标签: objective-c variables naming-conventions
谁能解释为什么在Objective-C中有时会使用这个奇怪的变量名称,比如
NSArray * _sushiTypes; NSString * _lastSushiSelected;
或有时
NSArray * sushiTypes = _sushiTypes; NSString * lastSushiSelected = _lastSushiSelected;
这有必要吗?