From: serialhex <serialhex@...>
Date: 2010-12-24T08:36:48+09:00
Subject: Re: Best way to get 3/2 == 1.5 ?

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# some code for u

# do this so your rational will stay rational
require 'mathn'

# now
a = 3/2  # if in irb you should get (3/2) as a reply

a.to_f  # should give you 1.5

# and thats it!!

mathn is a library that unify's all the numbers and makes them play well
together, why it's not loaded by default IDFK... but whatever, nothing's
perfect right?

  -hex

On Thu, Dec 23, 2010 at 5:19 PM, Stefan Salewski <mail@ssalewski.de> wrote:

> I really like to get "real/float" division results. I know that there
> are cases where one may need integer results, but for most of my
> applications I do not want it. For example for may cairo drawing test at
> http://www.ssalewski.de/PetEd-Demo.html.en unwanted integer results was
> a reason for some strange bugs.
>
> For Python there was something like "from future import division" to fix
> it. In Ruby we can use 3.to_f / 2 or 3.fdiv 2. I am not really happy
> with that notation, because I should use that always to ensure that I
> get always my desired result.
>
> Is there a simple way to redefine division, like Pythons  "from future
> import division"?. I have found a few tricks with Google (which I, still
> learning Ruby, do not really understand), but I am no expert, so I do
> not want to break something with ugly redefinition tricks.
>
> Best regards
>
> Stefan Salewski
>
>
>
>

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