"增加键值对"
/**
* @param anObject 对象
* @param aKey 键值对
*/
- (void)setObject:(ObjectType)anObject forKey:(KeyType)aKey;
/**
* @param value 对象
* @param key 键值对
*/
- (void)setValue:(ObjectType)value forKey:(NSString *)key;
"删除键值对"
/**
* @param aKey 指定键值对
*/
- (void)removeObjectForKey:(KeyType)aKey;
"修改键值对"
/**
* @param anObject 对象
* @param aKey 键值对
*/
- (void)setObject:(ObjectType)anObject forKey:(KeyType)aKey;
"查找指定字段的键值"
/**
* @param anObject 指定键值
*
* @return BOOL
*/
- (BOOL)containsObject:(ObjectType)anObject;
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