Documentation / @eventkit/base / pairwise

Function: pairwise()

function pairwise<T>(): OperatorFunction<T, [T, T]>

Groups pairs of consecutive emissions together and emits them as a tuple of two values. In other words, it will take the current value and the previous value and emit them as a pair.

Note: Because pairwise only emits complete pairs, the first emission from the source observable will be "skipped" since there is no previous value. This means that the output observable will always have one less emission than the source observable.

Type Parameters

Type Parameter
T

Returns

OperatorFunction<T, [T, T]>