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How to output only captured groups with sed?
...z" | sed 's/^foo\(.*\)baz$/\1/'
will output "bar". If you use -r (-E for OS X) for extended regex, you don't need to escape the parentheses:
echo "foobarbaz" | sed -r 's/^foo(.*)baz$/\1/'
There can be up to 9 capture groups and their back references. The back references are numbered in the orde...
Best way to make Django's login_required the default
...ication, this model will work. If this isn't a one-to-one fit, you may choose to modify the middleware to suit your circumstances more closely.
What I like about this approach - besides removing the necessity of littering the codebase with @login_required decorators - is that if the authentication...
Download the Android SDK components for offline install
Is it possible to download the Android SDK components for offline install without using the SDK Manager?
The problem is I am behind a firewall which I have no control over and both sites download URLs seem to be blocked (throws a connection refused exception)
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Are there any smart cases of runtime code modification?
...ardware Software Tradeoffs for Bitmap Graphics on the Blit (1984) or this posting (2006) by Chris Lattner on Apple's use of LLVM for runtime code specialization in their OpenGL stack.
In some cases software resorts to a technique known as trampoline which involves the dynamic creation of code on the...
MFC 中CImageList的用法 - C/C++ - 清泛网 - 专注C/C++及内核技术
...立和删除图像，并能实现增加、删除、替换和拖动图像邓操作。图像列表控件提供了控制图像列表额基本方法，这些方法在Windows 95及以后版本才能实现。该控件是不可见的，通常与其他如CListBox、CComboBox、CComboBoxEx以及CTabCtrl一...
窝窝与众美联合并 新公司命名“众美窝窝” - 资讯 - 清泛网 - 专注C/C++及内核技术
...CEO徐茂栋曾透露，去年Q3窝窝改进了面向商家的窝窝电商操作系统，为餐饮行业推出“定制化”的操作后台，使商家可以一站式创建并管理自有品牌的APP、窝窝专卖店，以及第三方互联网渠道上的店铺(微信微店，支付宝服务窗，...
Confused by python file mode “w+”
...tiple parameters. r, w, or a are exclusive, but b can be added to any of those, as can +, or U... It's a combinatorial explosion.
– rmunn
Oct 3 '14 at 6:41
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YYYY-MM-DD format date in shell script
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The preferred syntax in any POSIX-compliant shell in this millennium is date=$(date) instead of date=`date`. Also, don't use uppercase for your private variables; uppercase variable names are reserved for the system.
– tripleee
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What does the '.' (dot or period) in a Go import statement do?
In the Go tutorial, and most of the Go code I've looked at, packages are imported like this:
3 Answers
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Google Tag Manager 入门指南 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...考虑Google Tag Manager 产品了，首先他完全免费，其次界面操作，权限管理等，和Google Analytics操作习惯类似，可以很快上手。
账号添加：
首先你需要注册一个新账号，用gmail邮箱即可，然后创建一个Account：
指定默认的Contain...