Trait UnitEnum

pub trait UnitEnum {
    type Unit: Debug + Clone + Copy + PartialEq + Eq + PartialOrd + Ord + Hash;

    // Required methods
    fn to_unit(&self) -> Self::Unit;
    fn unit_iter() -> Box<dyn Iterator<Item = Self::Unit>>;
}

A utility trait for associating a data enum with a unit enum that has the same variants.

Required Associated Types

type Unit: Debug + Clone + Copy + PartialEq + Eq + PartialOrd + Ord + Hash

An enum with the same variants as the implementor but without any data.

Required Methods

fn to_unit(&self) -> Self::Unit

Turn this type into it’s unit enum.

fn unit_iter() -> Box<dyn Iterator<Item = Self::Unit>>

Iterate over the unit variants.

Dyn Compatibility

This trait is not dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.

Implementations on Foreign Types

impl UnitEnum for ()

Needed as a base case for ignoring types.

type Unit = ()

fn to_unit(&self) -> <() as UnitEnum>::Unit

fn unit_iter() -> Box<dyn Iterator<Item = <() as UnitEnum>::Unit>>

Implementors