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A rule with condition for the elements of a list

• To: mathgroup at smc.vnet.net
• Subject: [mg33132] A rule with condition for the elements of a list
• From: guillerm at aida.usal.es (Guillermo Sanchez)
• Date: Tue, 5 Mar 2002 03:08:33 -0500 (EST)
• Sender: owner-wri-mathgroup at wolfram.com

Given a list like this : 
        
lst = {a, b, c*t, r*s, 2*t, 3, 0};

I would like build a rule (c -> c t) for each elements c of the list
that are not function of t  that give like solution :

Out[] := {a t, b t, c t, r s t, 2 t, 3 t, 0}

I have tested the following way but they are not work

lst /. (c_ /; FreeQ[c, t]) -> c*t

and 

integrate[c_, t_] := c t /; FreeQ[c, t]
lst /. c_ -> integrate[c, t]

I will appreciate your held

Guillermo Sanchez

• Follow-Ups:
  • RE: A rule with condition for the elements of a list
    • From: "Higinio Ramos" <higra@usal.es>
  • Re: A rule with condition for the elements of a list
    • From: Tomas Garza <tgarza01@prodigy.net.mx>