就像图片一样,我不明白访问者的手段,有谁知道吗?
这是下面的代码
// KVC - overridden to access generic dictionary storage unless subclasses explicitly provide accessors
- (id)valueForKey:(NSString *)key;
// KVC - overridden to access generic dictionary storage unless subclasses explicitly provide accessors
- (void)setValue:(id)value forKey:(NSString *)key;