Method bucket_size

libCacheSim/dataStructure/sparsepp/spp.h:2642–2645

These are tr1 methods. Their idea of 'bucket' doesn't map well to what we do. We just say every bucket has 0 or 1 items in it.

    // These are tr1 methods.  Their idea of 'bucket' doesn't map well to
    // what we do.  We just say every bucket has 0 or 1 items in it.
    size_type bucket_size(size_type i) const
    {
        return (size_type)(begin(i) == end(i) ? 0 : 1);
    }

private:
    // Because of the above, size_type(-1) is never legal; use it for errors