factor: trim using lists

[factor.git] / extra / benchmark / backtrack / backtrack.factor

diff --git a/extra/benchmark/backtrack/backtrack.factor b/extra/benchmark/backtrack/backtrack.factor
index 4aab071b80c1141608dfe8a48b1b858ba8fbd784..6074aae8433dd1902d624d0e386b0fedd7cc3447 100644 (file)
--- a/extra/benchmark/backtrack/backtrack.factor
+++ b/extra/benchmark/backtrack/backtrack.factor
@@ -1,8 +1,7 @@
 ! Copyright (C) 2008 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: backtrack shuffle math ranges quotations locals fry
-kernel words io memoize macros prettyprint sequences assocs
-combinators namespaces ;
+USING: assocs backtrack kernel math memoize ranges sequences
+words ;
 IN: benchmark.backtrack
 
 ! This was suggested by Dr_Ford. Compute the number of quadruples