Re: F[f_,x_]:=f[x] ?
- To: mathgroup at smc.vnet.net
- Subject: [mg20107] Re: [mg19819] F[f_,x_]:=f[x] ?
- From: Daniel Reeves <dreeves at eecs.umich.edu>
- Date: Thu, 30 Sep 1999 02:43:15 -0400
- Sender: owner-wri-mathgroup at wolfram.com
I just stumbled upon the built-in but undocumented function Compose, which
apparently does exactly that.
Comments from Wolfram developers...?
(probably a better functionality for Compose would be the last element of
ComposeList, to be consistent with Nest and Fold)
----- FROM Patrick McLean ON 99.09.17 01:37 (Sep 17) -----
> What is the name of the in-built Mathematica function that plays the role
> of F in te following:
>
> F[f_,x_]:=f[x].
>
> For example,
>
> Outer[F,{f,g},{x,y}]
>
> will give:
>
> {{f[x],f[y]},{g[x],g[y]}}.
>
> --
> Patrick McLean
>
> No news is good news...
>
-- -- -- -- -- -- -- -- -- -- -- --
Daniel Reeves http://ai.eecs.umich.edu/people/dreeves/
"If at first you don't succeed -- try, try again.
Then quit. No use being a damn fool about it."