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Get difference between 2 dates in JavaScript? [duplicate]

... to UTC, and then calculating the difference between those two UTC dates. Now, the solution can be written as, const _MS_PER_DAY = 1000 * 60 * 60 * 24; // a and b are javascript Date objects function dateDiffInDays(a, b) { // Discard the time and time-zone information. const utc1 = Date.UTC(a...
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Define a lambda expression that raises an Exception

...ef raise_(ex): raise ex y = lambda: raise_(Exception('foobar')) But if your goal is to avoid a def, this obviously doesn't cut it. It does, however allow you to conditionally raise exceptions, e.g.: y = lambda x: 2*x if x < 10 else raise_(Exception('foobar')) Alternatively you can rai...
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Extracting .jar file with command line

... Thanks, everything is fine now! – Bobby C Dec 11 '11 at 2:31 2 ...
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What are the Dangers of Method Swizzling in Objective-C?

... calls that, but the _cmd argument isn't setFrame: like it should be. It's now my_setFrame:. The original implementation is being called with an argument it never expected it would receive. This is no good. There's a simple solution — use the alternative swizzling technique defined above. The arg...
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Handling a colon in an element ID in a CSS selector [duplicate]

... This article will tell you how to escape any character in CSS. Now, there’s even a tool for it: http://mothereff.in/css-escapes#0search%5fform%3Aexpression TL;DR All the other answers to this question are incorrect. You need to escape both the underscore (to prevent IE6 from ignoring ...
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Python - When to use file vs open

...he moment. They've had a sort of strange relationship, but file() is going now, so there's no need to worry anymore. The following is from the Python 2.6 docs. [bracket stuff] added by me. When opening a file, it’s preferable to use open() instead of invoking this [file()] constructor directl...
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What is the purpose of python's inner classes?

...es confuse me. Is there something that can't be accomplished without them? If so, what is that thing? 9 Answers ...
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Why do people say that Ruby is slow? [closed]

...e signal processing app. It's easier to see what people are talking about now after all these helpful answers. – stephenmurdoch Apr 27 '10 at 3:13 1 ...
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Python multiprocessing pool.map for multiple arguments

...ort product def merge_names(a, b): return '{} & {}'.format(a, b) if __name__ == '__main__': names = ['Brown', 'Wilson', 'Bartlett', 'Rivera', 'Molloy', 'Opie'] with multiprocessing.Pool(processes=3) as pool: results = pool.starmap(merge_names, product(names, repeat=2)) ...
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Show all Elasticsearch aggregation results/buckets and not just 10

... Note that setting size:0 is now deprecated, due to memory issues inflicted on your cluster with high-cardinality field values. github.com/elastic/elasticsearch/issues/18838. Instead, use a real, reasonable number between 1 to 2147483647. ...