From: Josh Cheek <josh.cheek@...>
Date: 2011-09-19T16:59:16+09:00
Subject: Re: Ruby Speed Question

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On Mon, Sep 19, 2011 at 2:48 AM, Robert Klemme
<shortcutter@googlemail.com>wrote:

> On Sun, Sep 18, 2011 at 8:42 PM, Josh Cheek <josh.cheek@gmail.com> wrote:
>
> > Some reasons differences between the Ruby and Java versions are that Ruby
> > doesn't have primitives, so all those numbers are objects (ie using
> Java's
> > Integer rather than int).
>
> This is not 100% true.  While they are from a language user's
> perspective under the hood there are some optimizations especially for
> Fixnums.  This still leaves overhead for method invocation but memory
> usage is very low and there is no GC overhead.
>
> Kind regards
>
> robert
>
> --
> remember.guy do |as, often| as.you_can - without end
> http://blog.rubybestpractices.com/
>
>
I've had people say this to me in the past, but I don't understand how this
can be, given that I can set instance variables on Fixnums:

1.class # => Fixnum
1.instance_variable_set :@abc, 12
1.instance_variable_get :@abc # => 12

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