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  • Committer: Robert Collins
  • Date: 2007-10-19 03:45:02 UTC
  • mto: This revision was merged to the branch mainline in revision 2917.
  • Revision ID: robertc@robertcollins.net-20071019034502-55zg0l4gvmucd1uw
Make the contract of HeadsCache.heads() more clear.

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bzrlib/graph.py
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    def heads(self, keys):
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        """Return the heads of keys.
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        This matches the API of Graph.heads(), specifically the return value is
 
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        a set which can be mutated, and ordering of the input is not preserved
 
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        in the output.
 
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        :see also: Graph.heads.
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        :param keys: The keys to calculate heads for.
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        :return: A set containing the heads, which may be mutated without