Hi Florent,
Thanks! I do not understand how to use it though. If I inherit
from sage.structure.list_clone import ClonableIntArray, ClonableElement
and replace
class LinearExtensionOfPoset(CombinatorialObject, Element):
by
class LinearExtensionOfPoset(ClonableIntArray, ClonableElement):
and put
ClonableIntArray.__init__(self, linear_extension)
ClonableElement.__init__(self, parent)
in my _init__ file, then I get a lot of error messages (whereas all tests pass
before the
change).
Do I need to replace
Element = LinearExtensionOfPoset
as well by
ClonableElement = LinearExtensionOfPoset?
Cheers,
Anne
On 2/18/12 12:43 PM, Florent Hivert wrote:
> Hi Anne,
>
>> Thanks! The only problem is that when it is not yet imported one gets the
>> same error and hence it is hard to locate:
>
> You should use "search_src":
>
> sage: search_src("ClonableInt")
> sets/finite_set_map_cy.pxd:14:from sage.structure.list_clone cimport
> ClonableIntArray
> sets/finite_set_map_cy.pxd:16:cdef class FiniteSetMap_MN(ClonableIntArray):
> [...]
> structure/list_clone.pxd:47:cdef class ClonableIntArray(ClonableElement):
> structure/list_clone.pxd:52: cpdef ClonableIntArray __copy__(self)
>
>
>>
>> sage: import_statements(ClonableIntArray)
>> ---------------------------------------------------------------------------
>> NameError Traceback (most recent call last)
>>
>> /Applications/sage-5.0.beta3/devel/sage-combinat/sage/combinat/<ipython
>> console> in <module>()
>>
>> NameError: name 'ClonableIntArray' is not defined
>
>> So what would be the advantage to use ClonableInArray over
>> CombintorialObject?
>
> 1] CombintorialObject will shortly be deprecated;
>
> 2] ClonableInArray is Cython which could potentially speedup things: eg: as I
> remember, for our computation on NDPF monoids, FiniteSetMaps are nearly 100
> time faster than the previous implementation;
>
> 3] They use the Parent/Element pattern which is required in Sage;
>
> 4] The memory footprint is much smaller.
>
> Cheers,
>
> Florent
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