Learning a new language doesn't take a long time. If you can program, then picking up a new language is a matter of days especially if it's the same paradigm.

Learning a new language doesn't take a long time. If you can program, then picking up a new language is a matter of days especially if it's the same paradigm. If it's something radically different, I can't see why it should take more than a month. The only learning curve to swift would be it's standard library. But in this age of IDEs with auto competition and copious documentation that's not much of a program.