Contents

next(isolation:)

Produces the next element in the filter sequence.

Declaration

mutating func next(isolation actor: isolated (any Actor)?) async throws(AsyncFilterSequence<Base>.Failure) -> Base.Element?

Discussion

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