How to remove all the spaces and \n\r in a String?

Question

What is the most efficient way to remove all the spaces, \\n and \\r in a String in Swift?

I have tried:

for character in s         


        

Answer 1

Use this:

let aString: String = "This is my string"
let newString = aString.stringByReplacingOccurrencesOfString(" ", withString: "", options:[], range: nil)
print(newString)

Output : Thisismystring

Answer 2

Swift 4:

let text = "This \n is a st\tri\rng"
let test = String(text.filter { !" \n\t\r".contains($0) })

Output:

print(test) // Thisisastring

While Fahri's answer is nice, I prefer it to be pure Swift ;)

Answer 3

Swift 4:

let string = "Test\n with an st\tri\rng"
print(string.components(separatedBy: .whitespacesAndNewlines))
// Result: "Test with an string"

Answer 4

If by spaces you mean whitespaces, be aware that more than one whitespace character exists, although they all look the same.

The following solution takes that into account:

Swift 5:

 extension String {

    func removingAllWhitespaces() -> String {
        return removingCharacters(from: .whitespaces)
    }

    func removingCharacters(from set: CharacterSet) -> String {
        var newString = self
        newString.removeAll { char -> Bool in
            guard let scalar = char.unicodeScalars.first else { return false }
            return set.contains(scalar)
        }
        return newString
    }
}


let noNewlines = "Hello\nWorld".removingCharacters(from: .newlines)
print(noNewlines)

let noWhitespaces = "Hello World".removingCharacters(from: .whitespaces)
print(noWhitespaces)