C++ - Reddit

Kris Jusiak - Online AVR/Arduino Developement with C++20 - Meeting Embedded 2020 https://www.youtube.com/watch?v=MskKTIdW45c https://redd.it/moqs44 @r_cpp

C++11/14 at Scale - What Have We Learned? - ACCU 2021 https://www.youtube.com/watch?v=H8wzuvynV78 https://redd.it/mood6s @r_cpp

The Case of string_view and the Magic String https://blogs.msmvps.com/gdicanio/2021/03/26/the-case-of-string_view-and-the-magic-string/ https://redd.it/momz8m @r_cpp

Installing C++ package via a standard local user. I installed 2 packages via a standard local user, not the administrator. I had to insert the administrator password to give it permission, so I suppose all users can use the packages right? That's what I wonder. https://redd.it/mob4r6 @r_cpp

imgui_md: markdown renderer for Dear ImGui using MD4C parser. https://github.com/mekhontsev/imgui_md https://redd.it/mo52zn @r_cpp

A look at LLVM - comparing clamp implementations https://secret.club/2021/04/09/std-clamp.html https://redd.it/mo4sp6 @r_cpp

Event loop ingredients for elaboration I would like to share my point of view about event loops. Ingredients and test concept code And would be very happy to elaborate about the code with anyone who is interesting to review/learn the concept from my point of view and give opinion/question about to push the concept and skill event further. https://redd.it/mo2qyb @r_cpp

This Videogame Developer Used the STL and You'll Never Guess What Happened - ACCU21 https://youtu.be/xoEUO9DezV8 https://redd.it/mo1arn @r_cpp

Safer C++: MISRA-C++ : 202X Rules and Beyond - Peter Sommerlad - ACCU 2021 https://youtu.be/SAK2IyYtMBE https://redd.it/mo1c1x @r_cpp

How to build this in-game overlay in C++ Hi, I'm fairly new, I started learning C++ cause of this app. I'm sharing a screenshot from in-game Rainbow Six Siege. https://i.imgur.com/QxiUZkX.jpg This app lets you find stats of in-game players, but this is not part of Rainbow Six Siege game, its an Overlay which draws above the game, as well reads your network IP and connected users IP to find the stats. \- I would like to know which frameworks I will need to build such in-game overlay in C++ \- What I need to scan computer IP and stats like above \- I don't want to do this in any-other language, but only C++ ​ Please be gentle on me If I'm being naive here. https://redd.it/mnyf3o @r_cpp

Create a future using coroutine http://cpp-rendering.io/create-a-future-using-coroutine/ https://redd.it/mns491 @r_cpp

Introduction to C++ Compilation on the Command Line https://unrealistic.dev/posts/introduction-to-c-compilation-on-the-command-line https://redd.it/mnsadp @r_cpp

forkleft : new generation mark-up language, c++ core library, header-only. https://github.com/ferhatgec/forkleft https://redd.it/mnqfqn @r_cpp

Learning About Memory Layout Assuming I know C++, if I wanted to learn how the memory of an application is laid out at a register level given the source code of the application and the source code of the compiler that was used to compile it, what should I be looking at learning? I see very few facilities in C/C++ that deal with memory layout, so my first thought was assembly. But C++ compilers are not written in assembly either, so I'm not sure how that would help me. Are there any specific fields in computer architecture that are prerequisite for this? Could anyone provide a roadmap? https://redd.it/mnqmny @r_cpp

Learning C# I know that this is not C# subreddit, but I did not find subreddit for C#, so I am posting it here. So, I am not a beginner in the programing, I am really good at python, and I know basics from html/css/javascript But I want to learn C#. Are there good tutorials you could recommend me? Because looking for good resources is pain, Thanks https://redd.it/mnpn4m @r_cpp

