From: Ryan Davis <ryand-ruby@...>
Date: 2007-12-04T18:47:28+09:00
Subject: Re: Ruby idiom equivalent to Perl "$asdf = $ARGV[0] || die 'arg required'"?


On Dec 3, 2007, at 22:41 , Giles Bowkett wrote:

> I'm making some command-line utilities easier to use and I was
> wondering if there's a really nice simple Rubyish way to do what I
> used to do with Perl back in the day. All my code in these utils which
> exit and print usage strings in the absence of required command-line
> args is looking kinda clunky to me.

How ruby REALLY stands out... this can be read out loud:

abort "arguments are required" if ARGV.empty?

ARGV.each do |arg|
   # ...
end