NSObject+SafeExpectations

从 NSDictionary 中获取意外值不再会导致崩溃。

使用方法

为 NSDictionary 提供了几种新的方法：请参阅 文档

• (NSString *)stringForKey:(id)key;
• (NSNumber *)numberForKey:(id)key;
• (NSArray *)arrayForKey:(id)key;
• (NSDictionary *)dictionaryForKey:(id)key;
• (id)objectForKeyPath:(NSString *)keyPath;
• (NSString *)stringForKeyPath:(id)keyPath;
• (NSNumber *)numberForKeyPath:(id)keyPath;
• (NSArray *)arrayForKeyPath:(id)keyPath;
• (NSDictionary *)dictionaryForKeyPath:(id)keyPath;

愿望列表

• NSArray: stringAtIndex:、numberAtIndex:、arrayAtIndex:、dictionaryAtIndex:
• 为 objectForKeyPath: 提供集合支持