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Re: For Loop and Array related

• To: mathgroup at smc.vnet.net
• Subject: [mg58076] Re: For Loop and Array related
• From: Paul Abbott <paul at physics.uwa.edu.au>
• Date: Fri, 17 Jun 2005 07:09:24 -0400 (EDT)
• Organization: The University of Western Australia
• References: <200506150958.FAA29716@smc.vnet.net> <d8rhni$i8c$1@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

In article <d8rhni$i8c$1 at smc.vnet.net>,
 Andrzej Kozlowski <andrzej at akikoz.net> wrote:

> One more thing. I have no idea why
> 
> << discretemath`
> 
> loads all discrete math packages. 

I use this construct all the time. Actually, it does _not_ load the 
packages -- it just loads the package Stubs 

> I noticed Maxim doing so I tried it and it worked this but I don't think
> it is a documented feature. Does anyone know?

Look up Stub in the Help Browser. There it says that

  Stub is an attribute which specifies that if a symbol is ever used, 
  Needs should automatically be called on the context of the symbol. 

This is used in all the StandardPackages.

> Of course what really is needed above is only the Combinatorica  
> package and the normal, documented way of reading it in is
> 
> <<DiscreteMath`Combinatorica`

Using Stub, only this package gets loaded.

Cheers,
Paul

-- 
Paul Abbott                                      Phone: +61 8 6488 2734
School of Physics, M013                            Fax: +61 8 6488 1014
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        http://InternationalMathematicaSymposium.org/IMS2005/

• References:
  • For Loop and Array related
    • From: "mchangun@gmail.com" <mchangun@gmail.com>