From: Charles Oliver Nutter <headius@...>
Date: 2011-04-13T21:23:14+09:00
Subject: Re: Hash Surprises with Fixnum, #hash, and #eql?

On Wed, Apr 13, 2011 at 1:35 AM, Clifford Heath <no@spam.please.net> wrote:
> On 04/13/11 15:51, Charles Oliver Nutter wrote:
>> Perhaps I'm missing something. Should I be seeing different results than
>> this?
>>
>> https://gist.github.com/917031
>
> That result is reasonable, using MRI. Interesting, and nice, that it
> figures out it doesn't need to call Fixnum#hash to be able to choose
> a bucket. (BTW, that *uncommon* case means there's a test and branch
> which is superfluous and excessively costly for the more common case,
> according to arguments you've made against detecting monkey patching)
>
> If you do the same thing with JRuby however, the first test contains this:

This is JRuby 1.6.1.

- Charlie