How to use strum crate in Rust enum derive macros

Add the strum crate to your Cargo.toml and use the #[derive] macro with specific traits like Display or EnumIter on your enum to generate helper methods.

[dependencies]
strum = "0.26"
strum_macros = "0.26"

use strum_macros::{Display, EnumIter};

#[derive(Display, EnumIter)]
enum Color {
    Red,
    Blue,
}

fn main() {
    println!("{:?}", Color::Red); // Prints "Red"
    for color in Color::iter() {
        println!("{:?}", color);
    }
}

The strum crate is a tool that automatically generates useful functions for your custom data types called enums. Instead of writing repetitive code to convert your enum values into text or loop through them, you simply add a small tag to your definition. It works like a spell that instantly gives your data type new superpowers, saving you time and reducing errors.