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

```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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