Instance Methodswift-algorithms 1.2.1Algorithms->Swift

    reductions(into:_:)

    Returns a sequence containing the accumulated results of combining the elements of the sequence using the given closure.

    Reductions.swift:68
    func reductions<Result>(into initial: Result, _ transform: @escaping (inout Result, Element) -> Void) -> ExclusiveReductionsSequence<Elements, Result>
    Mangled symbol
    ss20LazySequenceProtocolP10AlgorithmsE10reductions4into_AC019ExclusiveReductionsB0Vy8ElementsQzqd__Gqd___yqd__z_7ElementQztctlF What are these?
    FNV24 hash
    OPHM

    Parameters

    initial

    The value to use as the initial value.

    transform

    A closure that combines the previously reduced result and the next element in the receiving sequence.

    Returns

    A sequence of the initial value followed by the reduced elements.

    This can be seen as applying the reduce function to each element and providing the initial value followed by these results as a sequence.

    let runningTotal = [1, 2, 3, 4].lazy.reductions(into: 0, +)
print(Array(runningTotal))

// prints [0, 1, 3, 6, 10]