Making <hash-set> faster

diff --git a/core/hash-sets/hash-sets.factor b/core/hash-sets/hash-sets.factor
index 248b4af4c6c2e56a470b3394417d4bbcfb3bef92..b4bf9a1aef049f5d2a5b2e58fbe4c00b1f623f6e 100644 (file)
--- a/core/hash-sets/hash-sets.factor
+++ b/core/hash-sets/hash-sets.factor
@@ -9,7 +9,7 @@ IN: hash-sets
 TUPLE: hash-set { table hashtable read-only } ;
 
 : <hash-set> ( members -- hash-set )
-    [ dup ] H{ } map>assoc hash-set boa ;
+    H{ } clone [ [ dupd set-at ] curry each ] keep hash-set boa ;
 
 INSTANCE: hash-set set
 M: hash-set in? table>> key? ; inline