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boost::flat_map and its performance compared to map and unordered_map

...haven't been able to find any performance comparisons. How does it compare and what are the best use cases for it? 2 Answer...
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Get the real width and height of an image with JavaScript? (in Safari/Chrome)

... Webkit browsers set the height and width property after the image is loaded. Instead of using timeouts, I'd recommend using an image's onload event. Here's a quick example: var img = $("img")[0]; // Get my img elem var pic_real_width, pic_real_height; $...
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How to make child process die after parent exits?

...t when its parent dies. This value is cleared for the child of a fork(2) and (since Linux 2.4.36 / 2.6.23) when executing a set-user-ID or set-group-ID binary. – qrdl Dec 10 '16 at 19:46 ...
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Difference between Ctrl+Shift+F and Ctrl+I in Eclipse

... If you press CTRL + I it will just format tabs/whitespaces in code and pressing CTRL + SHIFT + F format all code that is format tabs/whitespaces and also divide code lines in a way that it is visible without horizontal scroll. ...
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Sorting a vector of custom objects

...ting a vector containing custom (i.e. user defined) objects. Probably, standard STL algorithm sort along with a predicate (a function or a function object) which would operate on one of the fields (as a key for sorting) in the custom object should be used. Am I on the right track? ...
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Unicode equivalents for \w and \b in Java regular expressions?

Many modern regex implementations interpret the \w character class shorthand as "any letter, digit, or connecting punctuation" (usually: underscore). That way, a regex like \w+ matches words like hello , élève , GOÄ_432 or gefräßig . ...
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How to convert std::string to lower case?

...tion tolower() , however in the past I have had issues with this function and it is hardly ideal anyway as use with a std::string would require iterating over each character. ...
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Running karma after installation results in 'karma' is not recognized as an internal or external com

... The command line interface is in a separate package. To install this use: npm install -g karma-cli share | improve this an...
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Insert picture into Excel cell [closed]

...aded (grey area) on outside of comment box > Format Comment > Colors and Lines > Fill > Color > Fill Effects > Picture > (Browse to picture) > Click OK Image will appear on hover over. Microsoft Office 365 (2019) introduced new things called comments and renamed the old co...
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Can I use a :before or :after pseudo-element on an input field?

... :after and :before are not supported in Internet Explorer 7 and under, on any elements. It's also not meant to be used on replaced elements such as form elements (inputs) and image elements. In other words it's impossible with pur...