streamline skiplist a bit

[nbds] / todo

diff --git a/todo b/todo
index 805a9a55a7ecf8fb09054db3a9e2e409df02ba68..6586b8747e49085d343896d76695c60ffeed8ee8 100644 (file)
--- a/todo
+++ b/todo
@@ -5,3 +5,5 @@
 + optimize tracing code, still too much overhead
 + use NULL instead of a sentinal node in skiplist and list
 - make interfaces for all data structures consistent 
++ make list and skiplist use string keys
+- optimize integer keys