I tried researching and got different results/answers. If I want to learn iOS development I know I need to download Xcode. My question is what's the minimum specs I need? I've looked online and I see that 2009 seems like the cutoff for not being able to use the latest version of Xcode. Then I see those white plastic body Macs that are running Sierra. They look older than the 2008-09 aluminum body Macs. So ultimate question is what year Mac would I need for learning and how long would it last for having the latest version of Xcode? I don't want to buy for example a 2011 MacBook Pro or Air and then next year it's obsolete and I can't use the latest version of Xcode.