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Re: How can you get the list of all used variables and functions

  • To: mathgroup at smc.vnet.net
  • Subject: [mg91924] Re: How can you get the list of all used variables and functions
  • From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
  • Date: Sat, 13 Sep 2008 05:53:31 -0400 (EDT)
  • Organization: The Open University, Milton Keynes, UK
  • References: <gadcrg$rqi$1@smc.vnet.net>

Weber wrote:

> How can you get the list of all used variables and functions in
> Mathematica? Is that possible?

Depending on what you intend to do with the result, you could use ? or 
Names. For instance, the following will give you all the user defined 
functions and variables (located in the context Global by default)

In[1]:= f[x_] := x^2

In[2]:= g[x_, y_] := x^2 + y^2

In[3]:= ?Global`*

Global`
f	g	x	y

In[4]:= lst = Names["Global`*"]

Out[4]= {"f", "g", "lst", "x", "y"}

In[5]:= Definition /@ lst // TableForm

Out[5]//TableForm=
           2
f[x_] := x

               2    2
g[x_, y_] := x  + y

lst = {f, g, lst, x, y}

Null

Null

Regards,
-- Jean-Marc


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