Instance Method

prepend(_:)

Prefixes the output of a publisher with the specified sequence.

Declaration

func prepend(_ elements: (A.Output, B.Output, C.Output, D.Output)...) -> Publishers.Concatenate<Publishers.Sequence<[(A.Output, B.Output, C.Output, D.Output)], A.Failure>, Publishers.Zip4<A, B, C, D>>

Parameters

elements

The elements to publish before this publisher’s elements.

Return Value

A publisher that prefixes the specified elements prior to this publisher’s elements.