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How to normalize an array in NumPy?
...iving optimal performance.
import numpy as np
def normalized(a, axis=-1, order=2):
l2 = np.atleast_1d(np.linalg.norm(a, order, axis))
l2[l2==0] = 1
return a / np.expand_dims(l2, axis)
A = np.random.randn(3,3,3)
print(normalized(A,0))
print(normalized(A,1))
print(normalized(A,2))
prin...
Difference between Repository and Service Layer?
...ce layer This part operates on view models.
EDIT:
Example of flow for /Orders/ByClient/5 (we want to see order for specific client):
public class OrderController
{
private IOrderService _orderService;
public OrderController(IOrderService orderService)
{
_orderService = orde...
What's the difference between SortedList and SortedDictionary?
...--------+---------+
* Insertion is O(1) for data that are already in sort order, so that each
element is added to the end of the list (assuming no resize is required).
From an implementation perspective:
+------------+---------------+----------+------------+------------+------------------+
| ...
Parse query string in JavaScript [duplicate]
...ne query value. I think a better abstraction is to return a JS object with all the name value pairs from the query string
– Juan Mendes
Sep 4 '12 at 23:37
11
...
Algorithm to get the excel-like column name of a number
...
I have translated this PHP script to JS: gist.github.com/terox/161db6259e8ddb56dd77
– terox
Oct 5 '15 at 10:50
...
What is a mixin, and why are they useful?
...
This particular example could have been achieved via the functools.total_ordering() decorator, but the game here was to reinvent the wheel:
import functools
@functools.total_ordering
class Integer(object):
def __init__(self, i):
self.i = i
def __le__(self, other):
return s...
C++ Redefinition Header Files (winsock2.h)
...t;winsock2.h> #include <ws2tcpip.h> #include <windows.h> in order and was getting winsock2,h file not found. Included #define _WINSOCKAPI_ above all 3 includes still the same error
– Ava
Mar 8 '12 at 19:06
...
Default filter in Django admin
...
In order to achieve this and have a usable 'All' link in your sidebar (ie one that shows all rather than showing pending), you'd need to create a custom list filter, inheriting from django.contrib.admin.filters.SimpleListFilter ...
Why isn't sizeof for a struct equal to the sum of sizeof of each member?
... @YoYoYonnY that's not possible. The compiler is not allowed to reorder struct members although gcc has an experimental option to do that
– phuclv
Mar 2 '17 at 2:57
...
Tutorials and libraries for OpenGL-ES games on Android [closed]
...d create a free version of the game on the market - after which I cannot really sell my app, I can only give people an opportunity to support it. This is possible on Android because Google has virtually no restrictions on the market (which is good). On the iPhone market it might be different, becaus...