Shouldn't really matter which language, right? How long does swift take to learn really? 2 weeks to produce good stuff 4 to be near flawless? From scratch, 3

Shouldn't really matter which language, right? How long does swift take to learn really? 2 weeks to produce good stuff 4 to be near flawless? From scratch, 3d Graphics mathematics, pixel shaders, graphics card hacks and other algorithms might take a year or two or more.