From: Joel VanderWerf <vjoel@...>
Date: 2008-02-11T05:22:23+09:00
Subject: Re: Timeout::Error

Daniel DeLorme wrote:
> What about the reverse problem? A lazy programmer might do a catch-all 
> rescue which would then catch unexpected inner exceptions which were not 
> meant to be rescued. i.e.
> 
> begin
>   Timeout.timeout(1) do
>     1 / 0 #oops!
>   end
> rescue
>   #silently ignore timeout
>   #...but ignores division by zero too!
> end

That problem is already with us:

data = [] # Oops!
file = "/etc/passwd"
begin
   File.open(file) do |f|
     data.concat f.gets
   end
rescue
   puts "failed to read #{file.inspect}"
end

-- 
       vjoel : Joel VanderWerf : path berkeley edu : 510 665 3407