# HG changeset patch
# User Paul Boddie <paul@boddie.org.uk>
# Date 1367432032 -7200
# Node ID 70a49534216f9f1695649243c295c49b86c5318c
# Parent  3374d92c9cff5ac64123f3cdd26196ed518c7511
Added missing operator functions.

diff -r 3374d92c9cff -r 70a49534216f lib/operator.py
--- a/lib/operator.py	Wed May 01 19:39:46 2013 +0200
+++ b/lib/operator.py	Wed May 01 20:13:52 2013 +0200
@@ -3,7 +3,7 @@
 """
 Operator support.
 
-Copyright (C) 2010 Paul Boddie <paul@boddie.org.uk>
+Copyright (C) 2010, 2013 Paul Boddie <paul@boddie.org.uk>
 
 This program is free software; you can redistribute it and/or modify it under
 the terms of the GNU General Public License as published by the Free Software
@@ -121,6 +121,9 @@
 def and_(a, b):
     return binary_op(a, b, lambda a: a.__and__, lambda b: b.__rand__)
 
+def contains(a, b):
+    return b in a
+
 def div(a, b):
     return binary_op(a, b, lambda a: a.__div__, lambda b: b.__rdiv__)
 
@@ -159,6 +162,9 @@
 def neg(a):
     return unary_op(a, lambda a: a.__neg__)
 
+def not_(a):
+    return not a
+
 def pos(a):
     return unary_op(a, lambda a: a.__pos__)