days ago

2.95ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
}

0M3REXE

13 days ago

3.74ms

80.98kb

pub fn print_message() -> () {
    // TODO: Implement the function here
    ()
}