From: Josh Cheek <josh.cheek@...>
Date: 2010-09-05T02:01:50+09:00
Subject: Re: p vs. print

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On Sat, Sep 4, 2010 at 11:02 AM, Chad Perrin <code@apotheon.net> wrote:

> On Fri, Sep 03, 2010 at 04:40:45AM +0900, Quintus wrote:
> >
> > irb(main):003:0> print [1, 2, 3]
> > [1, 2, 3]=> nil
>
> Are you sure about that?  I get this:
>
>    irb(main):001:0> print [1, 2, 3]
>    123=> nil
>
> The result you showed should probably be produced by:
>
>    print [1, 2, 3].inspect
>
> --
> Chad Perrin [ original content licensed OWL: http://owl.apotheon.org ]
>

Differences in versions. You can get an account at
http://ruby-versions.net/and play around like this



$ rvm ruby-1.8.6-p399,ruby-1.8.7-p174,ruby-1.9.1-p378,ruby-1.9.2-p0 -e
'print [1,2,3]'

info: ruby-1.8.6-p399: ruby 1.8.6 (2010-02-05 patchlevel 399) [x86_64-linux]


123
info: ruby-1.8.7-p174: ruby 1.8.7 (2009-06-12 patchlevel 174) [x86_64-linux]


123
info: ruby-1.9.1-p378: ruby 1.9.1p378 (2010-01-10 revision 26273)
[x86_64-linux]

[1, 2, 3]
info: ruby-1.9.2-p0: ruby 1.9.2p0 (2010-08-18 revision 29036) [x86_64-linux]


[1, 2, 3]



Going back further, it has been '123' as far back as Ruby 1.0

$ ruby-1.0 -e 'print [1,2,3]'
123

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