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pub
struct Filter<I, F>
where
I : LendingIterator,
F : FnMut(&'_ Item<'_, I>) -> bool,
{
pub(in crate)
iter: I,
pub(in crate)
should_yield: F,
}
#[gat]
impl<I, F> LendingIterator
for Filter<I, F>
where
I : LendingIterator,
F : FnMut(&'_ Item<'_, I>) -> bool,
{
type Item<'next>
where
Self : 'next,
=
Item<'next, I>
;
fn next (
self: &'_ mut Filter<I, F>,
) -> Option<Item<'_, I>>
{
self.iter.find(&mut self.should_yield)
}
}