Does swift have a trim method on String?

Here's how you remove all the whitespace from the beginning and end of a String.

(Example tested with Swift 2.0.)

let myString = "  \t\t  Let's trim all the whitespace  \n \t  \n  "let trimmedString = myString.stringByTrimmingCharactersInSet(    NSCharacterSet.whitespaceAndNewlineCharacterSet())// Returns "Let's trim all the whitespace"

(Example tested with Swift 3+.)

let myString = "  \t\t  Let's trim all the whitespace  \n \t  \n  "let trimmedString = myString.trimmingCharacters(in: .whitespacesAndNewlines)// Returns "Let's trim all the whitespace"

Put this code on a file on your project, something likes Utils.swift:

extension String{       func trim() -> String    {        return self.stringByTrimmingCharactersInSet(NSCharacterSet.whitespaceCharacterSet())    }}

So you will be able to do this:

let result = " abc ".trim()// result == "abc"

Swift 3.0 Solution

extension String{       func trim() -> String   {    return self.trimmingCharacters(in: NSCharacterSet.whitespaces)   }}

So you will be able to do this:

let result = " Hello World ".trim()// result = "HelloWorld"

In Swift 3.0

extension String{       func trim() -> String   {    return self.trimmingCharacters(in: CharacterSet.whitespaces)   }}

And you can call

let result = " Hello World ".trim()  /* result = "Hello World" */