Function std::iter::from_generator

pub fn from_generator<G>(
    generator: G
) -> impl Iterator<Item = <G as Generator<()>>::Yield> where
    G: Generator<(), Return = ()> + Unpin, 

🔬 This is a nightly-only experimental API. (iter_from_generator #43122)

Creates a new iterator where each iteration calls the provided generator.

Similar to iter::from_fn.

Examples

#![feature(generators)]
#![feature(iter_from_generator)]

let it = std::iter::from_generator(|| {
    yield 1;
    yield 2;
    yield 3;
});
let v: Vec<_> = it.collect();
assert_eq!(v, [1, 2, 3]);