D5415: rust: changed Graph.parents to return [Revision; 2]

[yuja (Yuya Nishihara)]

yuja added a comment.


  Queued the first two, thanks.
  
  >   This is a nice improvement. It still seems odd to me to return a list of two parents when there could be 0, 1 or 2 parents. I guess this is for performance reasons?
  
  It's a direct mapping from the revlog storage. I think `[Revision; 2]`
  is good enough at this layer as I see the Graph trait is actually an
  abstraction for storage-level objects.

REPOSITORY
  rHG Mercurial

REVISION DETAIL
  https://phab.mercurial-scm.org/D5415

To: gracinet, #hg-reviewers
Cc: yuja, durin42, kevincox, mercurial-devel