From: Yoann Guillot <john-rubytalk@...>
Date: 2009-04-20T03:17:54+09:00
Subject: Re: ruby1.9 and the retry keyword

On Mon, Apr 20, 2009 at 02:10:33AM +0900, James Gray wrote:
> On Apr 19, 2009, at 12:01 PM, Christopher Dicely wrote:
>
>> That mimics the example (where the retry is unconditional), but
>> clearly isn't a general solution;
>
> I'll be surprised if more complex examples can't be similarly converted 
> fairly easily.  That was kind of my point.  I meant the code to say, take 
> a step back and think what is this trying to do?
>

My code walks an array, and may change the current element, which is allowed
without breaking the iteration.

I have also a special case where i have to change a whole subsection of the
array, this was the case where i used 'retry'

eg
ary.each { |e|
	case e
	when foo
		ary[ary.index(e)] = foo(e)
	when bar
	when ...
	when baz
		ary[ary.index(e), 12] = [flublu]
		retry
	end
}

Sure, i could use map or many other ways, my code is quite ugly anyway.
I was just surprised by the change of behavior.

I don't see the point in removing capabilities from the language (restarting
an iteration from within), but I can sure live with it.

-- 
Yoann