#17693: mutable poset: a data structure for asymptotic expressions
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       Reporter:  dkrenn             |        Owner:
           Type:  enhancement        |       Status:  new
       Priority:  major              |    Milestone:  sage-6.5
      Component:  misc               |   Resolution:
       Keywords:  asymptotics        |    Merged in:
        Authors:  Daniel Krenn       |    Reviewers:
Report Upstream:  N/A                |  Work issues:
         Branch:  u/dkrenn/asy       |       Commit:
  /mutable-poset                     |  1c6b196bac8386f97bb6234a8442040dd52e8b2d
   Dependencies:                     |     Stopgaps:
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Comment (by dkrenn):

 Replying to [comment:15 jmantysalo]:
 > If `union()` does same thing as `disjoint_union()` in posets and in
 graphs, please change name accordingly.

 No, it does not do the same. Union takes only one instance of equal
 elements, whereas disjoint_union makes each one of the equal elements
 distinct.

 > It seems unnecessary to have `INPUT`-part at all, if the function has no
 arguments at all.

 The developer guide

     http://doc.sagemath.org/html/en/developer/coding_basics.html
 #documentation-strings

 says

     An INPUT and an OUTPUT block describing the input/output of the
 function. This is not optional.

 Therefore skipping one of these blocks seems to be against the rules (and
 hopefully helps avoiding the confusion of a missing input block).

 > Just my two cents. I would give three, if I would have more time.

 Many thanks for all your cents.

 Best, Daniel

--
Ticket URL: <http://trac.sagemath.org/ticket/17693#comment:16>
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