! See http://factorcode.org/license.txt for BSD license.
USING: accessors kernel words summary slots quotations
sequences assocs math arrays stack-checker effects generalizations
-continuations debugger classes.tuple namespaces vectors
+continuations debugger classes.tuple namespaces make vectors
bit-arrays byte-arrays strings sbufs math.functions macros
sequences.private combinators mirrors
combinators.short-circuit ;