title: If Swift will replace Objective-C in the future
body: <p>I'm a beginner at iOS, and just finish studying Objective-C last year. 
  However, there is lots of people beginning to study Swift. After reading some related articles, I don't think Swift is more effective than Objective-C. If Swift will replace Objective-C in the future? Is it necessary to study Swift right now? I need your tips.</p>