what is Global`Class?
- To: mathgroup at smc.vnet.net
- Subject: [mg20354] what is Global`Class?
- From: Joe Strout <joe at strout.net>
- Date: Sat, 16 Oct 1999 00:47:42 -0400
- Organization: The Salk Institute
- Sender: owner-wri-mathgroup at wolfram.com
When I try to load the Classes module (from MathSource and written for
Mathematica 2.2) into Mathematica 4, I get the following warning:
Class::"shdw": "Symbol \!\(\"Class\"\) appears in multiple contexts \
\!\({\"Classes`\", \"Global`\"}\); definitions in context
\!\(\"Classes`\"\) \
may shadow or be shadowed by other definitions."
(Ugh, please excuse the ugly markup tags; I haven't figured out how to
avoid them ("Copy as Plain Text" doesn't do it, despite what it
claims)).
Anyway, it's saying there's a Global`Class symbol, and sure enough,
this shadows the one defined in classes: "Context[Class]" returns
"Global`".
What is this global Class symbol? It's not in the master index, and it
doesn't seem to have a ::usage.
Finally, is this the right module to be using for object-oriented
programming in Mathematica? If so, why hasn't it been updated since
v2.2, especially when it generates warnings and has inconvenient name
clashes?
Thanks,
-- Joe
--
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| Joseph J. Strout Biocomputing -- The Salk Institute |
| joe at strout.net http://www.strout.net |
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