From: James Edward Gray II <james@...>
Date: 2005-12-20T00:35:00+09:00
Subject: Re: Spawning

On Dec 19, 2005, at 9:25 AM, Logan Capaldo wrote:

>
> On Dec 19, 2005, at 10:15 AM, James Edward Gray II wrote:
>
>> On Dec 19, 2005, at 9:02 AM, Logan Capaldo wrote:
>>
>>> Apparently splat will splat almost anything as long as its to_a  
>>> method returns an array (a reasonable assumption). I don't know  
>>> if I really like this. I always kind of thought of splat as  
>>> syntax (like &), not really as a method (operator).
>>
>> & works on anything with a to_proc().  See:
>>
>> http://blogs.pragprog.com/cgi-bin/pragdave.cgi/Tech/Ruby/ToProc.rdoc
>>
>> James Edward Gray II
>>
>>
>
> Ok. I was unaware of that. But to_proc is more like to_ary than  
> to_a, IMO. (Not that I've ever seen a to_p ;) ). I could maybe go  
> for splat working on anything that responded to to_ary, but  
> currently it just personally feels kinda icky.

Wish granted.  ;)

 >> class ToAry
 >>   undef to_a
 >>   def to_ary
 >>     [1, 2, 3]
 >>   end
 >> end
=> nil
 >> arr = ToAry.new
=> #<ToAry:0x31fa18>
 >> arr.respond_to? :to_a
=> false
 >> def show( one, two, three )
 >>   p one
 >>   p two
 >>   p three
 >> end
=> nil
 >> show(*arr)
1
2
3
=> nil

to_ary() is favored.  Otherwise, to_a() is used.

James Edward Gray II