Trait makepad_vector::internal_iter::InternalIterator

source · [−]

pub trait InternalIterator {
    type Item;

    fn for_each<F>(self, f: &mut F) -> bool
    where
        F: FnMut(Self::Item) -> bool;

    fn collect<F>(self) -> F
    where
        Self: Sized,
        F: FromInternalIterator<Self::Item>,
    { ... }
    fn map<R, F>(self, f: F) -> Map<Self, F>
    where
        Self: Sized,
        F: FnMut(Self::Item) -> R,
    { ... }
}

Expand description

A trait for internal iterators. An internal iterator differs from a normal iterator in that its iteration is controlled internally by the iterator itself, instead of externally by the calling code. This means that instead of returning a single item on each call to next, internal iterators call a closure for each item on a single call to for_each. This allows internal operators to be implemented recursively, something that is not possible with normal iterators.