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App Inventor 2 社区精华问答 · App Inventor 2 中文网
...隐藏”的非常的实用的小技巧
App Inventor 2 分享你的App：源代码(.aia)分享或编译成安卓安装包(.apk)分享
网上免登陆找素材、处理素材技巧
Save Camera Pictures with Custom Names（照相机定制个性化的文件名）
程序设计里代码块较多...
Web API 最佳入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
... + MongoDB + knockoutjs)
涉及技术
服务URI Pattern
准备工作
代码实现
什么是 Web API
官方定义如下，强调两个关键点，即可以对接各种客户端（浏览器，移动设备），构建http服务的框架。
ASP.NET Web API is a framework that makes it easy...
micro:bit 实验07 - 手机调色，点亮一颗 RGB LED · App Inventor 2 中文网
...材清单
二、接线
三、界面组件
四、分步搭代码块
第 1 步：把 P0/P1/P2 配成输出
第 2 步：一根滑动条控制一路
第 3 步：加几个预设色
五、排错表
六、下一步
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How do I daemonize an arbitrary script in unix?
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You can daemonize any executable in Unix by using nohup and the & operator:
nohup yourScript.sh script args&
The nohup command allows you to shut down your shell session without it killing your script, while the & places your script in the backgr...
get UTC time in PHP
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@sanmai: a Unix timestamp is by definition always UTC. en.wikipedia.org/wiki/Unix_time
– nikc.org
Jul 20 '15 at 8:20
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实时开发、测试和调试工具 · App Inventor 2 中文网
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实时开发、测试和调试工具
禁用代码块
折叠代码块
代码块注释
错误
对话框组件
标签组件
系统日志
Android 日志和 adb（高级）
Javascript 控制台日志（高级）
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Why do people write the #!/usr/bin/env python shebang on the first line of a Python script?
...rdcode something like #!/usr/bin/python; that's ok, but less flexible.
In Unix, an executable file that's meant to be interpreted can indicate what interpreter to use by having a #! at the start of the first line, followed by the interpreter (and any flags it may need).
If you're talking about oth...
Fastest way to tell if two files have the same contents in Unix/Linux?
I have a shell script in which I need to check whether two files contain the same data or not. I do this a for a lot of files, and in my script the diff command seems to be the performance bottleneck.
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PHP script - detect whether running under linux or Windows?
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You can check if the directory separator is / (for unix/linux/mac) or \ on windows. The constant name is DIRECTORY_SEPARATOR.
if (DIRECTORY_SEPARATOR === '/') {
// unix, linux, mac
}
if (DIRECTORY_SEPARATOR === '\\') {
// windows
}
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Using awk to remove the Byte-order mark
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In addition to converting CRLF line endings to LF, dos2unix also removes BOMs:
dos2unix *.txt
dos2unix also converts UTF-16 files with a BOM (but not UTF-16 files without a BOM) to UTF-8 without a BOM:
$ printf '\ufeffä\n'|iconv -f utf-8 -t utf-16be>bom-utf16be
$ printf '...