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What are bitwise operators?

... Wow, that makes a lot more sense now. It sounded a lot more complicated than it apparently is. Thanks. I'm not sure which to choose as the right answer as there are loads of good ones, and I can't upvote so.. thanks – click ...
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HttpClient.GetAsync(…) never returns when using await/async

...nd the controller itself is async (which doesn't block a request thread). More information: My async/await intro post, which includes a brief description of how Task awaiters use SynchronizationContext. The Async/Await FAQ, which goes into more detail on the contexts. Also see Await, and UI, and ...
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Convert seconds value to hours minutes seconds?

... You should have more luck with hours = roundThreeCalc.divide(var3600, BigDecimal.ROUND_FLOOR); myremainder = roundThreeCalc.remainder(var3600); minutes = myremainder.divide(var60, BigDecimal.ROUND_FLOOR); seconds = myremainder.remainder(var...
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Is there an equivalent of lsusb for OS X

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Get URL query string parameters

... To get a more readable output, you can wrap the print_r() statement in <pre> tags: echo '<pre>'.print_r($_SERVER, TRUE).'</pre>';. – Amal Murali Mar 21 '14 at 12:08 ...
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PHPExcel auto size column width

...s such as thousand separators. By default, this is an estimated width: a more accurate calculation method is available, based on using GD, which can also handle font style features such as bold and italic; but this is a much bigger overhead, so it is turned off by default. You can enable the more ...
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How to fix “Attempted relative import in non-package” even with __init__.py

... I'm not either of the downvoters, but I feel this could use quite a bit more detail, given the popularity of this question and answer. Noting stuff like from what directory to execute the above shell command, the fact that you need __init__.pys all the way down, and the __package__-modifying tric...
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How to use the same C++ code for Android and iOS?

...ttle. My English also has changed, it has improved a lot, so the answer is more understandable to everyone now. Please take a look at the repo so you can download and run the code I'll show below. The Answer Before I show the code, please take a lot on the following diagram. Each OS has its UI...
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What is the purpose of the word 'self'?

... or requiring declarations like C++ and Java do, or perhaps something yet more different -- but it didn't. Python's all for making things explicit, making it obvious what's what, and although it doesn't do it entirely everywhere, it does do it for instance attributes. That's why assigning to an ins...
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How do I force Postgres to use a particular index?

...The reasons are basically that it's a performance hack that tends to cause more problems later down the line as your data changes, whereas PostgreSQL's optimizer can re-evaluate the plan based on the statistics. In other words, what might be a good query plan today probably won't be a good query pla...