15 lines
526 B
Rust
15 lines
526 B
Rust
|
fn foo1(s: &str) -> impl Iterator<Item = String> + '_ {
|
||
|
|
None.into_iter()
|
||
|
|
.flat_map(move |()| s.chars().map(|c| format!("{}{}", c, s)))
|
||
|
|
//~^ ERROR captured variable cannot escape `FnMut` closure body
|
||
|
|
//~| HELP consider adding 'move' keyword before the nested closure
|
||
|
|
}
|
||
|
|
|
||
|
|
fn foo2(s: &str) -> impl Sized + '_ {
|
||
|
|
move |()| s.chars().map(|c| format!("{}{}", c, s))
|
||
|
|
//~^ ERROR lifetime may not live long enough
|
||
|
|
//~| HELP consider adding 'move' keyword before the nested closure
|
||
|
|
}
|
||
|
|
|
||
|
|
fn main() {}
|