Some strange thoughts

Just about anything

C vs php vs hhvm vs go simple benchmark

Last time i do many thing starting from small utilities and up to big projects in golang. And many friends ask me why… first time i just said that golang is simple and cool :) But now i decided to do simple benchmark to show why… So, used interpreters/compilers: PHP: $ php --version PHP 5.6.4-4ubuntu6 (cli) (built: Apr 17 2015 15:47:51) Copyright (c) 1997-2014 The PHP Group Zend Engine v2.6.0, Copyright (c) 1998-2014 Zend Technologies with Zend OPcache v7.

Unity-style window activation in KDE

I have used unity in Ubuntu for a long time and i’m very used to use Win+[number] key combination to switch to windows. For example i have Win+1 to switch to terminal emulator. Some months ago I have tried new KDE5 and it was awesome. But I found no way to activate (or launch if not started) application on shortcut :) Only lunch a new one every time, but it’s not what i want.

QHash and QMap in threaded application

As you know QMap/QHash are little bit faster than std::map and std::unordered_map … but why? I have no ideas about this before I have used them in high-load muti-thread application. I send data in QHash via queued signal/slot between threads. Anything looks fine, but 1-2 times per day application gets segfault. It was very strange because it crashed after different count iterations but it was millions iterations. GDB shows something like this: