25 lines
466 B
Rust
25 lines
466 B
Rust
#![deny(while_let_on_iterator)]
|
|
|
|
use std::iter::Iterator;
|
|
|
|
struct Foo;
|
|
|
|
impl Foo {
|
|
fn foo1<I: Iterator<Item = usize>>(mut it: I) {
|
|
while let Some(_) = it.next() {
|
|
println!("{:?}", it.size_hint());
|
|
}
|
|
}
|
|
|
|
fn foo2<I: Iterator<Item = usize>>(mut it: I) {
|
|
while let Some(e) = it.next() {
|
|
println!("{:?}", e);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn main() {
|
|
Foo::foo1(vec![].into_iter());
|
|
Foo::foo2(vec![].into_iter());
|
|
}
|