From: "David A. Black" <dblack@...>
Date: 2005-11-05T14:10:52+09:00
Subject: Re: Optional block arguments?

Hi --

On Sat, 5 Nov 2005, Ryan Leavengood wrote:

> On 11/4/05, Vincent Foley <vfoley@gmail.com> wrote:
>> How can I have a block that optionally takes an argument?  Thanks.
>
> irb(main):001:0> p = proc do |*a|
> irb(main):002:1*   if a[0]

I think you'd have to use a.size since with "if a[0]" you'll get false
positives if the first arg is nil or false.


David

-- 
David A. Black
dblack@wobblini.net