Trait Singleton 

pub trait Singleton {
    type Item;

    // Required method
    fn singleton(item: Self::Item) -> Self;
}

A type that can be instantiated via a single item - the kindred spirit to Default.

Required Associated Types

type Item

Required Methods

fn singleton(item: Self::Item) -> Self

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.

Implementors

impl<K, V> Singleton for NEIndexMap<K, V>

where K: Eq + Hash,

type Item = (K, V)

impl<K, V> Singleton for NEMap<K, V>

where K: Eq + Hash,

type Item = (K, V)

impl<T> Singleton for NESet<T>

where T: Eq + Hash,

type Item = T

impl<T> Singleton for NEVec<T>

type Item = T