Objective-C中字典的使用

//创建不变字典

NSDictionary *glossary=[NSDictionary
dictionaryWithObjectsAndKeys:[NSNumber
numberWithInt:97],@"nicky",[NSNumber
numberWithInt:95],@"johnson",[NSNumber
numberWithInt:90],@"black",[NSNumber
numberWithInt:100],@"lily",nil];

NSLog(@"%@",glossary);

}

//创建可变字典

NSMutableDictionary *mGlossary=[NSMutableDictionary
dictionary];

[mGlossary setObject:[NSNumber
numberWithInt:97]
forKey:@"nicky"];

[mGlossary setObject:[NSNumber
numberWithInt:95]
forKey:@"johnson"];

[mGlossary setObject:[NSNumber
numberWithInt:90]
forKey:@"black"];

[mGlossary setObject:[NSNumber
numberWithInt:100]
forKey:@"lily"];

NSLog(@"%@",mGlossary);

//删除对象

// [mGlossary removeObjectForKey:@"johnson"];

// NSLog(@"%@",mGlossary);

//利用枚举，遍历对象

NSEnumerator *enumerator;
enumerator=[mGlossary
objectEnumerator];

id obj;

while(obj=[enumerator
nextObject])
{

NSLog(@"I found %@",obj);
}

//遍历关键字

NSEnumerator *enumerator1;
enumerator1=[mGlossary
keyEnumerator];

id obj1;

while(obj1=[enumerator1
nextObject])
{

NSLog(@"I found %@",obj1);
}