Revert "hash-sets: faster M\ hash-set union."

This reverts commit bb7a1017f523a4e81b2aee041bd627b3484e65d7.

diff --git a/core/hash-sets/hash-sets.factor b/core/hash-sets/hash-sets.factor
index b01fe6fa9e204767d9ebda6b95646c144a2f5fda..a094c015b23ce2b4d40a10d132ccfd2b39879ab4 100644 (file)
--- a/core/hash-sets/hash-sets.factor
+++ b/core/hash-sets/hash-sets.factor
@@ -136,8 +136,7 @@ INSTANCE: hash-set set
 
 M: hash-set intersect small/large sequence/tester filter >hash-set ;
 
-M: hash-set union
-    [ ?members ] [ clone ] bi* [ [ adjoin ] curry each ] keep ;
+M: hash-set union (union) >hash-set ;
 
 M: hash-set diff sequence/tester [ not ] compose filter >hash-set ;