Re: 2nd arg to BeginPackage
- To: mathgroup at smc.vnet.net
- Subject: [mg24789] Re: 2nd arg to BeginPackage
- From: "Allan Hayes" <hay at haystack.demon.co.uk>
- Date: Thu, 10 Aug 2000 00:32:51 -0400 (EDT)
- References: <8mr1c5$1mj@smc.vnet.net>
- Sender: owner-wri-mathgroup at wolfram.com
Daniel,
Replacing
BeginPackage["TestPkg`", "Statistics`"];
with
BeginPackage["TestPkg`"];
<<Statistics`];
or with
BeginPackage["TestPkg`"];
Needs["Statistics`"]
seems to do what you want.
Allan
---------------------
Allan Hayes
Mathematica Training and Consulting
Leicester UK
www.haystack.demon.co.uk
hay at haystack.demon.co.uk
Voice: +44 (0)116 271 4198
Fax: +44 (0)870 164 0565
"Daniel Reeves" <dreeves at eecs.umich.edu> wrote in message
news:8mr1c5$1mj at smc.vnet.net...
> My first question is, there seems to be a discrepancy between the
> documentation for BeginPackage:
> BeginPackage["Package`", {"Needed1`", "Needed2`", ...}]
> vs how standard packages use it:
> BeginPackage["Package`", "Needed1`", "Needed2`", ...]
>
> My next question is, why doesn't either form do what I expect here:
>
> BeginPackage["TestPkg`", "Statistics`"];
> ff::usage = "Some function that uses CDF."
> Begin["`Private`"];
> ff[a_] := CDF[NormalDistribution[0,1], a]
> End[]; (* Private context *)
> EndPackage[];
>
> In the definition of ff, it thinks the context for CDF (and
> NormalDistr) is TestPkg`Private` instead of Statistics`...
>
> How can I avoid spelling out the contexts for things like CDF?
>
> Thanks a lot,
> Daniel Reeves
>
> -- -- -- -- -- -- -- -- -- -- -- --
> Daniel Reeves http://ai.eecs.umich.edu/people/dreeves/
>
> "You think you know when you learn,
> are more sure when you can write,
> even more when you can teach,
> but certain when you can program." -- Alan Perlis
>
>