Re: loading packages-followup
- To: mathgroup at smc.vnet.net
- Subject: [mg14394] Re: loading packages-followup
- From: "P.J. Hinton" <paulh>
- Date: Sun, 18 Oct 1998 15:10:00 -0400
- Organization: "Wolfram Research, Inc."
- References: <email@example.com>
- Sender: owner-wri-mathgroup at wolfram.com
On 15 Oct 1998 sean_ross_at_pl-04m3 at smtpgw1.plk.af.mil wrote: > This is in response to my earlier question about why packages I > wrote > wouldn't load. The answer is that code written in the 3.0.1 > FrontEnd > and Saved As Special:Package Format is commented out in the save > routine, thus all packages written in the front end and saved in > what > appears to be the intended manner have an extra (* at the front of > the > file and an extra *) at the end, effectively disabling the code. > If > you remove these in a text editor, the package can be read in and > everything loads just fine. I now have two more questions related > to > this. > > 1) is this placing of extra (* and *) in packages by the > SaveAsSpecial:Package Format a "feature" or a "bug"? The Save As Special -> Package Format command exports the contents of cells which have the InitializationCell option set to True. Contents of cells that do not meet this criterion will be commented out. > 2) The kernel knows to search the \ProgrammingInMathematica and the > > \Utilities subdirectories of the ExtraPackages folder. If I put my > > own subdirectory in the ExtraPackages folder, the Kernel does not > search there. Why? I got around it by appending the path to the > $Path variable in the init.m, but I am still curious as to how the > Kernel knew it was supposed to search only those two subdirectories > > but wouldn't search mine even though none of them was listed > explicitly in the $Path. Are you loading the package with a context name that reflects the relative path from a directory on $Path? For example, in order to load the packages in the ExtraPackages directory, you have to issue commands like: Needs["ProgrammingInMathematica`ChaosGame"] because ExtraPackages is on $Path, but the ProgrammingInMathematica subdirectory is not. -- P.J. Hinton Mathematica Programming Group paulh at wolfram.com Wolfram Research, Inc. http://www.wolfram.com/~paulh/ Disclaimer: Opinions expressed herein are those of the author alone.