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use gat_std::iter::Iterator;
use gat_std_proc::gatify;
struct Custom(i32, i32);
impl Custom {
fn new() -> Custom {
Custom(10, 0)
}
}
impl Iterator for Custom {
type Item<'a> = &'a mut i32
where
Self: 'a;
fn next(&mut self) -> Option<Self::Item<'_>> {
if self.0 > 0 {
self.0 -= 1;
Some(&mut self.1)
} else {
None
}
}
}
fn main() {
let iter: Custom = Custom::new();
iter.touch(|val| {
**val += 1;
})
.for_each(|val| println!("{}", *val));
}
#[gatify]
fn _foo() {
// STD iterator
for _ in 0..10 {}
// Lending iterator
for _ in Custom::new() {}
}
#[gatify]
fn _bar<T: core::iter::IntoIterator>(val: T) {
for _ in val {}
}
#[gatify]
fn _baz<T: gat_std::iter::IntoIterator>(val: T) {
for _ in val {}
}
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