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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 != '...
How do I change Bootstrap 3 column order on mobile layout?
...st">
main
</div>
</div>
Bootstrap 4(alpha 6): http://www.codeply.com/go/bBMOsvtJhD
Bootstrap 4.1: https://www.codeply.com/go/e0v77yGtcr
Original 3.x Answer
For the original question based on Bootstrap 3, the solution was to use push-pull for the larger widths, and th...
Anatomy of a “Memory Leak”
...
If you need to diagnose a memory leak in .NET, check these links:
http://msdn.microsoft.com/en-us/magazine/cc163833.aspx
http://msdn.microsoft.com/en-us/magazine/cc164138.aspx
Those articles describe how to create a memory dump of your process and how to analyze it so that you can first d...
What is the difference between 0.0.0.0, 127.0.0.1 and localhost?
...em server will bind to this address by default. I can still visit it via http://localhost:port . But for Jekyll , it seems that the default setting (e.g. 0.0.0.0:4000) requires Internet access. I cannot run Jekyll server without Internet. Is it a small bug?
...
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...
windows版 svn 服务器搭建及总结 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，解压，一路next 即可。
subversion服务端官方下载地址：http://subversion.apache.org/packages.html
tortoisesvn客户端官方下载地址：http://tortoisesvn.net/downloads.html
我的安装路径为：
2.为svn创建版本存储仓库repository。
可以使用svnadmin 命...
How to create a directory using Ansible
...le:
path: /src/www
state: directory
You can see other options at http://docs.ansible.com/file_module.html
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Vertical (rotated) text in HTML table
...ximus nulla, et pharetra dolor ex non dolor.</div>
Taken from http://css3please.com/
As of 2017, the aforementioned site has simplified the rule set to drop legacy Internet Explorer filter and rely more in the now standard transform property:
.box_rotate {
-webkit-transform: ro...
Change Placeholder Text using jQuery
I am using a jQuery placeholder plugin(https://github.com/danielstocks/jQuery-Placeholder). I need to change the placeholder text with the change in dropdown menu. But it is not changing. Here is the code:
...
How to change the background color of the options menu?
...tions menu?
Android: customize application's menu (e.g background color)
http://www.macadamian.com/blog/post/android_-_theming_the_unthemable/
Android MenuItem Toggle Button
Is it possible to make the Android options menu background non-translucent?
http://www.codeproject.com/KB/android/Android...