3 #![feature(const_impl_trait, generators, generator_trait, type_alias_impl_trait)]
5 use std::ops::Generator;
7 type GenOnce<Y, R> = impl Generator<Yield = Y, Return = R>;
9 const fn const_generator<Y, R>(yielding: Y, returning: R) -> GenOnce<Y, R> {
17 const FOO: GenOnce<usize, usize> = const_generator(10, 100);