E&S CVS Commit: pylib - Refactored to separate the notions of Once and OnceClass from the notion

[pje at eby-sarna.com]

Module Name:	pylib
Committed By:	pje
Date:		Tue Feb 26 21:38:57 UTC 2002

Modified Files:
	pylib/TW: Caching.py
	pylib/TW/API: Meta.py __init__.py
	pylib/TW/SEF: Basic.py
Added Files:
	pylib/TW/API: Misc.py

Log Message:
Refactored to separate the notions of Once and OnceClass from the notion
of a NamedDescriptor.  Now TW.API includes a Once() descriptor that wraps
a function for computing a cached attribute value, and a OnceClass
metaclass for creating classes that do the same.


To view diffs of this commit, you can use the following URL(s):
http://cvs.eby-sarna.com/pylib/TW/Caching.py.diff?r1=1.1&r2=1.2
http://cvs.eby-sarna.com/pylib/TW/API/Meta.py.diff?r1=1.2&r2=1.3
http://cvs.eby-sarna.com/pylib/TW/API/Misc.py?rev=1.1&content-type=text/vnd.viewcvs-markup
http://cvs.eby-sarna.com/pylib/TW/API/__init__.py.diff?r1=1.7&r2=1.8
http://cvs.eby-sarna.com/pylib/TW/SEF/Basic.py.diff?r1=1.3&r2=1.4

To generate a diff of this commit:
cvs rdiff -r1.1 -r1.2 pylib/TW/Caching.py
cvs rdiff -r1.2 -r1.3 pylib/TW/API/Meta.py
cvs rdiff -r0 -r1.1 pylib/TW/API/Misc.py
cvs rdiff -r1.7 -r1.8 pylib/TW/API/__init__.py
cvs rdiff -r1.3 -r1.4 pylib/TW/SEF/Basic.py

Please note that diffs are not public domain; they are subject to the
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