简写为所有的bool YES或所有的bool NO？ [英] Shorthand for all bools YES or all bools NO?

问题描述

经常在我的code，我需要检查的bool的X量的状态是否都是真实的或全部的bool都是假的。所以，我做的：

Often in my code I need to check whether the state of x amount of bools are all true OR all bools are false. So I do:

BOOL first, second, third;
if((first && second && third) || (!first && !second && !third))
     //do something

作为一个懒惰的程序员，我想知道是否有这种类型的查询一些数学简写，而不必每次都输入了这件事？

Being a lazy programmer, I want to know if there is some mathematical shorthand for this kind of query, instead of having to type out this whole thing every time?

推荐答案

对于所有的bool同样是（配对）相等性测试的简写：

The shorthand for all bools the same is testing for (pairwise) equality:

(first==second && second==third)

当然，你可以扩展为任意数量的布尔值，其 N-1 平等会检查的加盟和的运营商。

Of course you can expand this to any number of booleans, having N-1 equality checks joined with the and operator.

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