C/C++ Notes C++ Regex Helper You write std::regex that works the first try? Well, I am not nearly as good as you, and I find it helpful to iterate my patterns until I get it right: // compile with `g++ -std=c++20 -o regex-sandbox regex-sandbox.cpp` #include #include #include void usage(const char* proggy)
Build Continuous Integration with GitLab and Synology NAS Set up GitLab runners on NAS to automatically run unit tests after a push.
C/C++ Notes ANSI Colors in Command Prompt {fmt} has this nice feature allowing you to use colors [https://github.com/fmtlib/fmt] for your output via ANSI escape code [https://en.wikipedia.org/wiki/ANSI_escape_code]. Too bad when I tried to run it under Windows the first time all I saw was the escape code
C/C++ Notes Date/Time Manipulations C++ provides std::chrono::system_clock::time_point that represents time, that works well with other classes such as durations (std::chrono::milliseconds, etc.). However, it isn't always sufficient for date time manipulations because of daylight savings and leap years. Since time_point represents time interval since the clock's epoch,
C/C++ Notes JSON Parsing Update: I now use JSON for Modern C++ [https://github.com/nlohmann/json] with really nice API and reasonable performance. I recommend checking out what other options are available [https://github.com/miloyip/nativejson-benchmark]. The library jsmn [http://zserge.com/jsmn.html] is a C library that allows parsing of
C/C++ Notes Web Socket Client The library libwebsockets [https://libwebsockets.org/] is a C library that allows opening and two-way communication via web sockets. License and Source Source repository is available here [http://github.com/warmcat/libwebsockets/commits/master]. libwebsockets is Open Source, license is available here [http://github.com/warmcat/libwebsockets/blob/master/LICENSE]
C/C++ Notes Debug Output and Logging Being able to log messages and object states is one of the best tools for a programmer. The target environment may not have enough memory or network connectivity, or your application is real-time, therefore attaching a remote debugger may not be possible. Logging may be one of the few options
C/C++ Notes Working with Memory I have been fortunate enough to learn programming languages that allow me to manage my own memory. I think it is shocking that computer science introduction classes have stopped teaching C/C++ and pointers. This choice have robbed new graduates the opportunity of royally screwing up their first programs, and
C/C++ Notes Variadic Templates From C++11 on, you can use variadic templates functions with the following syntax: template< typename T, typename... A > This, combined with function overloading (where the same named function taking different parameters) means we can design a class that operate on a list of different types of objects with a
C/C++ Notes ZeroMQ Subscribe-Publish Pattern Set up ZeroMQ subscribe-publish pattern, useful for selectively receive certain kind of events.
C/C++ Notes Run Member Function in a Thread C++11 thread and Lambda function really beautifies code that works with threads. If I have a class MyObj with a member function DoWork(): class MyObj { public: void DoWork(); void Think(); }; It has always been relatively effortless to spawn a thread, but if you need data from the underlying class
C/C++ Notes Ranged-based for Loop With C++11, operating on data sets is easy to do with highly readable code, as long as the container supports iterators. For example when dealing std::map: for( auto item : items ) { // item.first is the key, and // item.second is the value cout << item.first << " = " << item.second; } To access
