How to remove multiple spaces in Strings with Swift 2

Question

Until Swift 2 I used this extension to remove multiple whitespaces:

func condenseWhitespace() -> String {
        let components = self.componentsSeparatedByC         


        

Answer 1

Cleanest version. Documented, memory efficient, extremely easy to use.

extension String {

    /// Returns a condensed string, with no extra whitespaces and no new lines.
    var condensed: String {
        return replacingOccurrences(of: "[\\s\n]+", with: " ", options: .regularExpression, range: nil)
    }

    /// Returns a condensed string, with no whitespaces at all and no new lines.
    var extraCondensed: String {
        return replacingOccurrences(of: "[\\s\n]+", with: "", options: .regularExpression, range: nil)
    }

}

Usage:

let a = " Hello\n  I am  a string  ".condensed
let b = " Hello\n  I am  a string  ".extraCondensed

Output:

a: "Hello I am a string"

b: "HelloIamastring"