From: rpardee@... (Roy Pardee)
Date: 2004-09-26T13:19:26+09:00
Subject: Re: Nuby: How do I find out what exception was thrown?

Thanks all for the responses.  I think the exception is not
Errno::EACCES tho.  If I throw this at the end of my script:

rescue Errno::EACCESS => exp
   puts "In rescue section"
end

Ruby comes back with:

F:\>ruby KillOwnerLok.rb
KillOwnerLok.rb:18: syntax error
rescue Errno::EACCESS => exp
      ^

I must be doing something very wrong, b/c if I change that to:

rescue StandardError
   puts "In rescue section"
end

Ruby says:

F:\>ruby KillOwnerLok.rb
KillOwnerLok.rb:18: syntax error
rescue StandardError
      ^

Any further advice?

Thanks!

-Roy

Tim Hunter <cyclists@nc.rr.com> wrote in message news:<Wjj5d.7990$zA3.1670742@twister.southeast.rr.com>...
> Roy Pardee wrote:
> 
> > If I try to run this while the file in question is opened by another
> > process I get this output:
> > 
> > ------------------------------------------
> > F:\>ruby KillOwnerLok.rb
> > \\blackula\Profiles\Laurel\Application Data\Qualcomm\Eudora\owner.lok
> > found!
> > KillOwnerLok.rb:9:in `delete': Permission denied -
> > \\blackula\Profiles\Laurel\Ap
> > plication Data\Qualcomm\Eudora\owner.lok (Errno::EACCES)
> >         from KillOwnerLok.rb:9
> > ------------------------------------------
> > 
> > I'd like to print my "Could not delete..." message in a rescue
> > section, but I don't know how to translate the error message from the
> > output into something 'rescuable'.  How do I do that?
> 
> Ruby's telling you: Errno::EACCES
> 
> rescue Errno::EACCES => exp
>    puts "Caught an exception: #{exp.message}"
> end
> 
> But you probably want to catch other Errno's, too. You can catch them all by
> rescuing StandardError. If you need to know exactly which exception was
> thrown you can call `exp.class' in your rescue clause.