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Re: finding all definitions matching a pattern

  • To: mathgroup at smc.vnet.net
  • Subject: [mg98040] Re: finding all definitions matching a pattern
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sat, 28 Mar 2009 05:45:31 -0500 (EST)
  • References: <gqiaar$opg$1@smc.vnet.net>

Hi,

F[0] = 3;
F[1] = 7;
F[3] = 11;

and

DownValues[F] /.
  Verbatim[RuleDelayed][Verbatim[HoldPattern][F[a_]], b_] :> {a, b}

Regards
   Jens

Roman wrote:
> Dear Mathematica user:
> 
> Assume we have a number of definitions associated with a symbol F, for
> example:
>    F[0] = 3;
>    F[1] = 7;
>    F[3] = 11;
> 
> What I need is an automated way to generate the list of definitions,
> something like
> In[1] := getdefs[F]
> Out[1] = {{0,3},{1,7},{3,11}}
> 
> Would you know how to write this function "getdefs"? I am having
> trouble extracting any useful information from a call to Definition[F]
> since it seems to wrap its output somehow.
> 
> Thanks!
> Roman.
> 


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