iOS －Category(OC) and Extension(swift) differences

English:

Category: in Objective-c Category can be used to add extra method to the class, but without property.

Extension: in swift we can use extension to add method, property and protocol to class. when extension used in protocol we need to implement the method we add to protocol.

 

转载于:https://www.cnblogs.com/geekbang/p/4959056.html