Robert Kern wrote:
> Neal Becker wrote:
>> It seems that PyArray_FromAny does not accept a generator?
>>
>> Seems like this would be useful.
>
> It's difficult to do all the magical interpretation that PyArray_FromAny()
> does with a iterator of unknown length. In Python, we have fromiter()
> which will consume an iterator to make (only) a rank-1 array and thus
> sidestep a big chunk of the magical interpretation.
>
I have previously created a wrapper for python around boost::ublas vector.
Basically it does (in pseudocode):
vector_from_object(obj):
if (obj is a vector):
return a copy
elif (obj has __len__):
return vector_from_sequence
elif (obj has __iter__):
return vector_from_iter
vector_from_iter(iter):
copy_iter_to_new_temp_container (in this case, we use std::vector with
push_back)
return new vector from temp container
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