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MathGroup Archive 2004

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List of Variables and manipulating them ...

  • To: mathgroup at smc.vnet.net
  • Subject: [mg46935] List of Variables and manipulating them ...
  • From: Detlef Mueller <dmueller at mathematik.uni-kassel.de>
  • Date: Tue, 16 Mar 2004 19:54:59 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Hello,

I have the following Idea:

During a Session, a User can create some Variables, wich are
all of the Form 

x = MyType[L_list, S_anything].

say 

x=MyType[{1,2,5,6},Y],
y=MyType[{1,2,4,9},R], 
A99=MyType[{1,2,99},PI]
...
and so on.

Now I want to perform the following:

Take All Variables wich look like 
MyType[L, S] and replace L by some Function
of L, for example Sort L descending instead
of ascending.

For the given Example, after calling

ChangeAllMyTypeOrders[]

the Variables should changed and have the 
Values

x=MyType[{6,5,2,1},Y],
y=MyType[{9,4,2,1},R], 
A99=MyType[{99,2,1},S]
...
and so on.

Any Ideas, if and how this could be
achieved?

(The Problem appeared while creating Objects enriched
with some Information in them, as a Term-Order. Now 
I want to change this Order, and update all existing
objects ...)

greetings
  Detlef Mueller


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