Error code E0627
A yield expression was used outside of the coroutine literal.
Erroneous code example:
#![feature(coroutines, coroutine_trait)] fn fake_coroutine() -> &'static str { yield 1; return "foo" } fn main() { let mut coroutine = fake_coroutine; }
The error occurs because keyword yield
can only be used inside the coroutine
literal. This can be fixed by constructing the coroutine correctly.
#![feature(coroutines, coroutine_trait)] fn main() { let mut coroutine = || { yield 1; return "foo" }; }