是否有更好的写法v =（v == 0？1：0）; [英] Is there a better way of writing v = (v == 0 ? 1 : 0);

问题描述

我想在0和1之间切换一个变量。如果它为0，我想将其设置为1，否则如果是1，我要将其设置为0.

这是一个基本的操作，我经常写我想调查最短，最清晰的可能的方法。这是我到目前为止最好的：

  v =（v == 0？1：0）;你能改进吗？
 
 
 
  
编辑：问题是要求如何用最少的字符写上述语句，同时保持清晰度 - 这不是一个真正的问题？这不是一个代码高尔夫练习，虽然一些有趣的答案已经出来的人接近它作为高尔夫 - 很高兴看到高尔夫以一种建设性和发人深省的方式使用。
解决方案
您可以直接使用：
  v = 1 -  v; 
  
这当然假定变量被正确初始化，即它只有值0或1 
 
 
 
另一种方法较短，但使用较不常用的运算符：
  v ^ = 1; 
  
 
 
 
编辑：
 
 
 
我从来没有把这个问题作为代码高尔夫，只是为了找到一个简单的方法来完成这个任务，而不使用任何模糊的技巧，如操作符的副作用。
 
I want to toggle a variable between 0 and 1. If it's 0 I want to set it to 1, else if it's 1 I want to set it to 0.

This is such a fundamental operation that I write so often I'd like to investigate the shortest, clearest possible way of doing it. Here's my best so far:
v = (v == 0 ? 1 : 0);
Can you improve on this?

Edit: the question is asking how to write the above statement in the fewest characters while retaining clarity - how is this 'not a real question'? This wasn't intended to be a code-golf exercise, though some interesting answers have come out of people approaching it as golf - it's nice to see golf being used in a constructive and thought-provoking manner.
解决方案
You can simply use:
v = 1 - v;
This of course assumes that the variable is initialised properly, i.e. that it only has the value 0 or 1.

Another method that is shorter but uses a less common operator:
v ^= 1;


Edit:

To be clear; I never approached this question as code golf, just to find a short way of doing the task without using any obscuring tricks like side effects of operators.

                        
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