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Re: A Package Function Tutorial

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  • Subject: [mg92246] Re: [mg92228] A Package Function Tutorial
  • From: "Mauricio Esteban Cuak" <cuak2000 at>
  • Date: Wed, 24 Sep 2008 03:31:23 -0400 (EDT)
  • References: <>

Just a small comment that probably only adresses beginners like me:

While a function with all the bells and whistles can have a lot of good
things, I often
spend too much time trying to figure out how a function works when i
download a package.
If it had less of all that nice stuff, I could understand how it works and
avoid feeding it with the wrong input (instead of not understanding it and
having the function tell me that it's a wrong input)
Of course, I am not suggesting people shouldn't write professional looking
functions; I'm only saying that sometimes there's a trade-off, at least for
beginners like me that are trying to understand how the functions work.


2008/9/23 <blackhole at>

> I have written a brief introduction to writing package functions that
> implement most of the bells and whistles one would associate with a
> professionally written function.  Some of the topics covered are
> implementation of Automatic in functions, overloading of built-in
> symbols, and others.
> Yes, most of the material can be found scattered in the shipping
> documentation, but my sense is that there is no good place to find
> essentially a checklist of the features a good function should have,
> like argument checking, attributes, syntax coloring, etc.  You will
> find that I am no expert, but perhaps someone at Wolfram (or
> elsewhere) will be offended enough to contribute some good
> suggestions.
> You can find it at my website,
> Here you will also find a package I published last month, a NURBS
> package providing a bridge from parametric curves and surfaces to CAD-
> friendly IGES format.

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