From: Wayne Conrad <wconrad@...>
Date: 2001-10-22T13:58:35+09:00
Subject: [ruby-talk:22931] Re: Possible RCR? - break <n> for nested loops

On Sun, 21 October 2001, Phil Tomson wrote:
> x.times do
>   LABLE:y.times do
>      z.times do
>        if (somecondition) break LABLE
>      end
>   end
> end
> 
> But, I'm not sure it has advantages over catch/throw which is already 
> available.

Right.  That's almost exactly the Java syntax for labeled break, and
it's not significantly better than catch/throw for readability.  The
only way a labeled break makes things more readable is if the label
goes AFTER the loop so that it's easy for the eye to pick out where
the break will go to.  It's very odd to have to look *up* to find out
where a break that makes a loop fall out the *bottom* is going to go.
So instead:

  x.times do
    y.times do
      z.times do
        if (somecondition) break LABEL
      end
    end
    LABEL: 
  end

Wayne Conrad