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Re: Needs[] and <<

• To: mathgroup at smc.vnet.net
• Subject: [mg23077] Re: Needs[] and <<
• From: Murray Eisenberg <murray at math.umass.edu>
• Date: Sat, 15 Apr 2000 03:00:34 -0400 (EDT)
• Organization: Mathematics & Statistics, Univ. of Mass./Amherst
• References: <8d3qq8$odh@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

<< is a special input form for Get.


<<name reads in a file, evaluating each expression in it, and returning
the last one. 

Needs["context`", "file"] loads file if the specified context is not
already in $Packages. 

But you probably knew that difference.  As to reasons The Book uses the
first rather than the second, I can only speculate.  Shorter to type,
for one; does no harm (except for some wasted time), for another.



Hans Friedrich Steffani wrote:
> 
> Why does the examples in the Mathematica book say
> << Graphics`Graphics`
> instead of
> Needs["Graphics`Graphics`"]
> ?
> 
> Hans Friedrich Steffani
> 
> --
> Hans Friedrich Steffani
> Institut fuer Elektrische Maschinen und Antriebe, TU Chemnitz
> mailto:hans.steffani at e-technik.tu-chemnitz.de
> http://www.tu-chemnitz.de/~hfst/

-- 
Murray Eisenberg                     murray at math.umass.edu
Mathematics & Statistics Dept.       phone 413 549-1020 (H)
Univ. of Massachusetts                     413 545-2859 (W)
Amherst, MA 01003-4515