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swiftconcatenation

Error concatenating characters in swift

I tried to concatenate two characters in Swift but it shows me the error

Binary operator can't be applied on two character operands.

let a: Character = "A"
let l: Character = "l"

let al = a + l

Operator overloading is supported by Swift's Strings so why not Character?

Solution

  • If you really want/need to be able to "concatenate" 2 Character(s) using the + operator you can define this function.

    func + (left:Character, right:Character) -> String {
    return "\(left)\(right)"
}

    As Skrundz said in its comment, an instance of Character can contain only 1 character so the output of the function is going to be a String.

    Now:

    let a : Character = "A"
let b : Character = "B"
let ab = a + b // -> the String "AB"