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@rafbarr
rafbarr / _feature_hasher.pyx
Created October 2, 2016 09:58
Very efficient implementation of feature hashing for Python.
# distutils: language=c++
import collections
import operator
from cpython.bytes cimport PyBytes_AS_STRING, PyBytes_GET_SIZE
import cython
import numpy as np
import pandas as pd
from libc.stdint cimport uint8_t, uint32_t