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Re: private routines in mathematica 6 packages?

• To: mathgroup at smc.vnet.net
• Subject: [mg81048] Re: private routines in mathematica 6 packages?
• From: Jean-Marc Gulliet <jeanmarc.gulliet at gmail.com>
• Date: Sun, 9 Sep 2007 06:14:54 -0400 (EDT)
• Organization: The Open University, Milton Keynes, UK
• References: <fbqqme$79m$1@smc.vnet.net>

Tanim Islam wrote:

> How do I make certain functions within a mathematica package private or
> protected? By private or protected, I mean that these functions cannot be
> called directly by the user in a mathematica notebook.

Enclose all your function within a private block (f and g in the example 
below). Write a usage message for the functions that must be exported (f 
in our case), everything else will be hidden (that is g in the toy example).

-------------------------- beginning of the file -----------------------

BeginPackage["mypackage`"]

f::usage = "f[x] returns the square of the sin of x."

Begin["`Private`"]

g[x_] := Sin[x]

f[x_] := g[x]^2

End[ ]

EndPackage[ ]

----------------------------- end of the file --------------------------

-- 
Jean-Marc