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One DbContext per web request… why?

I have been reading a lot of articles explaining how to set up Entity Framework's DbContext so that only one is created and used per HTTP web request using various DI frameworks. ...
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What is the simplest and most robust way to get the user's current location on Android?

The LocationManager API on Android seems like it's a bit of a pain to use for an application that only needs an occasional and rough approximation of the user's location. ...
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Why is it bad practice to call System.gc()?

After answering a question about how to force-free objects in Java (the guy was clearing a 1.5GB HashMap) with System.gc() , I was told it's bad practice to call System.gc() manually, but the comments were not entirely convincing. In addition, no one seemed to dare to upvote, nor downvote my ...
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Are Exceptions in C++ really slow

I was watching Systematic Error Handling in C++—Andrei Alexandrescu he claims that Exceptions in C++ are very very slow. ...
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What is polymorphism, what is it for, and how is it used?

What is polymorphism, what is it for, and how is it used? 28 Answers 28 ...
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Is it possible to implement dynamic getters/setters in JavaScript?

I am aware of how to create getters and setters for properties whose names one already knows, by doing something like this: ...
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When to use LinkedList over ArrayList in Java?

I've always been one to simply use: 33 Answers 33 ...
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Why are floating point numbers inaccurate?

Why do some numbers lose accuracy when stored as floating point numbers? 6 Answers 6 ...
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Difference between timestamps with/without time zone in PostgreSQL

Are timestamp values stored differently in PostgreSQL when the data type is WITH TIME ZONE versus WITHOUT TIME ZONE ? Can the differences be illustrated with simple test cases? ...
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WebView and HTML5

I'm piecing together a cheapo app that amongst other things "frames" some of our websites... Pretty simple with the WebViewClient . until I hit the video. ...