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What exactly is nullptr?

...constant can be converted to std::nullptr_t. The opposite direction is not allowed. This allows overloading a function for both pointers and integers, and passing nullptr to select the pointer version. Passing NULL or 0 would confusingly select the int version. A cast of nullptr_t to an integral ty...
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What characters are valid for JavaScript variable names?

...ou an idea of how wrong Anthony Mills' answer is: if you were to summarize all these rules in a single ASCII-only regular expression for JavaScript, it would be 11,236 characters long. Here it is: // ES5.1 / Unicode 6.1 /^(?!(?:do|if|in|for|let|new|try|var|case|else|enum|eval|false|null|this|true|v...
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Why is sed not recognizing \t as a tab?

... Not all versions of sed understand \t. Just insert a literal tab instead (press Ctrl-V then Tab). share | improve this answer ...
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Generate pdf from HTML in div using Javascript

...lement IDs are still done in jQuery style "#id", but it does not mean that all jQuery selectors are supported. Therefore replacing '#ignorePDF' with class selectors like '.ignorePDF' did not work for me. Instead you will have to add the same handler for each and every element, which you want to ig...
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Intermittent log4net RollingFileAppender locked file issue

... Try adding <lockingModel type="log4net.Appender.FileAppender+MinimalLock" /> to your <appender /> element. There is some performance impact because this means that log4net will lock the file, write to it, and unlock it for each write operation (as opposed to the default behavior,...
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Writing your own STL Container

...or_tag,std::random_access_iterator_tag. Also note that the below is technically more strict than required, but this is the idea. Note that the vast majority of the "standard" functions are technically optional, due to the awesomeness that is iterators. template <class T, class A = std::allocator...
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Set Background cell color in PHPExcel

...('rgb' => 'FF0000') ) ) ); Source: http://bayu.freelancer.web.id/2010/07/16/phpexcel-advanced-read-write-excel-made-simple/ share | improve this answer | fol...
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How do you install Boost on MacOS?

How do you install Boost on MacOS? Right now I can't find bjam for the Mac. 10 Answers ...
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HTML Body says cz-shortcut-listen=“true” with Chrome's Developer Tools?

...ou can just run a different Chrome user profile that has no extensions installed, but sometimes those very extensions - Colorzilla, even - are really useful for analysing web pages. – iono Feb 28 '13 at 7:12 ...
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Quickest way to convert a base 10 number to any base in .NET?

...comments, Convert.ToString only supports the following limited - but typically sufficient - set of bases: 2, 8, 10, or 16. Update (to meet the requirement to convert to any base): I'm not aware of any method in the BCL which is capable to convert numbers to any base so you would have to write you...