From: John Joyce <dangerwillrobinsondanger@...>
Date: 2007-04-12T03:26:14+09:00
Subject: Re: Proc&Bloc

Try your code again in irb.
then, in irb
times3.class

Should give you the answer.

Proc

When you def gen_times, actually, you are telling how to create an  
instance of Proc with a code block. gen_times's code block happens to  
take the factor and multiply it by n
this is like a function object.

If you've only been at it one week, don't worry. It will become clear!
On Apr 12, 2007, at 2:43 AM, Yaya __ wrote:

> Hi
> I start learning ruby since a week but i have some probleme to  
> undestand
> Proc
> and the philosophy which hides behind .
> Why don't using methode ?
> In this code vhere is the Proc?
>
>         def gen_times(factor)
>           return Proc.new {|n| n*factor }
>         end
>
>         times3 = gen_times(3)
>         times5 = gen_times(5)
>
>         times3.call(12)               #=> 36
>         times5.call(5)                #=> 25
>         times3.call(times5.call(4))   #=> 60
>
> Really it do not arrive to undertand
>
> -- 
> Posted via http://www.ruby-forum.com/.
>