better implementation of hash

to_a wasn't always returning things in the same order so now it actually works
rdp · Apr 14, 2009 · 31a16fb · 31a16fb
1 parent 4c3a989
commit 31a16fb
Showing 1 changed file with 3 additions and 1 deletion.
diff --git a/lib/sequence/weakrefset.rb b/lib/sequence/weakrefset.rb
@@ -113,7 +113,9 @@ def == other
   alias eql? ==
 
   def hash
-      to_a.hash
+    result=0
+    each{|x| result^=x.hash }
+    result
   end
 
   # clear the set (return self)