From: Carlos <angus@...>
Date: 2004-11-11T22:36:26+09:00
Subject: Re: array.each restart when array is changed

[Bill Atkins <batkins57@gmail.com>, 2004-11-11 13.49 CET]
> > array.each do |e|
> >         if (today_is_christmas)
> >                 array += ["Hello"]
> >                 retry
> >         end
> > end
> How does this work?  Does 'retry' recall the method associated with its block?

Yes, and re-evaluates its arguments (if any).

Inside a method, it seems to recall the method (re-evaluating arguments)
only if the method has a block, altough you are not inside it. Didn't test
that much.

	def repeat (what, test_until)
		retry if !test_until
	end

	s = ""
	repeat(s << "x", s.length > 5)
	puts s

retry.rb:2:in `repeat': retry outside of rescue clause (LocalJumpError)
        from retry.rb:6

But:

	def repeat (what, test_until)
		retry if !test_until
	end

	s = ""
	repeat(s << "x", s.length > 5) {} # <-- note block
	puts s

#-> xxxxxx

Greetings.