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Two versions of python on linux. how to make 2.7 the default
...stall the python as an alternate version.
e.g.
wget http://www.python.org/ftp/python/2.7.3/Python-2.7.3.tar.bz2
tar xf Python-2.7.3.tar.bz2
cd Python-2.7.3
./configure --prefix=/usr/local/
make && make altinstall
Now by doing this the existing scripts like yum still work with /usr/bin/py...
HTTP Basic Authentication credentials passed in URL and encryption
...other protocols. For example, you can still include user information in an FTP URL after you install the 832894 security update.
– Luke
Feb 21 '13 at 18:30
...
GestureDetect 扩展：手势检测扩展，识别滑动、点击和长按手势 · App Inventor 2 中文网
...tector
版本：1
发布日期：2020年11月28日
作者：AryanGupta
文件大小：10.5 KB
下载链接
扩展文件：
aryan.gupta.GesturesDetector.aix
demo:
DetectGesture.aia
功能概述
扩展特性
多种手...
Vim: Creating parent directories on save
...t;")!~#'^\w\+:/' will prevent vim from creating directories for files like ftp://* and !isdirectory will prevent expensive mkdir call.
Update: sligtly better solution that also checks for non-empty buftype and uses mkdir():
function s:MkNonExDir(file, buf)
if empty(getbufvar(a:buf, '&bufty...
How to show a confirm message before delete?
...
@CiroSantilli巴拿馬文件六四事件法轮功 It's already the case thanks to the event.preventDefault() function. You can replace the hash char with a url, it won't be triggered. But, if JavaScript is disabled the link will work as expected.
...
MFC OnEraseBkgnd浅析 - C/C++ - 清泛网 - 专注C/C++及内核技术
...工重载
在要重载的类（通常为CView的子类）声明部分(.h文件)添加虚函数的声明：
virtual BOOL OnEraseBkgnd(CDC* pDC);
注意添加在//{{AFX_VIRTUAL(CMyView)和//}}AFX_VIRTUAL之间。
在类的定义文件(.cpp)中的MESSAFE_MAP部分，//{{AFX_MSG_MAP(CMyView)和 //...
Linux 进程卡住了怎么办？ - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...程来模拟一下（因为 JuiceFS 客户端基于 FUSE，是用户态的文件系统，比较容易模拟 I/O 故障）。
先将 JuiceFS 挂载到前台（在 ./juicefs mount 命令中加一个 -f 参数），然后用 Cltr+Z 把这个进程停掉，这时候用 ls /jfs 去访问挂载点，会...
SimpleTest vs PHPunit
...t. The times where php code was developed on a shared hosting system using ftp sync are dead and gone (fingers crossed) and no, even small, project requires a running web server (at most the one php ships out of the box). UNIT Testing through a browser and not the cli or an IDE is just such a rare u...
ImageUtil 扩展：图像工具扩展，提供图像处理和变换功能 · App Inventor 2 中文网
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从指定路径创建图像。
路径：文本类型，图像文件路径
返回值：组件类型，创建的图像组件
HFlip 水平翻转(组件)
水平翻转图像。
组件：组件类型，要翻转的图像组件
VFlip 垂直翻...
How do SO_REUSEADDR and SO_REUSEPORT differ?
... is still possible as long as A != B holds true. E.g. socketA belongs to a FTP server program and is bound to 192.168.0.1:21 and socketB belongs to another FTP server program and is bound to 10.0.0.1:21, both bindings will succeed. Keep in mind, though, that a socket may be locally bound to "any add...