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Facebook database design?

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What is a reasonable code coverage % for unit tests (and why)? [closed]

...master laughed so hard and loud that his belly, evidence that he drank more than just green tea, flopped up and down. “The third programmer wants only simple answers – even when there are no simple answers … and then does not follow them anyway.” The young apprentice and ...
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How can one display images side by side in a GitHub README.md?

... This solution is better if you want to put more images on the same line on github. I managed to put 4 on the same line with this solution but only 3 with wigging's solution. – vinzee Aug 4 '17 at 17:21 ...
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How to define a two-dimensional array?

... initialisation to some value is almost always what you want - and this is more often than not 0. range yields an iterable collection - xrange returns a generator. My point was that ademar "corrected" something that was actually more generally correct and efficient than his correction. ...
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How do I call some blocking method with a timeout in Java?

...onds or any unit available as a constant in TimeUnit. See the JavaDoc for more detail. share | improve this answer | follow | ...
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Best way to structure a tkinter application? [closed]

...r class that calls the GUI is a good idea, in my experience. It offers you more flexibility if both the Tk and Frame objects are attributes of a class which doesn't inherit from anything. This way you can access the Tk and Frame objects more easily (and less ambiguously), and destroying one won't de...
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Command substitution: backticks or dollar sign / paren enclosed? [duplicate]

...r sign and parentheses, is a newer POSIX form, which means it's probably a more standard way of doing it. In turn, I'd think that that means it's more likely to work correctly with different shells and with different *nix implementations. Another reason given for preferring the first (POSIX) form i...
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What is the Python equivalent of static variables inside a function?

... as there's no way the decorator will not be called and it is semantically more obvious what it does (@static_var("counter", 0) is easier on & makes more sense to my eyes than if "counter" not in foo.__dict__: foo.counter = 0, especially as in the latter you have to use the function name (twice)...
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std::function and std::bind: what are they, and when should they be used?

.... You can use std::bind to get g: auto g = bind(f, _1, 4, _2); This is more concise than actually writing a functor class to do it. There are further examples in the article you link to. You generally use it when you need to pass a functor to some algorithm. You have a function or functor that ...
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How to check if a variable is null or empty string or all whitespace in JavaScript?

... A non-jQuery solution that more closely mimics IsNullOrWhiteSpace, but to detect null, empty or all-spaces only: function isEmptyOrSpaces(str){ return str === null || str.match(/^ *$/) !== null; } ...then: var addr = ' '; if(isEmptyOrSpaces(a...