如何“打破"在一个案例中......在Ruby中 [英] How to "break" out of a case...while in Ruby

问题描述

所以，我尝试了 break、next 和 return.他们都给出错误，exit当然有效，但完全退出.那么，如何结束一个case...when太快了?"

So, I've tried break, next and return. They all give errors, exit of course works, but that completely exits. So, how would one end a case...when "too soon?"

示例:

case x
    when y; begin
        <code here>
        < ** terminate somehow ** > if something
        <more code>
    end
end

(以上是某种形式的伪代码，只是为了大致说明我的要求 [begin...end 用于希望 break 能够工作].

(The above is some form of pseudo-code just to give the general idea of what I'm asking [begin...end was used with the hope that break would work].

而且，当我在做的时候，有没有更优雅的方式将块传递给case...when?

And, while I'm at it, is there a more elegant way of passing blocks to case...when?

推荐答案

有什么问题:

case x
when y;
    <code here>
    if !something
        <more code>
    end
end

注意 if !something 和 unless something

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