Mercurial > hg

changeset 22812:fcd12b310148

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baseset: implement `first` and `last` methods
author Pierre-Yves David <pierre-yves.david@fb.com>
date Mon, 06 Oct 2014 14:42:00 -0700
parents c1fd827e1ae0
children 5a96df266b2b
files mercurial/revset.py
diffstat 1 files changed, 10 insertions(+), 0 deletions(-) [+]
line wrap: on
line diff
--- a/mercurial/revset.py	Mon Oct 06 12:52:36 2014 -0700
+++ b/mercurial/revset.py	Mon Oct 06 14:42:00 2014 -0700
@@ -2387,6 +2387,16 @@
         This is part of the mandatory API for smartset."""
         return False
 
+    def first(self):
+        if self:
+            return self[0]
+        return None
+
+    def last(self):
+        if self:
+            return self[-1]
+        return None
+
 class filteredset(abstractsmartset):
     """Duck type for baseset class which iterates lazily over the revisions in
     the subset and contains a function which tests for membership in the