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# tag: cpp
from libcpp.vector cimport vector
__doc__ = u"""
>>> test_lvalue_ref_assignment()
"""
ctypedef double* dp
ctypedef double** dpp
cdef void foo(vector[dpp] &bar, vector[vector[dp]] &baz) nogil:
bar[0] = &baz[0][0]
def test_lvalue_ref_assignment():
cdef vector[dpp] bar
cdef vector[vector[dp]] baz
cdef vector[double] data = [0.0]
cdef dp bongle = &data[0]
bar.resize(1)
bar[0] = NULL
baz.resize(1)
baz[0].resize(1)
baz[0][0] = bongle
foo(bar, baz)
assert bar[0] == &baz[0][0]
assert bar[0][0] == bongle
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