1 //
2 // main.m
3 // NSMutableDictionary
4 //
5 // Created by dingxiaowei on 13-5-16.
6 // Copyright (c) 2013年 dingxiaowei. All rights reserved.
7 //
8
9 #import <Foundation/Foundation.h>
10 #import "Student.h" //特别注意：如果从外部导入的类文件，则需要在问价里面看有没有对它进行添加到项目中 在这儿的操作是：首先点击蓝色的项目文件-》然后点击第二个Build Phases-》接着查看compile Items 看看里面是否包含外部导入进来的那个类的.m文件
11
12 #pragma mark - 字典的创建
13 void dicCreat(){
14 Student *stu1=[Student studentWithName:@"dingxiaowei"];
15 Student *stu2=[Student studentWithName:@"hanpengyu"];
16 Student *stu3=[Student studentWithName:@"jiangke"];
17 NSMutableDictionary *dic=[NSMutableDictionary dictionaryWithObjectsAndKeys:stu1,@"k1",stu2,@"k2",stu3,@"k3",nil];
18 //直接添加键值对
19 [dic setObject:@"value" forKey:@"key"];
20 //根据一个key删除一个键值对
21 [dic removeObjectForKey:@"key"];
22 //根据key查找value（如果找不到，则返回null）
23 NSLog(@"%@",[dic objectForKey:@"key"]);
24 //删除多个key对应的value
25 [dic removeObjectsForKeys:[NSArray arrayWithObjects:@"k1",@"k2",nil]];
26 //将另外一个dictionary添加到当前dictionary中
27 NSDictionary *dicOther=[NSDictionary dictionaryWithObjectsAndKeys:@"valueOne",@"keyOne",@"valueTwo",@"keyTwo",nil];
28 [dic addEntriesFromDictionary:dicOther];
29 NSLog(@"%@",dic);
30 }
31
32 int main(int argc, const char * argv[])
33 {
34
35 @autoreleasepool {
36 dicCreat();
37
38 }
39 return 0;
40 }
