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Re: Package File for Different Mathematica Versions

• To: mathgroup at smc.vnet.net
• Subject: [mg89966] Re: Package File for Different Mathematica Versions
• From: David Bailey <dave at Remove_Thisdbailey.co.uk>
• Date: Wed, 25 Jun 2008 06:28:29 -0400 (EDT)
• References: <g3q7sh$arq$1@smc.vnet.net>

Andrew Beveridge wrote:
> I am writing a package file for Mathematica. I have two versions of 
> Mathematica targeted: 5.2 and 6.0.x.
> 
> It would be nice to use some of the improvements in Version 6.0.x 
> without losing backwards compatibility with Version 5.2.
> 
> I imagine one way to implement this would be the following:
> 
> If $VersionNumber >= 6 then ... else ...
> 
> However, I would prefer not to put a bunch of If statements into my 
> code; multiple lines would have to be modified. Is there are more 
> elegant way around this problem? Can a function be defined for a 
> particular versions of Mathematica in a package file?
> 
> Thanks again for all of your help.
> 
> Regards,
> Andrew
> 
> Andrew C Beveridge
> MS M888
> Los Alamos National Laboratory
> Los Alamos, NM  87545
> 
> 505-665-2092
> e-mail: acbev at lanl.gov

You can put whole function definitions inside an If:

If[$VersionNumber >= 6,
fff[]:=Print["V6"],
fff[]:=Print["Pre V6"]
];

David Bailey
http://www.dbaileyconsultancy.co.uk