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What is the official “preferred” way to install pip and virtualenv systemwide?
...install the latest Python (2.7.9 and up) Pip is now bundled with it.
See: https://docs.python.org/2.7//installing/index.html
If not :
Update (from the release notes):
Beginning with v1.5.1, pip does not require setuptools prior to running get-pip.py. Additionally, if setuptools (or distribute) ...
Is there a unique Android device ID?
... Secure.ANDROID_ID);
Also read Best practices for unique identifiers: https://developer.android.com/training/articles/user-data-ids
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Why does sun.misc.Unsafe exist, and how can it be used in the real world?
... code that contains special instructions for CAS
read more about CAS here http://en.wikipedia.org/wiki/Compare-and-swap
The sun.misc.Unsafe functionality of the host VM can be used to allocate uninitialized objects and then interpret the constructor invocation as any other method call.
One can trac...
ASP.NET web.config: configSource vs. file attributes
...ill not cause web application to restart when modifying the specified file
http://msdn.microsoft.com/en-US/library/ms228154(v=vs.100).aspx
Using the Configuration.AppSettings.Settings.Add API will result in all settings being merged back into the main .config on a Configuration.Save call.
since .NET...
How do I read the source code of shell commands?
...rt of the coreutils package.
You can find all information you need here:
http://www.gnu.org/software/coreutils/
If you want to download the latest source, you should use git:
git clone git://git.sv.gnu.org/coreutils
To install git on your Ubuntu machine, you should use apt-get (git is not inclu...
javascript node.js next()
...t to kick-off when it's done.
See, for example, the code samples here:
http://blog.mixu.net/2011/02/02/essential-node-js-patterns-and-snippets/
Let's look at the example you posted:
function loadUser(req, res, next) {
if (req.session.user_id) {
User.findById(req.session.user_id, functio...
javascript check for not null
... }
The Strict Not Version uses the "Strict Equality Comparison Algorithm" http://www.ecma-international.org/ecma-262/5.1/#sec-11.9.6. The !== has faster performance, than the != operator because the Strict Equality Comparison Algorithm doesn't typecast values.
2. Non-strict Not Version
if (val != '...
Force Screen On
... v.setKeepScreenOn(true);
setContentView(v);
}
Docs http://developer.android.com/reference/android/view/View.html#setKeepScreenOn(boolean)
2. Adding keepScreenOn to xml layout
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.andro...
How do I use WebRequest to access an SSL encrypted site using https?
...
This link will be of interest to you: http://msdn.microsoft.com/en-us/library/ds8bxk2a.aspx
For http connections, the WebRequest and WebResponse classes use SSL to communicate with web hosts that support SSL. The decision to use SSL is made by the WebRequest ...
Android代码优化小技巧 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，这样能够提升代码的效率。
代码性能优化建议
原文: http://developer.android.com/training/articles/perf-tips.html
原翻译地址：http://hukai.me/android-training-course-in-chinese/performance/performance-tips.html
通常来说，高效的代码需要满足下面两个规...