# HG changeset patch
# User Jun Wu <quark@fb.com>
# Date 2017-06-03 02:32:27
# Node ID 2c1400d43fd2988961816fc9ab3679c25f91fe92
# Parent  12941a782928039c075ff67dbf4bbb8078c5f251

obsstore: minor optimization for the obsolete revset

Use local variables in a loop.

diff --git a/mercurial/obsolete.py b/mercurial/obsolete.py
--- a/mercurial/obsolete.py
+++ b/mercurial/obsolete.py
@@ -1277,12 +1277,10 @@ def clearobscaches(repo):
 @cachefor('obsolete')
 def _computeobsoleteset(repo):
     """the set of obsolete revisions"""
-    obs = set()
     getnode = repo.changelog.node
     notpublic = repo._phasecache.getrevset(repo, (phases.draft, phases.secret))
-    for r in notpublic:
-        if getnode(r) in repo.obsstore.successors:
-            obs.add(r)
+    isobs = repo.obsstore.successors.__contains__
+    obs = set(r for r in notpublic if isobs(getnode(r)))
     return obs
 
 @cachefor('unstable')