From: Lloyd Linklater <lloyd@2live4.com>
Date: 2008-09-04T22:27:27+09:00
Subject: Re: Can a Ruby program determine whether it's running on a 32-bit or  64-bit system?

Suraj Kurapati wrote:
> Eric Promislow wrote:
>> Can a Ruby program determine whether 
>> it's running on a 32-bit or 64-bit system?
> 
> Yes.  Look at the result of calling the 'size' method on a Fixnum; it 
> will be 4 on 32-bit machines, and 8 on 64-bit machines.
> 
>>> 0.size
> => 4

On my 32 bit machine I get this:
p 0.size
=> 8

p [ -1 ].pack('l!').length
=> 4

I am not sure why, but there it is, fyi.
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