enum-info

Overview

enum-info is a simple crate intended for the niche scenario where you need to know the number of variants an enum has, as well as having a list of each variant (for enums consisting of only unit variants).

Example

Imagine making a game where you can select between multiple characters — in Rust, this selection would be represented by an enum.

In order to make a character select menu that can seamlessly handle the addition of new characters, you'd usually have to track all the members of the enum and manually update the size of some array; however, with this library, it's as simple as:

#[enum_info]
enum Characters {
	Katty,
	Jax
}

// ...

assert_eq!(Characters::variant_count(), 2);
assert_eq!(Characters::VARIANTS, [Characters::Katty, Characters::Jax]);