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