def concat(self, operand, start=0, end=0, offset=0):
        if not Gauged.map_concat(self.ptr, operand.ptr, start, end, offset):
            raise MemoryError
Pull a single field from the site_query data
dataset/ETHPy150Open chriso/gauged/gauged/structures/sparse_map.py/SparseMap.concat--crossover with--dataset/ETHPy150Open mozilla/addons-server/src/olympia/stats/views.py/site_series