Re: Question about Cases command.
- To: mathgroup at yoda.physics.unc.edu
- Subject: Re: Question about Cases command.
- From: Count Dracula <lk3a at kelvin.seas.virginia.edu>
- Date: Tue, 28 Jun 1994 14:10:32 -0400
I there is a syntax problem in your input:
Mathematica 2.2 for IBM RISC System/6000
Copyright 1988-93 Wolfram Research, Inc.
-- Motif graphics initialized --
In[1]:= list={Derivative[1,2][a][x,y], Derivative[1,1][b][x,y]};
In[2]:= Cases[list, Derivative[__][a][__]]
(1,2)
Out[2]= {a [x, y]}
and Cases works as you would expect.
_______________________________________________________________
Levent Kitis
Department of Mechanical, Aerospace and Nuclear Engineering
Thornton Hall McCormick Road
University of Virginia
Charlottesville, Virginia 22903 USA
804-924-6230 lk3a at cars.mech.virginia.edu
804-924-3291 lk3a at kelvin.seas.virginia.edu
_______________________________________________________________