How to append a character to a string in Swift?

Question

This used to work in Xcode 6: Beta 5. Now I\'m getting a compilation error in Beta 6.

for aCharacter: Character in aString {
    var str: String = \"\"
    v         


        

Answer 1

var stringName: String = "samontro"
var characterNameLast: Character = "n"
stringName += String(characterNameLast) // You get your name "samontron"

Answer 2

Update for the moving target that is Swift:

Swift no longer has a + operator that can take a String and an array of characters. (There is a string method appendContentsOf() that can be used for this purpose).

The best way of doing this now is Martin R’s answer in a comment below:

var newStr:String = str + String(aCharacter)

Original answer: This changed in Beta 6. Check the release notes.I'm still downloading it, but try using:

var newStr:String = str + [aCharacter]

Answer 3

This also works

var newStr:String = str + String(aCharacter)

Answer 4

append append(c: Character) IS the right method but your code has two other problems.

The first is that to iterate over the characters of a string you must access the String.characters property.

The second is that the append method doesn't return anything so you should remove the newStr.

The code then looks like this:

for aCharacter : Character in aString.characters {
    var str:String = ""
    str.append(aCharacter)
    // ... do other stuff
}

Answer 5

I had to get initials from first and last names, and join them together. Using bits and pieces of the above answers, this worked for me:

  var initial: String = ""

            if !givenName.isEmpty {
                let char = (givenName as NSString).substring(with: NSMakeRange(0, 1))
               let str = String(char)
                initial.append(str)
            }

            if !familyName.isEmpty {
                 let char = (familyName as NSString).substring(with: NSMakeRange(0, 1))
                let str = String(char)
                initial.append(str)
            }

Answer 6

According to Swift 4 Documentation , You can append a Character value to a String variable with the String type’s append() method:

var welcome = "hello there"

let exclamationMark: Character = "!"
welcome.append(exclamationMark)
// welcome now equals "hello there!"