From: Justin Collins <justincollins@...>
Date: 2007-12-04T16:25:57+09:00
Subject: Re: Ruby idiom equivalent to Perl "$asdf = $ARGV[0] || die 'arg required'"?

Justin Collins wrote:
> 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.
>>
>>   
>
> Are you saying you _do_ want something like the example you gave?
>
> var = ARGV[0] || raise("Argument required")
>
>
> -Justin

I guess you can get rid of the parentheses, too.

var = ARGV[0] or raise "Argument required"