title: Get string character by index
body: <p>I know how to work out the index of a certain character or number in a string, but is there any predefined method I can use to give me the character at the <em>nth</em> position? So in the string "foo", if I asked for the character with index 0 it would return "f".</p>
  
  <p>Note - in the above question, by "character" I don't mean the char data type, but a letter or number in a string. The important thing here is that I don't receive a char when the method is invoked, but a string (of length 1). And I know about the substring() method, but I was wondering if there was a neater way.</p>