Enumoid

This crate is a Rust library which provides containers indexed by enums.

Dependency

[dependencies]
enumoid = "0.1"

Using Enumoid

The Enumoid trait provides a mapping between the values which inhabit a type and the integers between 0 and n, where n is the number of distinct values. This is used to provide several container data structures backed by fixed-size arrays and generic over an Enumoid index of type T.

For example, a total mapping:

let mut map = EnumMap::<FooBar, String>::new();
map[FooBar::Foo] = "Hello".to_string();

The Enumoid trait can be implemented for any enum type using the Enumoid derive macro.

#[derive(Enumoid)]
enum FooBar { Foo, Bar }