Swift equivalent of Array.componentsJoinedByString?

swift, xcode6

Solution

Swift 3.0:

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.

Swift 2.0:

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.

Swift 1.0:

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"

Problem

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?

Original source