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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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Why do we use __init__ in Python classes?

I am having trouble understanding the Initialization of classes. 8 Answers 8 ...
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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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How can you do anything useful without mutable state?

I've been reading a lot of stuff about functional programming lately, and I can understand most of it, but the one thing I just can't wrap my head around is stateless coding. It seems to me that simplifying programming by removing mutable state is like "simplifying" a car by removing the dashboard:...
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When is it right for a constructor to throw an exception?

...hat supports one-stage construction, where the object is fully initialized and usable after construction. One-stage constructors should throw if they fail to fully initialize the object. If the object cannot be initialized, it must not be allowed to exist, so the constructor must throw. ...
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IE9 border-radius and background gradient bleeding

IE9 is apparently able to handle rounded corners by using the CSS3 standard definition of border-radius . 17 Answers ...
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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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What are the best practices for SQLite on Android?

... the best practices when executing queries on an SQLite database within an Android app? 10 Answers ...
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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 ...