Instance Method

tryLast(where:)

Publishes only the last element of a stream that satisfies an error-throwing predicate closure, after the stream finishes.

Declaration

func tryLast(where predicate: @escaping (Upstream.Output) throws -> Bool) -> Publishers.TryLastWhere<Publishers.TryLastWhere<Upstream>>

Parameters

predicate

A closure that takes an element as its parameter and returns a Boolean value that indicates whether to publish the element.

Return Value

A publisher that only publishes the last element satisfying the given predicate.

Discussion

If the predicate closure throws, the publisher fails with the thrown error.