Uppercase first character for represented string.

String+Case.swift

//
//  String+Case.swift
//
//  Created by Artem Krachulov
//  Copyright (c) 2016 Artem Krachulov. All rights reserved.
//	http://www.artemkrachulov.com
//

import UIKit

extension String {
  
  /// Uppercase first character for represented string.
  ///
  /// Usage:
  ///
  ///		"hello, world".uppercaseFirst // "Hello, world"
  ///		"".uppercaseFirst // ""
  public var uppercaseFirst: String {
    guard !isEmpty else { return "" }
    
    var text = self
    text.replaceRange(text.startIndex...text.startIndex, with: String(text[text.startIndex]).capitalizedString)
    
    return text
  }
}