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Why does typeof NaN return 'number'?

...eration which return NaN: Operations with a NaN as at least one operand Indeterminate forms The divisions 0/0, ∞/∞, ∞/−∞, −∞/∞, and −∞/−∞ The multiplications 0×∞ and 0×−∞ The power 1^∞ The additions ∞ + (−∞), (−∞) + ∞ and e...
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What is the official “preferred” way to install pip and virtualenv systemwide?

... If you can install the latest Python (2.7.9 and up) Pip is now bundled with it. See: https://docs.python.org/2.7//installing/index.html If not : Update (from the release notes): Beginning with v1.5.1, pip does not require setuptools prior to running get-pip.py. Ad...
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Can “git pull --all” update all my local branches?

I often have at least 3 remote branches: master, staging and production. I have 3 local branches that track those remote branches. ...
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How to unit test a Node.js module that requires other modules and how to mock the global require fun

...a very simple api which allows resolving the module you are trying to test and pass along mocks/stubs for its required modules in one simple step. @Raynos is right that traditionally you had to resort to not very ideal solutions in order to achieve that or do bottom-up development instead Which is...
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Why is “final” not allowed in Java 8 interface methods?

...ed” is not allowed in Java 8 interface methods? The key thing to understand about default methods is that the primary design goal is interface evolution, not "turn interfaces into (mediocre) traits". While there's some overlap between the two, and we tried to be accommodating to the latter where...
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What are the default access modifiers in C#?

...ult access modifier for classes, methods, members, constructors, delegates and interfaces? 9 Answers ...
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What's the difference between Ruby's dup and clone methods?

...s often my source for answers to these questions, since it is quite clear, and a fairly compliant Ruby implementation. share | improve this answer | follow | ...
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Why doesn't java.util.Set have get(int index)?

... itself. Two of the three commonly used implementations of List (ArrayList and Vector) are random-access, but that does not make random access a property of Lists. – Michael Myers♦ Aug 5 '12 at 4:29 ...
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Sibling package imports

I've tried reading through questions about sibling imports and even the package documentation , but I've yet to find an answer. ...
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Paging in a Rest Collection

... (think CouchDB or Persevere ). The problem I'm running into is how to handle the GET operation on the collection root if the collection is large. ...