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What exactly is Python's file.flush() doing?

...is a good thing, you should make both calls as instructed. Addendum in 2018. Note that disks with cache mechanisms is now much more common than back in 2013, so now there are even more levels of caching and buffers involved. I assume these buffers will be handled by the sync/flush calls as well,...
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Sorting a tab delimited file

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Xcode stops working after set “xcode-select -switch”

... JimJim 67.4k1313 gold badges9595 silver badges103103 bronze badges 3 ...
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How do negative margins in CSS work and why is (margin-top:-5 != margin-bottom:5)?

...e element, so why do you have to set margin-top:-8px; and not margin-top:-50%;? Well, vertical centering in CSS is harder than it should be. When setting even top or bottom margins in %, the value is calculated as a percentage always relative to the width of the containing block. This is rather a c...
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Foreign key constraints: When to use ON UPDATE and ON DELETE

... 490 Do not hesitate to put constraints on the database. You'll be sure to have a consistent database...
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Why does the PHP json_encode function convert UTF-8 strings to hexadecimal entities?

... Since PHP/5.4.0, there is an option called JSON_UNESCAPED_UNICODE. Check it out: https://php.net/function.json-encode Therefore you should try: json_encode( $text, JSON_UNESCAPED_UNICODE ); ...
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Caveats of select/poll vs. epoll reactors in Twisted

... 190 For very small numbers of sockets (varies depending on your hardware, of course, but we're talki...
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See what has been installed via MacPorts

... | edited Jul 30 '17 at 20:48 nbro 10.9k1717 gold badges7676 silver badges140140 bronze badges ...
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Number of days between two NSDates [duplicate]

...mponents:NSCalendarUnitDay fromDate:fromDate toDate:toDate options:0]; return [difference day]; } EDIT: Fantastic solution above, here's Swift version below as an extension on NSDate: extension NSDate { func numberOfDaysUntilDateTime(toDateTime: NSDate, inTimeZone timeZone: NSTime...
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How to determine if a string is a number with C++?

... user31264 5,47422 gold badges1414 silver badges3030 bronze badges answered Jan 11 '11 at 6:08 Charles SalviaCharles Salvia 47....