I agree with a lot of this. If you're on iOS you're going to have to know both Obj-C and Swift if you wish to prosper. Older apps aren't going to be rewritten j

I agree with a lot of this. If you're on iOS you're going to have to know both Obj-C and Swift if you wish to prosper. Older apps aren't going to be rewritten just for a new language and you'll probably have to work on those. New ones will use swift and you'll need to know that too. Not saying you can't get an app published using just swift. You can. But if you want to be an iOS "expert" learn both, IMHO. The knowledge will pay dividends.