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Difference between setUp() and setUpBeforeClass()

When unit testing with JUnit, there are two similar methods, setUp() and setUpBeforeClass() . What is the difference between these methods? Also, what is the difference between tearDown() and tearDownAfterClass() ? ...
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Which HTML5 tag should I use to mark up an author’s name?

... Both rel="author" and <address> are designed for this exact purpose. Both are supported in HTML5. The spec tells us that rel="author" can be used on <link> <a>, and <area> elements. Google also recommends its usage. Com...
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How to take column-slices of dataframe in pandas

...achine learning data from a CSV file. The first 2 columns are observations and the remaining columns are features. 10 Answe...
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Setting variable to NULL after free

...dangling pointer is accessed after it is freed, you may read or overwrite random memory. If a null pointer is accessed, you get an immediate crash on most systems, telling you right away what the error is. For local variables, it may be a little bit pointless if it is "obvious" that the pointer isn...
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How can I find the first occurrence of a sub-string in a python string?

... @Regressor: look into regex and word boundaries. – mechanical_meat Apr 12 at 23:29 add a comment  |  ...
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Convert XML to JSON (and back) using Javascript

How would you convert from XML to JSON and then back to XML? 12 Answers 12 ...
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How to add reference to System.Web.Optimization for MVC-3-converted-to-4 app

...e Microsoft.Web.Optimization package is now obsolete. With ASP.NET (MVC) 4 and higher you should install the Microsoft ASP.NET Web Optimization Framework: Install the package from nuget: Install-Package Microsoft.AspNet.Web.Optimization Create and configure bundle(s) in App_Start\BundleConfig.cs...
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Difficulty with ng-model, ng-repeat, and inputs

I am trying to allow the user to edit a list of items by using ngRepeat and ngModel . ( See this fiddle .) However, both approaches I've tried lead to bizarre behavior: one doesn't update the model, and the other blurs the form on each keydown. ...
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Fixed position but relative to container

...on. It is now possible to center content of an dynamic size (horizontally and vertically) with the help of the magic of CSS3 transform. The same principle applies, but instead of using margin to offset your container, you can use translateX(-50%). This doesn't work with the above margin trick bec...
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Faster s3 bucket duplication

I have been trying to find a better command line tool for duplicating buckets than s3cmd . s3cmd can duplicate buckets without having to download and upload each file. The command I normally run to duplicate buckets using s3cmd is: ...