[Objective-c 基础 - 2.8] category分类/类别/类目

 1 @interface Person (Simon)
 2 - (void) study;
 3 @end
 4  
 5 Person+Simon.m
 6 @implementation Person (Simon)
 7 - (void) study
 8 {
 9     NSLog(@"学习----");
10 }
11 @end

 1 #import <Foundation/Foundation.h>
 2 #import "Person.h"
 3 #import "Person+Simon.h"
 4 
 5 int main(int argc, const char * argv[]) {
 6     @autoreleasepool {
 7         Person *p = [[Person alloc] init];
 8         [p study];
 9     }
10     return 0;
11 }
12