Mercurial > public > mercurial-scm > hg
comparison mercurial/revset.py @ 22995:2587631c5f8a
revset: make __len__ part of the offical API
It is common for code to ask for the length of a revset. In fact, all but
generatorset already implement it.
| author | Pierre-Yves David <pierre-yves.david@fb.com> |
|---|---|
| date | Wed, 15 Oct 2014 04:26:23 -0700 |
| parents | 5aae3dea8044 |
| children | a43d929d1fa1 |
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| 22994:840be5ca03e1 | 22995:2587631c5f8a |
|---|---|
| 2253 """return the last element in the set (user iteration perspective) | 2253 """return the last element in the set (user iteration perspective) |
| 2254 | 2254 |
| 2255 Return None if the set is empty""" | 2255 Return None if the set is empty""" |
| 2256 raise NotImplementedError() | 2256 raise NotImplementedError() |
| 2257 | 2257 |
| 2258 def __len__(self): | |
| 2259 """return the length of the smartsets | |
| 2260 | |
| 2261 This can be expensive on smartset that could be lazy otherwise.""" | |
| 2262 raise NotImplementedError() | |
| 2263 | |
| 2258 def reverse(self): | 2264 def reverse(self): |
| 2259 """reverse the expected iteration order""" | 2265 """reverse the expected iteration order""" |
| 2260 raise NotImplementedError() | 2266 raise NotImplementedError() |
| 2261 | 2267 |
| 2262 def sort(self, reverse=True): | 2268 def sort(self, reverse=True): |