If I try to find the sum of a vector of floats that way, it works as
expected:
sage: vector([1,float(2),3]).sum()
-> 6.0
However, applying the same logic on a vector made of integers:
sage: vector([1,2,3]).sum()
-> Traceback (click to the left of this block for traceback)
...
AttributeError:
'sage.modules.vector_integer_dense.Vector_integer_dense'
object has no attribute 'sum'
Workaround (thanks to Dr. Drake) is to call the sum function directly
like this:
sage: sum(vector([1,2,3]))
-> 6
Browsing through the code, one can find the .sum() method being
defined for floats at the end of the file vector_double_dense.pyx,
while this method is absent in the vector_integer_dense.pyx.
Did I luckily stumbled on a rarity, or should this self.sum() method
be part of every types' definition? (where applicable). in any case,
uniformity would help (method present in every type definition /
completely removed) to prevent confusion.
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