next

Produces the next element in the filter sequence.

iOS
13.0+
macOS
10.15+
tvOS
13.0+
watchOS
6.0+
mutating func next() async rethrows -> Base.Element?

This iterator calls next() on its base iterator; if this call returns nil, next() returns nil. Otherwise, next() evaluates the result with the predicate closure. If the closure returns true, next() returns the received element; otherwise it awaits the next element from the base iterator.