# C++ unordered map for Python
### Tested against Windows 10 / Python 3.11 / Anaconda / C++ 20 - MSVC
### pip install cppumap
### Cython and a C++ compiler must be installed!
```PY
from cppumap.um_int__int import Um_int_int
import numpy as np
di = {k: k + 1 for k in range(100)}
di2 = {k: k - 100 for k in range(100, 200)}
stufftodeletelater = list(di2.items())
di.update(di2)
m = Um_int_int(di)
print(m)
stufftodelete = list(range(20))
del m[stufftodelete]
print(m)
values2delete = list(range(90, 100))
m.del_by_values(values2delete)
print(m)
m.del_by_values(79)
print(m)
m.del_by_key_and_value(stufftodeletelater)
print(m)
a = np.arange(100, dtype=np.int32)
b = np.arange(100, dtype=np.int32)
m.set_np(a, b)
print(m)
tuplelist = [(k, k + 1) for k in range(300, 400)]
m.set_tuple_list(tuplelist)
print(m)
print(m.getitems(a))
print(m.sorted())
for k, v in m.items():
print(k, v)
for k in m:
print(k)
print(m.keys())
print(m.values())
di3 = {k: k - 100 for k in range(1000, 1200)}
m.update(di3)
print(m)
cop = m.copy()
print(cop)
m.append(100000 - 1, 1)
print(m)
my_results_apply_as_c_function = []
my_results_apply_as_c_pyfunction = []
my_results_apply_as_c_function_nogil = []
def apply_as_c_function(a):
my_results_apply_as_c_function.append(a)
def apply_as_c_pyfunction(a):
my_results_apply_as_c_pyfunction.append(a)
def apply_function(a, b):
return b, a
def apply_as_c_function_nogil(a):
my_results_apply_as_c_function_nogil.append(a) # might not release the gil
results1 = m.apply_function(apply_function)
print(results1)
m.apply_as_c_function(apply_as_c_function)
n2 = (
np.array([q for q in my_results_apply_as_c_function if q is not None], dtype=np.uint64)
.view(np.int32)
.reshape((-1, 2))
)
m.apply_as_c_pyfunction(apply_as_c_pyfunction)
n1 = (
np.array(
[q for q in my_results_apply_as_c_pyfunction if q is not None], dtype=np.uint64
)
.view(np.int32)
.reshape((-1, 2))
)
m.apply_as_c_function_nogil(apply_as_c_function_nogil)
n3 = (
np.array(
[q for q in my_results_apply_as_c_function_nogil if q is not None],
dtype=np.uint64,
)
.view(np.int32)
.reshape((-1, 2))
)
m.pop(9999)
```
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"description": "\r\n# C++ unordered map for Python\r\n\r\n### Tested against Windows 10 / Python 3.11 / Anaconda / C++ 20 - MSVC\r\n\r\n### pip install cppumap\r\n\r\n### Cython and a C++ compiler must be installed!\r\n\r\n```PY\r\nfrom cppumap.um_int__int import Um_int_int\r\nimport numpy as np\r\n\r\ndi = {k: k + 1 for k in range(100)}\r\ndi2 = {k: k - 100 for k in range(100, 200)}\r\nstufftodeletelater = list(di2.items())\r\ndi.update(di2)\r\nm = Um_int_int(di)\r\nprint(m)\r\nstufftodelete = list(range(20))\r\ndel m[stufftodelete]\r\nprint(m)\r\nvalues2delete = list(range(90, 100))\r\nm.del_by_values(values2delete)\r\nprint(m)\r\nm.del_by_values(79)\r\nprint(m)\r\nm.del_by_key_and_value(stufftodeletelater)\r\nprint(m)\r\na = np.arange(100, dtype=np.int32)\r\nb = np.arange(100, dtype=np.int32)\r\nm.set_np(a, b)\r\nprint(m)\r\ntuplelist = [(k, k + 1) for k in range(300, 400)]\r\nm.set_tuple_list(tuplelist)\r\nprint(m)\r\nprint(m.getitems(a))\r\nprint(m.sorted())\r\nfor k, v in m.items():\r\n print(k, v)\r\nfor k in m:\r\n print(k)\r\nprint(m.keys())\r\nprint(m.values())\r\ndi3 = {k: k - 100 for k in range(1000, 1200)}\r\nm.update(di3)\r\nprint(m)\r\ncop = m.copy()\r\nprint(cop)\r\nm.append(100000 - 1, 1)\r\nprint(m)\r\n\r\nmy_results_apply_as_c_function = []\r\nmy_results_apply_as_c_pyfunction = []\r\nmy_results_apply_as_c_function_nogil = []\r\n\r\n\r\n\r\ndef apply_as_c_function(a):\r\n my_results_apply_as_c_function.append(a)\r\n\r\n\r\ndef apply_as_c_pyfunction(a):\r\n my_results_apply_as_c_pyfunction.append(a)\r\n\r\n\r\ndef apply_function(a, b):\r\n return b, a\r\n\r\n\r\ndef apply_as_c_function_nogil(a):\r\n my_results_apply_as_c_function_nogil.append(a) # might not release the gil\r\n\r\n\r\nresults1 = m.apply_function(apply_function)\r\nprint(results1)\r\nm.apply_as_c_function(apply_as_c_function)\r\nn2 = (\r\n np.array([q for q in my_results_apply_as_c_function if q is not None], dtype=np.uint64)\r\n .view(np.int32)\r\n .reshape((-1, 2))\r\n)\r\nm.apply_as_c_pyfunction(apply_as_c_pyfunction)\r\n\r\nn1 = (\r\n np.array(\r\n [q for q in my_results_apply_as_c_pyfunction if q is not None], dtype=np.uint64\r\n )\r\n .view(np.int32)\r\n .reshape((-1, 2))\r\n)\r\n\r\nm.apply_as_c_function_nogil(apply_as_c_function_nogil)\r\nn3 = (\r\n np.array(\r\n [q for q in my_results_apply_as_c_function_nogil if q is not None],\r\n dtype=np.uint64,\r\n )\r\n .view(np.int32)\r\n .reshape((-1, 2))\r\n)\r\nm.pop(9999)\r\n\r\n\r\n```\r\n",
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