Networking TS: first impression and questions Hi, I am an experienced C++ programmers, but a beginner at network programming. I plan to develop a C++ network application, so decided to try the Networking TS. I have been trying to figure out how to use it for 3 days, and I am starting to understand things a little. I first tried using the std::experimental::net that comes with gcc in Ubuntu 20.04, but it turned out to be incomplete. In order to make the code work, I had to use this github repository instead: https://github.com/chriskohlhoff/networking-ts-impl. The last commit was 2 years ago. Is it the recommended implementation? I tried to teach myself how to use it by following the boost::asio tutorial. It was a bit difficult because of the differences between the two libraries, but I managed to translate the asio tutorial samples without using any boost library. I was surprised that I had to pass the port number as a string to net::ip::tcp::resolver::resolve. Wouldn't it be much better to use an int override, both in terms of implementation and usage of this function? I really don't like having to convert my port number to a string. Is there a way to do it without the conversion? I also dislike the enablesharedfromthis trick used in the boost::asio examples. It looks like a dirty anti-pattern. I feel it is possible to do things much more cleanly without it. I tried to implement an echo server differently: the server keeps a std::list<connection>, and the completion handlers are members of the server class instead of the connection class. They take an iterator to the list as parameter, and can cleanly erase the connection from the list. I feel it is much cleaner and simpler than sending connections from lambda to lambda, and using tricks to let them commit suicide by themselves. Is there any advantage of enablesharedfromthis compared to what I do? The scope of boost::asio is wider than networking, and I am surprised that C++ seems to be restricting it to networking. I understand that standardizing a library is a lot of work, and taking care of networking first should have priority. But why not call it std::asio instead, and leave the possibility to add asynchronous file operation to it later? https://redd.it/mnmf56 @r_cpp

Generate QR Code with Python https://youtu.be/CC2g_QCWDPk https://redd.it/mnjbf7 @r_cpp

C++Now 2021 Online: Bill Hoffmann will give the opening keynote talk about CMake https://cppnow.org/announcements/2021/04/Hoffman-keynote/ https://redd.it/mng4il @r_cpp

Speed up integer kernel loops by 10-25% when you avoid Standard C++ The "restrict" keyword has been a long time coming to C++. One of the reasons Fortran can be faster than C/C++ in the normal case is because its language definition assumes no aliasing. Standard C++ doesn't even have that option available. Starting with Blitz++, peeps started writing optimizations with templates outside of the compiler. I'm not sure this is yet another case of C++ getting the defaults wrong but having the option to note the lack of aliasing would be useful. Here are some timings in microseconds from my ye olde Haswell laptop showing some utility for one particular kernel (100k repeats for the distribution): ||||normal|||restrict||Is normal| |:-|:-|:-|:-|:-|:-|:-|:-|:-| |data type|vector size|10%|median|90%|10%|median|90%|slower?| |||||||||| |i32|64|.018|.020|.039|.015|.016|.031|25%| ||256|.065|.076|.145|.058|.060|.111|26%| ||4096|1.304|1.432|2.163|1.177|1.241|1.846|15%| ||65536|25.474|28.758|38.147|22.467|23.238|25.523|24%| |||||||||| |f32|64|.070|.077|.154|.066|.070|.129|9%| ||256|.290|.291|.624|.288|.289|.569|1%| ||4096|4.494|4.717|5.341|4.337|4.473|5.384|5%| ||65536|84.910|92.715|149.789|73.627|82.019|116.101|13%| |||||||||| |i8|4096|.638|.684|.957|.556|.563|.759|21%| |i16|4096|.663|.695|1.055|.599|.618|1.123|13%| |i64|4096|3.010|3.435|4.915|2.755|2.879|4.045|19%| |f64|4096|4.442|4.495|5.483|4.344|4.428|4.974|2%| |i128|4096|14.504|15.743|23.147|13.674|15.474|22.099|2%| The example kernel used here looks like this: template<i64 N> R foo(pT restrict a, pT restrict b, pT restrict c) { R result{0}; for( auto i = 0; i<N; ++i) { ai = aib[i] + c[i]; b[i] = c[i]bi + ai; result += ai + bi; } return result; } Assembly generation here FWIW: https://godbolt.org/z/v9q5sdcx5 The most recent standard proposal that may help regards disjoint memory: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2018/p1296r0.pdf Previous papers looked at activating the C restrict keyword for C++, such as: http://www.open-std.org/JTC1/sc22/wg21/docs/papers/2014/n3988.pdf Most major compilers support a "restrict" qualifier, such as __restrict__ or __restrict, etc: gcc, msvc, intel(edg), hp(edg), ibm, nvcc, ti, clang. YMMV, but think about using restrict for your performance-sensitive code if it is safe to do so. No mainstream compilers don't have support for a reason. \--Matt. https://redd.it/mmuukz @r_cpp

Clang precompiled headers and improving C++ compile times, conclusion https://llunak.blogspot.com/2021/04/clang-precompiled-headers-and-improving.html https://redd.it/mnchs9 @r_cpp