From: Joe Mason <joe@...>
Date: 2004-03-05T23:34:43+09:00
Subject: Re: rescue inside block -> syntax error

In article <c29n0n$1qbumm$1@ID-52924.news.uni-berlin.de>, Robert Klemme wrote:
>> But wouldn't the ruby way be to write this?
> 
> No, because that would duplicate cleanup code.
> 
>>  container.each do |obj|
>>    processor.create_in_a_way_that_might_throw do |proc|
> 
> I gues you rather mean
> 
> ProcessorClass.create_in_a_way_that_might_throw do |proc|

Right.

> 
>>      proc.do_work()
>>      proc.do_more_work()
>>    ensure
>>      proc.cleanup()
> 
> The cleanup wrong here because it is done in method
> create_in_a_way_that_might_throw() in this scheme after the yield (see
> File.open() and below).

Oh, that's an ensure, not an except.  I was reading too fast (and I
still find Ruby's exception keywords hard to sort out, since they're so
different from everything else I've used.

Still, I think my example would be a good way to write a rescue clause
for actions only taken in case of failure, and which would benefit from
being able to put rescue in arbitrary blocks.

Joe