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Re: Simple question about named variables.

• To: mathgroup at smc.vnet.net
• Subject: [mg101245] Re: [mg101187] Simple question about named variables.
• From: "Scot Martin" <smartin at seas.harvard.edu>
• Date: Sat, 27 Jun 2009 06:07:22 -0400 (EDT)
• Organization: Harvard University
• References: <200906261050.GAA18205@smc.vnet.net>
• Reply-to: <scot_martin at harvard.edu>

Perhaps I'm missing your intention, but the following very simple
interaction appears to achieve your goal:

In[1]:= x = 5

Out[1]= 5

In[2]:= ClearI[y_] := Clear[x]

In[3]:= ClearI[x]

In[4]:= x

Out[4]= x




-----Original Message-----
From: Pianiel [mailto:pdpdel at gmail.com] 
Sent: Friday, June 26, 2009 06:51
To: mathgroup at smc.vnet.net
Subject: [mg101245] [mg101187] Simple question about named variables.

Dear Mathematica users,

I would like to write a function which clears many variables called:

Test1,Test2,...

So I write the function:

ClearI[i_] := Clear@ToExpression@StringJoin["Test", ToString@i]

Test1 = 1;
Test2 = 2;


ClearI[1] does not work because the expression is evaluated. What
mathematica does is Clear@1. How could I ask Mathematica to do
Clear@Test1, Clear@Test2, ... automatically?

I am sure that the solution is simple... but I could not find it.

Thank you in advance

Pianiel

• References:
  • Simple question about named variables.
    • From: Pianiel <pdpdel@gmail.com>