# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1283728138 -7200
# Node ID bd11b8c03676d81b2bbeb4a1cf5dbadadeb87e11
# Parent  762cc6e1a94e506b7e3c2d5c8e865c3087d62158
Added a note about frame re-use where parameters do not change.

diff -r 762cc6e1a94e -r bd11b8c03676 TO_DO.txt
--- a/TO_DO.txt	Mon Sep 06 00:48:34 2010 +0200
+++ b/TO_DO.txt	Mon Sep 06 01:08:58 2010 +0200
@@ -6,6 +6,10 @@
 to the function. A strict tuple check is permissible according to the CPython behaviour,
 but an iterable would be more elegant (as would *args).
 
+Local assignment detection plus frame re-use. Example: slice.__init__ calls
+xrange.__init__ with the same arguments which are unchanged in xrange.__init__. There is
+therefore no need to build a new frame for this call.
+
 Consider attribute usage observations being suspended inside blocks where AttributeError
 may be caught (although this doesn't anticipate such exceptions being caught outside a
 function altogether).