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Re: F[f_,x_]:=f[x] ?

• To: mathgroup at smc.vnet.net
• Subject: [mg20130] Re: [mg19819] F[f_,x_]:=f[x] ?
• From: "P.J. Hinton" <paulh at wolfram.com>
• Date: Sat, 2 Oct 1999 03:04:56 -0400
• Organization: "Wolfram Research, Inc."
• References: <7sv0d2$23k@smc.vnet.net>
• Sender: owner-wri-mathgroup at wolfram.com

On 30 Sep 1999, Daniel Reeves wrote:

> 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)

Compose[] was deemed obsolete between versions 1 and 2 of the Mathematica
kernel.  It should be replaced with its successor Composition[].  See _The
Mathematica Book_, Appendix A.13.2.

--
P.J. Hinton
Mathematica Programming Group           paulh at wolfram.com
Wolfram Research, Inc.
Disclaimer: Opinions expressed herein are those of the author alone.