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Unit testing private methods in C#
... are an intrinsic way to not repeat yourself (en.wikipedia.org/wiki/Don%27t_repeat_yourself). The idea behind black box programming and encapsulation is to hide technical details from the subscriber. So it is indeed necessary to have non-trivial private methods and properties in your code. And if it...
surface plots in matplotlib
...a surface.
Here's a smooth surface example:
import numpy as np
from mpl_toolkits.mplot3d import Axes3D
# Axes3D import has side effects, it enables using projection='3d' in add_subplot
import matplotlib.pyplot as plt
import random
def fun(x, y):
return x**2 + y
fig = plt.figure()
ax = fi...
Python 3 turn range to a list
...
You can just construct a list from the range object:
my_list = list(range(1, 1001))
This is how you do it with generators in python2.x as well. Typically speaking, you probably don't need a list though since you can come by the value of my_list[i] more efficiently (i + 1), and...
What is a memory fence?
...annot cache the variable value. The Linux kernel uses a gcc extension (asm __volatile__("": : :"memory")) to create a full compiler optimization barrier.
– CesarB
Nov 13 '08 at 10:36
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CreateWindow()动态创建一个EditBox - C/C++ - 清泛网 - 专注C/C++及内核技术
...建一个EditBox：在OnInitDialog()函数中： 创建EditBox HWND m_wndEdit = CreateWindow(_T("EDI...在Win32代码或MFC代码中动态创建一个EditBox：
在OnInitDialog()函数中：
// 创建EditBox
HWND m_wndEdit = CreateWindow(_T("EDIT"), 0, WS_CHILD | WS_VISIB...
Pretty-print an entire Pandas Series / DataFrame
I work with Series and DataFrames on the terminal a lot. The default __repr__ for a Series returns a reduced sample, with some head and tail values, but the rest missing.
...
Check if all elements in a list are identical
...for very large arrays, a native solution which optimizes away calls to obj.__eq__ when lhs is rhs, and out-of-order optimizations to allow short circuiting sorted lists more quickly.
– Glenn Maynard
Oct 2 '10 at 8:31
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Find most frequent value in SQL column
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SELECT `column`,
COUNT(`column`) AS `value_occurrence`
FROM `my_table`
GROUP BY `column`
ORDER BY `value_occurrence` DESC
LIMIT 1;
Replace column and my_table. Increase 1 if you want to see the N most common values of the column.
...
Rails: confused about syntax for passing locals to partials
...s. However, in that subsequent call, it actually assigns :locals => your_locals_argument, which in this case is the entire :locals => {locals hash}, instead of just {locals hash}; i.e. you end up with :locals => {:locals => {locals hash}}, rather than :locals => {locals hash}.
So my ...
Fast Linux File Count for a large number of files
...lly, the system shouldn't allow any path name that is longer than than PATH_MAX. If there are concerns, I can fix that, but it's just more code that needs to be explained to someone learning to write C. This program is intended to be an example of how to dive into subdirectories recursively.
#inclu...