D6206: branchmap: implement __contains__()

[pulkit (Pulkit Goyal)]

pulkit created this revision.
Herald added a subscriber: mercurial-devel.
Herald added a reviewer: hg-reviewers.

REVISION SUMMARY
  We have good occurences of `if branch in branchmap()` in our code. If
  __contains__() is not implemented then it will use __iter__() to find whether
  the element exists or not which is not good.
  
  I am bit confused that whether I should move existing callers to hasbranch() or
  this patch is a good way.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D6206

AFFECTED FILES
  mercurial/branchmap.py

CHANGE DETAILS

diff --git a/mercurial/branchmap.py b/mercurial/branchmap.py
--- a/mercurial/branchmap.py
+++ b/mercurial/branchmap.py
@@ -182,6 +182,9 @@
     def __getitem__(self, key):
         return self._entries[key]
 
+    def __contains__(self, key):
+        return key in self._entries
+
     def iteritems(self):
         return self._entries.iteritems()
 



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