From: Chad Perrin <code@...>
Date: 2012-04-16T02:48:05+09:00
Subject: Re: Why doesn't Fixnum#to_d exist?

On Sun, Apr 15, 2012 at 05:35:12AM +0900, Josh Cheek wrote:
> On Sat, Apr 14, 2012 at 11:45 AM, Chad Perrin <code@apotheon.net> wrote:
> > On Sat, Apr 14, 2012 at 07:23:34AM +0900, Mark Campbell wrote:
> > >
> > > Yes, that file has the String#to_d, Float#to_d and Rational#to_d.
> > > Fixnum#to_d is not present.
> >
> > Strange.  It appears you're right.  I can do 1.to_d, but I don't know
> > what class has the method when I use it like that.
>
> You can ask the method for its owner to find out
> 1.method(:to_d).owner # => Integer

Thanks.  That's the method I was trying to remember, but it wouldn't come
to me.

It's pretty strange how this works, though:

    >> Integer.methods.include? :to_d
    => false
    >> 1.method(:to_d).owner
    => Integer

. . . so, because I was using the Integer.methods.include? approach
earlier, I didn't find it in Integer either.  Shouldn't the class report
the method when asked even if it's added by a mixin or straight-up
monkeypatch?

-- 
Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]