From: Eero Saynatkari <eero.saynatkari@...>
Date: 2006-09-01T12:15:16+09:00
Subject: Re: Rescuing a 'require'

Garance A Drosehn wrote:
> I wanted to use Socket.gethostname to get the current hostname
> without executing a unix command.  So:
> 
> require 'socket'
> $this_host = Socket.gethostname
> 
> I have to run this code on several platforms, and it turned out that
> some of them do not have 'socket'.  So, my first idea was change
> it to:
> 
> begin
>    require 'socket'
>    $this_host = Socket.gethostname
> rescue

  rescue LoadError

>
>     $this_host = `hostname`.chomp
> end
> 
> but the require still caused the script to terminate on the platforms
> which didn't have 'socket'.  I already have an alternate solution for
> this specific case, but I'm wondering if there was something that I
> missed.  Is there any way to catch errors from a require command?

You need to give the exception class; rescue by itself
only catches subclasses of StandardError.

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