byte-length for specialized-vectors

basis/specialized-vectors/functor/functor.factor

@@ -1,6 +1,6 @@
 ! Copyright (C) 2008, 2009 Slava Pestov.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: functors sequences sequences.private growable
+USING: accessors alien.c-types functors sequences sequences.private growable
 prettyprint.custom kernel words classes math parser ;
 QUALIFIED: vectors.functor
 IN: specialized-vectors.functor
@@ -21,6 +21,8 @@ V A <A> vectors.functor:define-vector
 
 M: V contract 2drop ;
 
+M: V byte-length underlying>> byte-length ;
+
 M: V pprint-delims drop \ V{ \ } ;
 
 M: V >pprint-sequence ;