Mercurial > hg
changeset 22225:baecf4e1b7d0
ancestors: add a __nonzero__ method
This allows using the object in a conditional the same way we can use list.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Fri, 15 Aug 2014 15:57:50 -0700 |
| parents | f713de1d3916 |
| children | 827bce9e24fb |
| files | mercurial/ancestor.py |
| diffstat | 1 files changed, 8 insertions(+), 0 deletions(-) [+] |
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--- a/mercurial/ancestor.py Fri Aug 15 15:25:12 2014 -0700 +++ b/mercurial/ancestor.py Fri Aug 15 15:57:50 2014 -0700 @@ -246,6 +246,14 @@ else: self._containsseen = set() + def __nonzero__(self): + """False if the set is empty, True otherwise.""" + try: + iter(self).next() + return True + except StopIteration: + return False + def __iter__(self): """Generate the ancestors of _initrevs in reverse topological order.