Breaking News: Grepper is joining You.com. Read the official announcement!

rust enum values

Add Answer

John Appleseed answered on May 6, 2022 Popularity 9/10 Helpfulness 1/10

answer rust enum values

related rust enum with value

related enum in rust

rust enum values

Comment

enum MyEnum {
	Variant1 = 0,
    Variant2 = 4,
    Variant3 = 20
}

Popularity 9/10 Helpfulness 1/10 Language whatever

Source: Grepper

Tags: rust whatever

Link to this answer
Share Copy Link

Contributed on Mar 05 2024

John Appleseed

0 Answers Avg Quality 2/10

Closely Related Answers

rust enum with value

Comment

// method 1:

enum Enum {
	Foo, 	   // 0
    Bar = 9,   // 9
    Baz        // 10
}

// method 2: (for a string enum)

enum Enum {
    Foo,
    Bar,
    Baz,
}

impl std::fmt::Display for Enum {
    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
        let out = match self {
            Enum::Foo => "FOO",
            Enum::Bar => "BAR",
            Enum::Baz => "BAZ",
        };

        write!(f, "{}", out)
    }
}

impl std::str::FromStr for Enum {
    type Err = String;

    fn from_str(s: &str) -> Result<Self, Self::Err> {
        match s {
            "FOO" => Ok(Enum::Foo),
            "BAR" => Ok(Enum::Bar),
            "BAZ" => Ok(Enum::Baz),
            _ => Err(format!("Unknown enum value: {}", s)),
        }
    }
}

fn main() {
    let foo: Enum = "FOO".parse().unwrap();
    println!("{}", foo.to_string());
    let bar: Enum = "BAR".parse().unwrap();
    println!("{}", bar.to_string());
    let baz: Enum = "BAZ".parse().unwrap();
    println!("{}", baz.to_string());
    // let qux: Enum = "QUX".parse().unwrap(); // This will panic
    // println!("{}", qux);
}

Popularity 9/10 Helpfulness 2/10 Language whatever

Source: Grepper

Tags: rust

Link to this answer
Share Copy Link

Contributed on Aug 27 2023

John Appleseed

0 Answers Avg Quality 2/10

enum in rust

Comment

// as example a for a gender
enum Gender {
    MALE,
    FEMININE,
    DIVERS,
    NONE
}
// impl contains all functions and methods that will be implemented to your enum
impl Gender {...}
/*	It is possible to give the options variables as well.
	An example:
	
    enum Option<T> {
    	Some(T),
        None
    }
*/

Popularity 10/10 Helpfulness 2/10 Language rust

Source: Grepper

Tags: rust

Link to this answer
Share Copy Link

Contributed on May 06 2022

SnefDen

0 Answers Avg Quality 2/10

rust enum values

Contents

More Related Answers

rust enum values

Closely Related Answers

rust enum with value

enum in rust

Grepper

Documentation

Social

Legal

Contact

Oops, You will need to install Grepper and log-in to perform this action.