From: "David A. Black" <dblack@...>
Date: 2005-09-09T12:04:24+09:00
Subject: Re: Why? Blocks

Hi --

On Fri, 9 Sep 2005, Joe Van Dyk wrote:

> On 9/8/05, Jamis Buck <jamis@37signals.com> wrote:
>> On Sep 8, 2005, at 8:49 PM, Julian Leviston wrote:
>>
>>> Why can I not do this:
>>>
>>> c = [1,2,3,4,5,6,6,7,8,10]
>>> b = {|aVal| aVal / 5 == 0}
>>> d = c.select(b)
>>>
>>> I would like to store sections of code so I don't have to repeat
>>> myself...
>>
>> b = Proc.new {|aVal| aVal / 5 == 0}
>> d = c.select(&b)
>
> What's the significance of '&b' vs 'b'?

&b means that it's serving as the code block for this method call.  b
means the Proc object is just a regular argument to the method.


David

-- 
David A. Black
dblack@wobblini.net