关键字为独占或红宝石？ [英] Keyword for exclusive or in ruby?

问题描述

红宝石是否有纯英文关键字为独占或像他们有与和或？如果不是，这是因为独家或者不允许评价短切？

Does Ruby have a plain-English keyword for exclusive or, like they have "and" and "or"? If not, is this because exclusive or doesn't allow evaluation short-cutting?

推荐答案

首先，我不认为短路能够明智地应用到XOR：无论第一个操作数的值，要检查的第二个需求

Firstly, I don't think shortcircuiting can sensibly apply to XOR: whatever the value of the first operand, the second needs to be examined.

其次，和，和放大器;＆放大器，或和||使用在所有情况下短路; 道和符号版本之间的唯一区别是precedence。我相信，和和或是present提供相同的功能，Perl有在线条状

Secondly, and, &&, or and || use shortcircuiting in all cases; the only difference between the "word" and "symbol" versions is precedence. I believe that and and or are present to provide the same function as perl has in lines like

process_without_error or die

我觉得没有一个 XOR 命名函数的原因可能是有在这种情况下，低precedence运营商是没有意义的，它已经是一个混乱的局势不够！

I think the reason for not having a xor named function is probably that there's no point in a low-precedence operator in this case and that it's already a confusing enough situation!

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