国产av日韩一区二区三区精品,成人性爱视频在线观看,国产,欧美,日韩,一区,www.成色av久久成人,2222eeee成人天堂

Don’t call it OC, it’s too unprofessional. People abbreviate it as Objc
Generics should be fine
iOS8 No problem 7 I haven’t tried it yet
Understand Objective-C in principle as a dynamic language
Array can put whatever you want, so generics only need to be processed during compilation The
runtime is still the old code~

This is what the article I read said:

Lightweight Generics are lightweight because this is a pure compiler syntax support (llvm 7.0). Like Nullability, it does not rely on any objc runtime upgrade. In other words, this new syntax is available on Xcode 7 It can be used and is fully backward compatible (lower iOS versions)
Attached is the article I read