/variant_count

Derive macro for enum which adds to it the count of variants.

Primary LanguageRustMIT LicenseMIT

Enum variant count

Crates.io Docs

This crate provides VariantCount derive macro for enum which adds to it the VARIANT_COUNT constant, containing count of enum variants.

The VariantCount usage example:

#[derive(VariantCount)]
enum Test {
    First(i32),
    Second(Option<String>),
    Third,
}

assert_eq!(Test::VARIANT_COUNT, 3);

Usage

If you're using Cargo, just add it to your Cargo.toml:

[dependencies]
variant_count = "1.1"

License

MIT