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How do I clear the terminal screen in Haskell?
...a terminal that understands ANSI escape sequences (I believe every term in Unix/Linux systems) you can do it simply with:
clear = putStr "\ESC[2J"
The 2 clears the entire screen. You can use 0 or 1 respectively if you want to clear from the cursor to end of screen or from cursor to the beginning ...
Are table names in MySQL case sensitive?
...are not case sensitive in Windows, and case sensitive in most varieties of Unix.
In MySQL, databases correspond to directories within the data
directory. Each table within a database corresponds to at least one
file within the database directory. Consequently, the case sensitivity of the
u...
What does -D_XOPEN_SOURCE do/mean?
...s.
This will give you some extra functionality that exists on most recent UNIX/BSD/Linux systems, but probably doesn't exist on other systems such as Windows.
The numbers refer to different versions of the standard.
500 - X/Open 5, incorporating POSIX 1995
600 - X/Open 6, incorporating POSIX 200...
导航条使用指导 · App Inventor 2 中文网
...上方（改名 标签_标题，用来看选中结果）；
搭下面的代码块：
when Screen1.Initialize() {
导航条1.SetItems(list("", "", "", ""), list("首页", "分类", "购物车", "我的"))
}
when 导航条1.ItemSelected(索引) {
标签_标题.Text = join("当前选中：第 ...
Why should text files end with a newline?
... hard advantage to this guideline when working on a terminal emulator: All Unix tools expect this convention and work with it. For instance, when concatenating files with cat, a file terminated by newline will have a different effect than one without:
$ more a.txt
foo
$ more b.txt
bar$ more c.txt
b...
VideoRecorder 拓展：前台预览录制 + 后台无预览录制，支持分辨率、码率设...
...
在布局中显示摄像头实时画面，录制视频。
参考代码块：
BackgroundVideoRecorder — 后台模式（无预览）
无预览画面，应用最小化后录制继续。适合后台监控、静默录制等场景。
参考代码块：
...
Dokan虚拟磁盘开发实战 - 操作系统(内核) - 清泛网 - 专注C/C++及内核技术
...在这里就不细说了。
Dokan客户端则由Delphi开发，其参考代码来自网络上的Delphi例子，比如Mirror Driver。
本篇文章主要是Dokan开发过程的一些总结，所以不会对Dokan本身做介绍，与Dokan有关的资料及代码，请到google里搜索，或到Dokan...
Including all the jars in a directory within the Java classpath
...Use *, not *.jar
Windows
java -cp "Test.jar;lib/*" my.package.MainClass
Unix
java -cp "Test.jar:lib/*" my.package.MainClass
This is similar to Windows, but uses : instead of ;. If you cannot use wildcards, bash allows the following syntax (where lib is the directory containing all the Java arch...
Powershell equivalent of bash ampersand (&) for forking/running background processes
... Glad I found this answer. I was looking for the equivalent of a Unix fork-twice mechanism. To me it seems that something started with Start-Job will be killed when the PS shell exits. In contrast it seems that something started with Start-Process will continue to run after the PS shell ex...
Difference between Python datetime vs time modules
...
the time module is principally for working with unix time stamps; expressed as a floating point number taken to be seconds since the unix epoch. the datetime module can support many of the same operations, but provides a more object oriented set of types, and also has som...