From: James Edward Gray II <james@...>
Date: 2005-12-02T22:43:09+09:00
Subject: Re: require!

On Dec 2, 2005, at 12:13 AM, Hal Fulton wrote:

> James Edward Gray II wrote:
>> On Nov 30, 2005, at 7:52 PM, Ross Bamford wrote:
>>> On another note, though, I also found out that calling amethod  
>>> (*args) works with anything with 'each' (any Enumerable?), which   
>>> made me smile. It was the post about ranges that made me get that :)
>> Actually * looks for a to_a.
>
> I always thought it looked for to_ary... now someone says it looks
> first for to_ary, then to_a.
>
> And I had no idea that it would work with just #each defined.

It doesn't:

 >> class NoArr
 >>   def each
 >>     yield 1
 >>     yield 2
 >>     yield 3
 >>   end
 >>   undef to_a
 >> end
=> nil
 >> def multi( one, two, three )
 >>   p one
 >>   p two
 >>   p three
 >> end
=> nil
 >> multi( *NoArr.new )
NoMethodError: undefined method `to_a' for #<NoArr:0x30d980>
         from (irb):14

James Edward Gray II