This is a great article.

What happens to the person who spent night and day studying Objective-C only to be horrified by the Swift announcement at WWDC 2014? Do they keep coding in what is quickly becoming the language of lesser choice, or do they start again? If you’re a young twenty-something, this may pose little difficulty, but if you’re taking care of a family — with bills to pay and mouths to feed — the task becomes Herculean.