#7477: Matroids
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Reporter: ncohen | Owner: jkantor
Type: enhancement | Status:
needs_review
Priority: major | Milestone: sage-5.10
Component: combinatorics | Resolution:
Keywords: | Work issues:
Report Upstream: N/A | Reviewers:
Authors: Stefan van Zwam, Rudi Pendavingh | Merged in:
Dependencies: | Stopgaps:
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Comment (by ncohen):
This review will take a lifetime, but right now all I can say is that the
code of `circuits`, `cocircuits`, `noncospanning_cocircuits`, and
`nonspanning_circuits` look awfully similar.
And there are some parts of the code that are commented out, like that
{{{
+# def bitset_pickle_test(data):
+# """
+# Converts the list of integers ``data`` into a bitset, which gets
pickled.
+# """
+# cdef bitset_t bs
+# m = max(data)
+# bitset_init(bs, m+1)
+# bitset_clear(bs)
+# for i in data:
+# bitset_add(bs, i)
+# p = bitset_pickle(bs)
+# bitset_free(bs)
+# return p
}}}
Or 4 functions in the matroid catalog.
Nathann
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7477#comment:16>
Sage <http://www.sagemath.org>
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