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>]
The element that should be split upon.
The maximum number of times to split the sequence, or one less than the number of subsequences to return. If
maxSplits + 1subsequences are returned, the last one is a suffix of the original sequence containing the remaining elements.
maxSplitsmust be greater than or equal to zero. The default value is
false, an empty subsequence is returned in the result for each consecutive pair of
separatorelements in the sequence and for each instance of
separatorat the start or end of the sequence. If
true, only nonempty subsequences are returned. The default value is
An array of subsequences, split from this sequence’s elements.
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
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!"]"