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How to correctly use “section” tag in HTML5?

... or XHTML), consider applying styles directly to the element as described by Kroc Camen. If you still need an additional element for styling, use a . As Dr Mike explains, div isn’t dead, and if there’s nothing else more appropriate, it’s probably where you really want to apply your CSS. you ...
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How to avoid isset() and empty()

... gives the reader an idea of what the following code will work on and thereby also serves as a sort of self-documentation. Arrays: $defaults = array('foo' => false, 'bar' => true, 'baz' => 'default value'); $values = array_merge($defaults, $incoming_array); The same thing as above, you'...
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How to upload a file in Django? [closed]

...m what URL Django serves them. MEDIA_ROOT and MEDIA_URL are in settings.py by default but they are empty. See the first lines in Django Managing Files for details. Remember also set the database and add myapp to INSTALLED_APPS ... import os BASE_DIR = os.path.dirname(os.path.dirname(__file__)) ......
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MongoDB/NoSQL: Keeping Document Change History

...ch change I came across the Versioning module of the Mongoid driver for Ruby. I haven't used it myself, but from what I could find, it adds a version number to each document. Older versions are embedded in the document itself. The major drawback is that the entire document is duplicated on each cha...
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I want to execute shell commands from Maven's pom.xml

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Conveniently Declaring Compile-Time Strings in C++

...s a literal string and compiles the contents to a function. See the answer by dyp. A very complete-looking library is metaparse. Essentially, you can define any mapping from literal strings to types, and implement it with this kind of technology. – Aaron McDaid ...
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Throw HttpResponseException or return Request.CreateErrorResponse?

...ge/add status codes? add tracking identifiers? include stack traces? log? By avoiding HttpResponseException the 'exceptional case' handling is made uniform and can be handled as part of the exposed pipeline! For example one can turn a 'NotFound' into a 404 and an 'ArgumentException' into a 400 and ...
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Why not inherit from List?

... the team an object of its own that happens to contain a list of players. By extending List you are limiting yourself in a number of ways: You cannot restrict access (for example, stopping people changing the roster). You get all the List methods whether you need/want them all or not. What happen...
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Large-scale design in Haskell? [closed]

...nsure no unnecessary memory use. Purity Reduce complexity dramatically by removing state. Purely functional code scales, because it is compositional. All you need is the type to determine how to use some code -- it won't mysteriously break when you change some other part of the program. Use lots...
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Flask vs webapp2 for Google App Engine

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