rust/tests/ui/iterators/into-iter-on-arrays-2021.rs
2023-01-11 09:32:08 +00:00

33 lines
837 B
Rust

// check-pass
// edition:2021
use std::array::IntoIter;
use std::ops::Deref;
use std::rc::Rc;
fn main() {
let array = [0; 10];
// In 2021, the method dispatches to `IntoIterator for [T; N]`.
let _: IntoIter<i32, 10> = array.into_iter();
let _: IntoIter<i32, 10> = Box::new(array).into_iter();
// The `array_into_iter` lint doesn't cover other wrappers that deref to an array.
let _: IntoIter<i32, 10> = Rc::new(array).into_iter();
let _: IntoIter<i32, 10> = Array(array).into_iter();
// You can always use the trait method explicitly as an array.
let _: IntoIter<i32, 10> = IntoIterator::into_iter(array);
}
/// User type that dereferences to an array.
struct Array([i32; 10]);
impl Deref for Array {
type Target = [i32; 10];
fn deref(&self) -> &Self::Target {
&self.0
}
}