The Rust Strum crate provides macros for working with enums. The crate provides several useful macros that can be used to derive implementations for various traits on enums.
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EnumString - Derives the ability to parse strings into enum variants using the FromStr trait.
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EnumVariantNames - Derives a method that returns a list of the enum's variant names as strings.
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Display - Derives the ability to convert enum variants to strings using the Display trait.
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AsRefStr - Derives the ability to convert enum variants to string slices using the AsRef trait.
Example:
use strum_macros::EnumString;
#[derive(Debug, EnumString)]
enum Color {
Red,
Green,
Blue,
}
fn main() {
let color = "Red".parse::<Color>().unwrap();
println!("{:?}", color);
}This example uses the EnumString macro to derive the FromStr trait for the Color enum. This enables us to parse the string "Red". The unwrap() method handles any parse errors.