Trait enum_collections::Enumerated

pub trait Enumerated {
    fn position(self) -> usize;
    fn len() -> usize;
}

Provides means to map enum values to positions in arrays backing an EnumMap/EnumTable. Not intended to be implemented by hand. Deriving it with #[derive(Enumerated)] attribute macro is preferred.

use enum_collections::Enumerated;
#[derive(Enumerated)]
enum Letter {
    A,
    B,
}

Required Methods

fn position(self) -> usize

Maps an enum to a unique position in an array.

fn len() -> usize

Total number of values in an Enum.

Implementors