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# distutils: language = c++
from cython.cimports.libcpp.vector import vector
@cython.cclass
class Matrix:
ncols: cython.uint
v: vector[cython.float]
def __cinit__(self, ncols: cython.uint):
self.ncols = ncols
def add_row(self):
"""Adds a row, initially zero-filled."""
self.v.resize(self.v.size() + self.ncols)
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