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Bash empty array expansion with `set -u`
I'm writing a bash script which has set -u , and I have a problem with empty array expansion: bash appears to treat an empty array as an unset variable during expansion:
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ATL正则表达式库使用 - C/C++ - 清泛网 - 专注C/C++及内核技术
...明、严格的测试以及微软官方的 技术支持。另外在用ATL开发COM组件的时候，更可以方便地利用正则库的巨大威力。
由于本人学识所限，文章内容错在所难免，如有批评指正之词，请mail ：firingme@sina.com
ATL 正则表达式
ContinuousSpeech 连续语音识别扩展：持续语音识别无需重复启动 · App Inventor 2 中文网
...tor 2 中文网 MIT同步更新的中文本土化 积木式在线App开发平台！ © 2023 - document.write(new Date().getFullYear()); 跟着学（上海）教育科技有限公司 版权所有，未经书面许可，不得转载或使用 《隐私政策...
Make .gitignore ignore everything except a few files
...ns sources.
# Ignore everything
*
# But not these files...
!.gitignore
!script.pl
!template.latex
# etc...
# ...even if they are in subdirectories
!*/
# if the files to be tracked are in subdirectories
!*/a/b/file1.txt
!*/a/b/c/*
...
Should I be using object literals or constructor functions?
...c: "a public variable"
thisIsAlsoPublic: function () {
alert(that.thisIsPublic);
}
};
var secret = "this is a private variable"
function secretFunction() { // private method
secret += "!"; // can manipulate private variables
that.thisIsPublic...
javac not working in windows command prompt
... the solutions here: http://techdem.centerkey.com/2009/05/javahome-command-script.html
These are much more robust to change -- like when you upgrade the JDK or JRE, since there is no hard coded path.
The quick solution (if you don't want to read the blog) is
C:\>for /d %i in ("\Program Files\J...
HTML: Include, or exclude, optional closing tags?
...
You don't need </head><body> unless you have DOM-manipulating scripts that actually search <head> (then it's better to close it explicitly, because rules for implied end of <head> could surprise you).
Nested lists are actually better off without </li>, because then it...
Camera 扩展：相机拍照和录像，程序控制拍照、自动拍照实现，而无需点击系...
...tor 2 中文网 MIT同步更新的中文本土化 积木式在线App开发平台！ © 2023 - document.write(new Date().getFullYear()); 跟着学（上海）教育科技有限公司 版权所有，未经书面许可，不得转载或使用 《隐私政策...
How to merge two arrays in JavaScript and de-duplicate items
I have two JavaScript arrays:
76 Answers
76
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创业 比“直男癌”更可怕的是“技术癌” - 资讯 - 清泛网 - 专注C/C++及内核技术
...往发生在高智商人群中。因为高科技总是显得高大上，让开发者和使用者更有成就感和逼格感，对创业者、投资人乃至于用户都有比较强的迷惑性，却往往让人忘记了一个至关重要的原则：创业项目中，技术只是手段，而不是目...