The normal vitriol that emerges from a vendor forcing a new technology on their developers hasn't been as present with Apple's Swift. According to Red Monk the growth of the language is unprecedented, and it's not only due to the enormous app store platform. Developer's seem to genuninly enjoy the language.
“You know how many people are home are going, ‘What in the heck are these guys talking about?” Federighi joked when he unveiled Swift at last year's Worldwide Development Conference. People who didn’t care about, say, the speed of RC4 encryption quickly forgot all about those few minutes of confusion. Programmers didn't.