Module once 

Yielding items exactly once.

Structs

Once

Represents non-empty iterators that yield the given value exactly once.

OnceWith

Represents non-empty iterators that yield the value computed from the given function exactly once.

Functions

once

Creates Once<T>, non-empty iterator that yields the given value exactly once.

once_with

Creates OnceWith<T> non-empty iterator that yields the value computed from the given function exactly once.