what is the fastest way of checking the number of elements in OOBtree.
Execution time of
len( OOBtree.keys() ) and len(OOBtree)
is exactly the same. For big data sets execution time is unacceptable. I
found out that in the implementation of OOBtree (written in C) there is
a variable called 'len', which seems to contain the length of the tree.
Is it possible to access that variable from the python code without
modifying the source?
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