From: mental@...
Date: 2006-02-25T03:21:33+09:00
Subject: Re: lazy.rb 0.9.5 -- transparent futures!

Quoting Daniel Nugent <nugend@gmail.com>:

> Mental, could I perchance persuade you to add an optional
> parameter to
> the Future initializer that accepts a block to be run inside the
> rescue clause of the Future's thread?
>
> future(lambda{|exception| lock.synchronize{subscribers.each{|s|
> s.raise(exception)}}}){holy_crap_long_execution}

How about:

 future {
   begin
     holy_crap_long_execution
   rescue Exception => exception
     lock.synchronize do
       subscribers.each { |s| s.raise( exception ) }
     end
     raise
   end
 }

?

That might be a bit longer, but it seems clearer what's going on.

-mental