Function All

iterator.go:427–436

All tests if every element of the Iterator matches a predicate. An empty Iterator returns true.

(it Iterator[T], pred func(T) bool)

// All tests if every element of the Iterator matches a predicate. An empty
// Iterator returns true.
func All[T any](it Iterator[T], pred func(T) bool) bool {
	v := it.Next()
	for v.IsSome() {
		if !pred(v.Unwrap()) {
			return false
		}
		v = it.Next()
	}
	return true
}

// Any tests if any element of the Iterator matches a predicate. An empty
// Iterator returns false.