From: Robert Klemme <bob.news@...>
Date: 2004-06-05T00:23:39+09:00
Subject: Re: [RCR] Floating point division operator /. (or fdiv method)


"Paul Brannan" <pbrannan@atdesk.com> schrieb im Newsbeitrag
news:20040604135901.GD2788@atdesk.com...
> On Fri, Jun 04, 2004 at 09:48:00AM +0900, Jim Weirich wrote:
> > Robert Klemme wrote:
> > >I strongly oppose that one: Operators are overloaded and if I have
two
> > >int's I want integer division, if I have to floats I want float
division.
> > >And I don't want that changed, because often code is written with
integer
> > >divisions in mind.  All sorts of indexing calculations depend on int
math.
> >
> > Then your code will break whenever it is used in a program that
requires
> > "mathn".  You should always use div if you want integer division.
>
> > The truth is that Ruby's / operator is broken.
>
> I strongly disagree.  It is mathn that is broken, not the / operator.
>
> I use / all the time to indicate integer division (provided I'm working
> with integers).  My code will not work with mathn and I have no
> intention of going out of my way to uglify my code just to make it
> compatible with a broken library.
>
> I've said it before and I will say it again.  Code that changes builtin
> classes without a really good reason (YAML is one such example) is
> broken.  See [ruby-talk:81923] for what I've written in the past on this
> subject.

That's especially true if an existing method's or standard operator's
behavior is changed.

> If we get selector namespaces in ruby 2.0, then mathn can be rewritten
> such that users can get floating-point division with / in their
> namespace only.  Until then I recommend not using mathn.

Thanks for expressing my feelings about this so well!

Regards

    robert