From: William.H.Duquette@jpl.nasa.gov (William H. Duquette)
Subject: ANNOUNCE: Will's Guide to Creating Object Commands
Date: 9 Feb 1999 23:13:19 -0800

Now available:  Will's Guide to Creating Object Commands

See: http://www.cogent.net/~duquette/tcl

Overview:

The warm acceptance of my guide to namespaces and
packages (also available at the above URL) has lead me
to attempt something similar on another topic.

It's often nice to package some functionality as
an object, even in pure Tcl.  Tk widget commands
are the obvious example.  The question is, how
does one do it?  And how does one do it well?
The answer is particularly complicated by the
presence of namespaces.  Tk widget commands
necessarily live in the global namespace; other
objects should live in the namespace in which
the programmer creates them.  This leads to
a surprising number of issues.

As with my previous guide, I submit this for 
comments and corrections.  If you think I'm
recommending something that's sub-optimal,
let me know.  If you think I'm making a 
serious mistake, let me know.  If there are
related techniques or issues that you think
I should discuss, let me know.

Will Duquette

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