In Objective-C we can call componentsJoinedByString
to produce a string with each element of the array separated by the supplied string. While Swift has a componentsSeparatedByString
method on String, there doesn't appear to be the inverse of this on Array:
'Array<String>' does not have a member named 'componentsJoinedByString'
What is the inverse of componentsSeparatedByString
in Swift?
Similar to Swift 2.0, but API renaming has renamed joinWithSeparator
to joined(separator:)
.
let joinedString = ["1", "2", "3", "4", "5"].joined(separator: ", ") // joinedString: String = "1, 2, 3, 4, 5"
See Sequence.join(separator:) for more information.
You can use the joinWithSeparator
method on SequenceType
to join an array of strings with a string separator.
let joinedString = ["1", "2", "3", "4", "5"].joinWithSeparator(", ") // joinedString: String = "1, 2, 3, 4, 5"
See SequenceType.joinWithSeparator(_:) for more information.
You can use the join
standard library function on String
to join an array of strings with a string.
let joinedString = ", ".join(["1", "2", "3", "4", "5"]) // joinedString: String = "1, 2, 3, 4, 5"
Or if you'd rather, you can use the global standard library function:
let joinedString = join(", ", ["1", "2", "3", "4", "5"]) // joinedString: String = "1, 2, 3, 4, 5"
The componentsJoinedByString is still available on NSArray, but not on Swift Arrays. You can bridge back and forth though.
var nsarr = ["a", "b", "c"] as NSArray var str = nsarr.componentsJoinedByString(",")
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