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Remove non-utf8 characters from string

...1110xxx 10xxxxxx * 3 ){1,100} # ...one or more times ) | . # anything else /x END; preg_replace($regex, '$1', $text); It searches for UTF-8 sequences, and captures those into group 1. It also matches single bytes that could not be ident...
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How to delete every other line in Vim?

...q. Press 10000@q PS: To go to command mode just press Escape a couple of times. share | improve this answer | follow | ...
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Is < faster than

...two is a jg versus a jge instruction. The two will take the same amount of time. I'd like to address the comment that nothing indicates that the different jump instructions take the same amount of time. This one is a little tricky to answer, but here's what I can give: In the Intel Instruction S...
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iReport not starting using JRE 8

...th Java 8 is through up to the version 5.6.0 at least (the most current at time of commenting) – Hubert Schumacher Jan 15 '16 at 4:59 1 ...
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Understanding the main method of python [duplicate]

...rint statement before the if __name__ line then it will print output every time any other code attempts to import that as a module. (Of course, this would be anti-social. Don't do that). I, personally, like these semantics. It encourages programmers to separate functionality (definitions) from fu...
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When to wrap quotes around a shell variable?

...ns to loop over or a wildcard to expand is less frequently seen, so we sometimes abbreviate to "quote everything unless you know precisely what you are doing". share | improve this answer |...
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PHP Pass by reference in foreach [duplicate]

..., $v is still a reference to the last array item, so it's overwritten each time. You can see it like that: $a = array ('zero','one','two', 'three'); foreach ($a as &amp;$v) { } foreach ($a as $v) { echo $v.'-'.$a[3].PHP_EOL; } As you can see, the last array item takes the current loop value...
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What does href expression do?

I have seen the following href used in webpages from time to time. However, I don't understand what this is trying to do or the technique. Can someone elaborate please? ...
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Is there a setting on Google Analytics to suppress use of cookies for users who have not yet given c

...entId'); }); However some features of google analytics (for example real time stats) do not work properly after this modification. More about google analytics cookies: https://developers.google.com/analytics/devguides/collection/analyticsjs/domains?hl=en#disableCookies ...
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cscope or ctags why choose one over the other? [closed]

... kernel root dir and have been playing with jumping around and most of the time end up in the wrong place. I read that ctags has problems with the c preprocessor, but considering that ctags is used in lxr there obviously must be something that can be done. – Robert S. Barnes ...