From: Rajinder Yadav <devguy.ca@...>
Date: 2009-10-31T03:41:03+09:00
Subject: Re: Ruby doesn't implement x++ for Fixnum's because ???

On Fri, Oct 30, 2009 at 1:51 PM, lith <minilith@gmail.com> wrote:
>> IMHO the story goes like this: absence of postfix ++ and -- is a
>> consequence of the fact that numeric types are immutable in Ruby which
>> makes an assignment necessary for these operators.
>
> You could "decorate" it with such a method though. This could look
> something like this:
>
>    class FixNum < BasicObject
>
>        def initialize(fn)
>            @fn = fn
>        end
>
>        def succ!
>            @fn += 1
>        end
>
>        def method_missing(*args, &block)
>            @fn.send(*args, &block)
>        end

Hi lith,

can you extol your knowledge on me about what method_missing is doing?
I get what *args and &block is, but not quite sure what's going on?

>    end
>
>    a = FixNum.new(1)
>    a.succ!
>    p a
>    => 2
>
> Whether this is good practice or marginally useful ...
>
>



-- 
Kind Regards,
Rajinder Yadav

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