Mercurial > public > mercurial-scm > hg

diff mercurial/context.py @ 8527:f9a80054dd3c

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
use 'x is None' instead of 'x == None' The built-in None object is a singleton and it is therefore safe to compare memory addresses with is. It is also faster, how much depends on the object being compared. For a simple type like str I get: | s = "foo" | s = None ----------+-----------+---------- s == None | 0.25 usec | 0.21 usec s is None | 0.17 usec | 0.17 usec
author Martin Geisler <mg@lazybytes.net>
date Wed, 20 May 2009 00:52:46 +0200
parents 36448afdadd4
children 4ddffb793d18
line wrap: on
line diff
--- a/mercurial/context.py	Wed May 20 00:43:23 2009 +0200
+++ b/mercurial/context.py	Wed May 20 00:52:46 2009 +0200
@@ -444,7 +444,7 @@
 
         # prime the ancestor cache for the working directory
         for c in (self, fc2):
-            if c._filerev == None:
+            if c._filerev is None:
                 pl = [(n.path(), n.filenode()) for n in c.parents()]
                 acache[(c._path, None)] = pl