Instance MethodSwift

    split(separator:maxSplits:omittingEmptySubsequences:)

    Returns the longest possible subsequences of the sequence, in order, around elements equal to the given element.

    func split(separator: Self.Element, maxSplits: Int = Int.max, omittingEmptySubsequences: Bool = true) -> [ArraySlice<Self.Element>]

    Parameters

    separator

    The element that should be split upon.

    maxSplits

    The maximum number of times to split the sequence, or one less than the number of subsequences to return. If maxSplits + 1 subsequences are returned, the last one is a suffix of the original sequence containing the remaining elements. maxSplits must be greater than or equal to zero. The default value is Int.max.

    omittingEmptySubsequences

    If false, an empty subsequence is returned in the result for each consecutive pair of separator elements in the sequence and for each instance of separator at the start or end of the sequence. If true, only nonempty subsequences are returned. The default value is true.

    Returns

    An array of subsequences, split from this sequence’s elements.

    Overview

    The resulting array consists of at most maxSplits + 1 subsequences. Elements that are used to split the sequence are not returned as part of any subsequence.

    The following examples show the effects of the maxSplits and omittingEmptySubsequences parameters when splitting a string at each space character (” “). The first use of split returns each word that was originally separated by one or more spaces.

    let line = "BLANCHE:   I don't want realism. I want magic!"
print(line.split(separator: " ")
          .map(String.init))
// Prints "["BLANCHE:", "I", "don\'t", "want", "realism.", "I", "want", "magic!"]"

    The second example passes 1 for the maxSplits parameter, so the original string is split just once, into two new strings.

    print(line.split(separator: " ", maxSplits: 1)
          .map(String.init))
// Prints "["BLANCHE:", "  I don\'t want realism. I want magic!"]"

    The final example passes false for the omittingEmptySubsequences parameter, so the returned array contains empty strings where spaces were repeated.

    print(line.split(separator: " ", omittingEmptySubsequences: false)
          .map(String.init))
// Prints "["BLANCHE:", "", "", "I", "don\'t", "want", "realism.", "I", "want", "magic!"]"