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mvmul_list_comprehension_with_dot.py

 1 # The authors of this work have released all rights to it and placed it
 2 # in the public domain under the Creative Commons CC0 1.0 waiver
 3 # (http://creativecommons.org/publicdomain/zero/1.0/).
 4 # 
 5 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 6 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 7 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 8 # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 9 # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
10 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
11 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
12 # 
13 # Retrieved from: http://en.literateprograms.org/Matrix_multiplication_(Python)?oldid=19494
14 
15 def mvmul(matrix, vector):
16     return [dot(m, vector) for m in matrix]


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mvmul_higher_order.py

 1 # The authors of this work have released all rights to it and placed it
 2 # in the public domain under the Creative Commons CC0 1.0 waiver
 3 # (http://creativecommons.org/publicdomain/zero/1.0/).
 4 # 
 5 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 6 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 7 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 8 # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 9 # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
10 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
11 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
12 # 
13 # Retrieved from: http://en.literateprograms.org/Matrix_multiplication_(Python)?oldid=19494
14 
15 def mvmul(matrix, vector):
16     return map(lambda m: sum(map(lambda u, v: u * v, m, vector)), matrix)


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mvmul_recursion_with_dot.py

 1 # The authors of this work have released all rights to it and placed it
 2 # in the public domain under the Creative Commons CC0 1.0 waiver
 3 # (http://creativecommons.org/publicdomain/zero/1.0/).
 4 # 
 5 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 6 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 7 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 8 # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 9 # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
10 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
11 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
12 # 
13 # Retrieved from: http://en.literateprograms.org/Matrix_multiplication_(Python)?oldid=19494
14 
15 def mvmul(matrix, vector):
16     if matrix:
17         return [dot(matrix[0], vector)] +\
18             mvmul(matrix[1:], vector)
19     else:
20         return []
21 


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mvmul_higher_order_with_dot.py

 1 # The authors of this work have released all rights to it and placed it
 2 # in the public domain under the Creative Commons CC0 1.0 waiver
 3 # (http://creativecommons.org/publicdomain/zero/1.0/).
 4 # 
 5 # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 6 # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
 7 # MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
 8 # IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
 9 # CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
10 # TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
11 # SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
12 # 
13 # Retrieved from: http://en.literateprograms.org/Matrix_multiplication_(Python)?oldid=19494
14 
15 def mvmul(matrix, vector):
16     return map(lambda m: dot(m, vector), matrix)


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