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Enum variant count

This crate provides the VariantCount derive macro, which adds to an enum a VARIANT_COUNT constant holding the number of its 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 = "1.2"

License

Licensed under either of

Apache License, Version 2.0, (LICENSE-APACHE or apache.org/licenses/LICENSE-2.0)
MIT license (LICENSE-MIT or opensource.org/licenses/MIT)

at your option.