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Why is there a `null` value in JavaScript?

...pt, there are two values which basically say 'I don't exist' - undefined and null . 12 Answers ...
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What's the difference between the data structure Tree and Graph?

... speaking, what's the essential difference between the data structure Tree and Graph? And how about the tree based search and Graph based search? ...
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Serving gzipped CSS and JavaScript from Amazon CloudFront via S3

I've been looking for ways of making my site load faster and one way that I'd like to explore is making greater use of Cloudfront. ...
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Build android release apk on Phonegap 3.x CLI

How can I build an android app locally using the Phonegap 3.x CLI, ready to release? I check the bin folder generated inside the platforms/android directory of the project, and only has .debug APKs. ...
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What is JNDI? What is its basic use? When is it used?

... What is JNDI ? It stands for Java Naming and Directory Interface. What is its basic use? JNDI allows distributed applications to look up services in an abstract, resource-independent way. When it is used? The most common use case is...
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Circle-Rectangle collision detection (intersection)

How can I tell whether a circle and a rectangle intersect in 2D Euclidean space? (i.e. classic 2D geometry) 25 Answers ...
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Remote debugging with Android emulator

Is it possible to write the code/compile Android application on one machine and debug it remotely on the emulator launched on another? I'm sick and tired of the emulator constantly eating half of my laptop's CPU. ...
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Is APC compatible with PHP 5.4 or PHP 5.5?

...e the replacement for APC going forward as it is included in the PHP core, and will have to be maintained for each new release. I would personally advise those who depend on APC for it's opcode caching to test their code with the upcoming built-in opcode cache, and feed back any issues encountered t...
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Why should C++ programmers minimize use of 'new'?

...on Memory leak with std::string when using std::list<std::string> , and one of the comments says this: 18 Answers ...
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How to make good reproducible pandas examples

Having spent a decent amount of time watching both the r and pandas tags on SO, the impression that I get is that pandas questions are less likely to contain reproducible data. This is something that the R community has been pretty good about encouraging, and thanks to guides like this , newc...