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?
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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?
Firstly, I don’t think shortcircuiting can sensibly apply to XOR: whatever the value of the first operand, the second needs to be examined.
Secondly, and, &&, or and || use shortcircuiting in all cases; the only difference between the ‘word’ and ‘symbol’ versions is precedence. I believe that
andandorare present to provide the same function as perl has in lines likeI think the reason for not having a
xornamed 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!