Get nth character of a string in Swift programming language

Question

How can I get the nth character of a string? I tried bracket([]) accessor with no luck.

var string = \"Hello, world!\"

var firstChar = string[         


        

Answer 1

My solution is in one line, supposing cadena is the string and 4 is the nth position that you want:

let character = cadena[advance(cadena.startIndex, 4)]

Simple... I suppose Swift will include more things about substrings in future versions.