Mercurial > public > mercurial-scm > hg
comparison mercurial/revset.py @ 22810:7f97cb12782f
addset: implement first and last methods
The implementation is non-lazy for now. One may want to make it more lazy in the
future.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Mon, 06 Oct 2014 11:57:59 -0700 |
| parents | 88dad916c008 |
| children | c1fd827e1ae0 |
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| 22809:88dad916c008 | 22810:7f97cb12782f |
|---|---|
| 2616 def reverse(self): | 2616 def reverse(self): |
| 2617 self._list.reverse() | 2617 self._list.reverse() |
| 2618 if self._ascending is not None: | 2618 if self._ascending is not None: |
| 2619 self._ascending = not self._ascending | 2619 self._ascending = not self._ascending |
| 2620 | 2620 |
| 2621 def first(self): | |
| 2622 if self: | |
| 2623 return self._list.first() | |
| 2624 return None | |
| 2625 | |
| 2626 def last(self): | |
| 2627 if self: | |
| 2628 return self._list.last() | |
| 2629 return None | |
| 2630 | |
| 2621 class generatorset(abstractsmartset): | 2631 class generatorset(abstractsmartset): |
| 2622 """Wrap a generator for lazy iteration | 2632 """Wrap a generator for lazy iteration |
| 2623 | 2633 |
| 2624 Wrapper structure for generators that provides lazy membership and can | 2634 Wrapper structure for generators that provides lazy membership and can |
| 2625 be iterated more than once. | 2635 be iterated more than once. |