Added note on the fact that the length of a BTree, TreeSet, or

items expensive.

Added note on the fact that the length of a BTree, TreeSet, or
items expensive.
a445151b · Jim Fulton · 66638631 · a445151b
Commit a445151b authored Feb 22, 2001 by Jim Fulton
Show whitespace changes
Inline Side-by-side

Showing with 11 additions and 3 deletions

src/BTrees/Interfaces.py src/BTrees/Interfaces.py +11 -3

No files found.
--- a/src/BTrees/Interfaces.py
+++ b/src/BTrees/Interfaces.py
@@ -291,8 +291,16 @@ class IIMerge(IMerge):
        passed as one of the collections.
        """

-        
-    
+###############################################################
+# IMPORTANT NOTE
+#
+# Getting the length of a BTree, TreeSet, or output of keys,
+# values, or items of same is expensive. If you need to get the
+# length, you need to maintain this separately.
+#
+# Eventually, I need to express this through the interfaces.
+#
+################################################################

    
 Interface.assertTypeImplements(OOBTree.OOSet, ISet)