如何使用operator&或>在Objective-C？ [英] How to compare objects using operator < or > in Objective-C?

问题描述

如何比较Objective-C中自定义类的两个对象？我尝试重载

- （NSComparisonResult）compare：（id）other;

方法。这个工作很好，如果我手动调用方法

  if（[obj1 compare：obj2] == NSOrderedDescending）{
 // do something 
} 
  

有什么办法可以这样做吗？

  if（obj1> obj2）{
 // do something 
} 
  
 
 
 
还是有其他方法需要重载？
解决方案
这是不可能的，因为目标C没有操作符重载。您正在比较指针值。
 
How do I compare two objects of a custom class in Objective-C? I try to overloading the 

- (NSComparisonResult)compare:(id)other; 

method. This works great if I call the method manually
if ([obj1 compare:obj2] == NSOrderedDescending) {  
    // do something  
}  
Is there any way that I can do it like this?
if (obj1 > obj2) {
    // do something
}
Or is there another method that I need to overload?
解决方案
This is not possible, since objective C doesn't have operator overloading. You are comparing pointer values.

                        
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