Re: Obtaining information about function definitions
- To: mathgroup at smc.vnet.net
- Subject: [mg114812] Re: Obtaining information about function definitions
- From: Bob Hanlon <hanlonr at cox.net>
- Date: Fri, 17 Dec 2010 23:48:08 -0500 (EST)
f["abc"][x_] := 1;
f["def"][x_] := 2;
f["ghi"][x_] := 3;
Cases[SubValues[f], f[str_][_] :> str, 3]
{"abc", "def", "ghi"}
Bob Hanlon
---- ntg <ntgladd at gmail.com> wrote:
=============
Suppose I have defined a set of functions associated with symbol f and
indexed by strings, for example
f["abc"][x_] := 1;
f["def"][x_] := 2;
f["ghi"][x_] := 3;
...
I would like to write a program that defines a new set of functions
associated with g and indexed by the same strings.
How can I obtain a list of all the strings that have been used as
indexes of f? Both Information[f] and Definition[f] result in output
that "shows" me the information I seek. But I can't access and
manipulate that information. There must be a way to do this. Can
anyone help?
Thanks,
Tom