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How to mock an import
...ulate a side-effect that took some time. So I needed an object's method to sleep for a second. That would work like this:
sys.modules['foo'] = MagicMock()
sys.modules['foo.bar'] = MagicMock()
sys.modules['foo.baz'] = MagicMock()
# setup the side-effect:
from time import sleep
def sleep_one(*args): ...
How to prevent a background process from being stopped after closing SSH client in Linux
...hat every other app has done since the beginning -- double fork.
# ((exec sleep 30)&)
# grep PPid /proc/`pgrep sleep`/status
PPid: 1
# jobs
# disown
bash: disown: current: no such job
Bang! Done :-) I've used this countless times on all types of apps and many old machines. You can combine ...
File Hash 扩展：文件哈希计算和 Base64 编码文件，sha256、sha512 哈希 ·...
...概述
扩展特性
截图
函数
使用示例
基本文件哈希计算
同时计算 SHA256 和 SHA512
文件完整性验证
Base64 编码扩展
Base64 函数
B...
Colors with unix command “watch”?
...t know the flags or there isn't you can make a poor's man watch by:
while sleep <time>; do clear; <command>; done
It will have a bit of flicker (watch works "double buffered") but for some stuff it is useful enough.
You may be tempted to make a double buffered poor man's watch using ...
What does the 'static' keyword do in a class?
...s if they were instance members, e.g.
// Bad code!
Thread.currentThread().sleep(5000);
someOtherThread.sleep(5000);
That makes it look as if sleep is an instance method, but it's actually a static method - it always makes the current thread sleep. It's better practice to make this clear in the ca...
AfxGetApp->GetMainWnd() 与 AfxGetMainWnd() - C/C++ - 清泛网 - 专注C/C++及内核技术
...只不过不是主线程罢了．还有就是用API Createthread之类的函数创建的线程无法生成CWinThread对象．所以如果想使用CWinThread对象里的函数，以及一些全局函数进行操作，如上面的AfxGetMainWnd()，就必须用CWinThread对象的CreateThread函数，...
MFC OnKeyDown没反应，不响应键盘操作 - C/C++ - 清泛网 - 专注C/C++及内核技术
...键盘操作在MFC中添加键盘的消息响应，通常是通过OnKeyDown函数来完成消息的捕捉和响应。afx_msg void OnKeyDown(UINT nChar, UINT nRepCnt, U...在MFC中添加键盘的消息响应，通常是通过OnKeyDown函数来完成消息的捕捉和响应。
afx_msg void OnKeyDow...
ON_COMMAND_EX、ON_COMMAND区别 - C/C++ - 清泛网 - 专注C/C++及内核技术
...参数个数相同，含义一样。
但是扩展映射宏的消息处理函数的原型和对应的普通映射宏相比，有两个不同之处：
一是多了一个UINT类型的参数，另外就是有返回值（返回BOOL类型）。
回顾4.4.2章节，范围映射宏ON_COMMAND_RANGE的消...
error C2804:binary \'operator +\' has too many parameters - C/C++ - 清泛网 - 专注C/C++及内核技术
...方法：+操作符包括两个操作数，应该重载为普通非成员函数。
注意重载操作符的形参数目（包括成员函数的隐式 this 指针）与操作符的操作数数目相同。对称的操作符，如算术操作符、相等操作符、关系操作符和位操作符，最...
error: ‘std::ios_base::ios_base(const std::ios_base&)’ is private ...
... required here这个错误的原因大概是std::ios_base类的拷贝构造函数是私有的，从return s语句返回时缺少一个合成的构造拷贝构造函数完成流的复制。错误代...这个错误的原因大概是std::ios_base类的拷贝构造函数是私有的，从return s语句...