#15810: Immutable directed graphs should know that they are directed
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Reporter: SimonKing | Owner:
Type: defect | Status: needs_review
Priority: major | Milestone: sage-6.2
Component: graph theory | Resolution:
Keywords: immutable | Merged in:
directed graph | Reviewers:
Authors: Simon King | Work issues:
Report Upstream: N/A | Commit:
Branch: | 1382f4f40bea6fbf32af4f0f745aa2f645a235af
u/SimonKing/ticket/15810 | Stopgaps:
Dependencies: #15623 |
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Comment (by ncohen):
> Is the purpose of this ticket to remove the confusion between
`_directed` and `directed`? Then it needs work, as both is still in the
code.
Where ?
- There is a `Graph._directed` which cannot be renamed to .directed, for
that's an internal variable
- With this ticket there is a `CGraphBackend._directed`, and only that.
- There is a `CGraph.directed`, as before.
How simple can it get ? We only store this boolean 3 times, and probably
have as many functions that only return its value `>_<`
Nathann
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Ticket URL: <http://trac.sagemath.org/ticket/15810#comment:33>
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