Instance Method

prepend(_:)

Prefixes the output of a publisher with the specified sequence.

Declaration

func prepend(_ elements: (Output0, Output1)...) -> Publishers.Concatenate<Publishers.Sequence<[(Output0, Output1)], Upstream.Failure>, Publishers.MapKeyPath2<Upstream, Output0, Output1>>

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.