C++ - Reddit

16 years ago Hey, 16 years ago, I started that project that allows you to code sites in C++. I was 15 years old. I actually showed it to Bjarne Stroustrup on Skype and he said “interesting”. I sold this technology to a few companies in the past. I never released it, but I’ve been working on it ever since. Configuring requests uses mdk, a programming language that I created that is very similar to C++ but with custom features. If you know C++, then you know MDK :). Examples of sites that use it: james.com, shinepost.com, and a few other sites I own. If you look at shinepost, you’ll see it’s fully obfuscated (it’s part of the features). Anyways, I want to release it soon. The reason of this post is because I wanted advanced users to try it and give me feedback before I release it. Send me a message on reddit and I’ll add you in for testing day shortly. https://redd.it/1imfsjo @r_cpp

The "DIVIDULO" operator - The operator combining division and remainder into one! In C++, we can operator on integers with division and remainder operations. We can say c = a/b or c=a%b. We can't really say that Q,R = A/B with R, until now. The dividulo operator! The often derided comma operator can be used as the dividulo operator. In its natural C++ form QR=A,B. Division is Q=A/B. Remainder is R=A%B. Class 'Number' which holds and manages a signed integer can have its operators leveraged so that the oft-unused comma operator can be used for something useful and meaningful. Behold the invocation Number operator / (const Number& rhs) const // Integer division { return (operator , (rhs)).first; } Number operator % (const Number& rhs) const // Integer remainder { return (operator , (rhs)).second; } std::pair<Number, Number> operator , (const Number& rhs) const // Both division and remainder { return std::pair<Number, Number>(1,0); } https://redd.it/1imc6qm @r_cpp

Why does everyone fail to optimize this? Basically c? f1() : f2() vs (c? f1 : f2)() Yes, the former is technically a direct call and the latter is technically an indirect call. But logically it's the same thing. There are no observable differences, so the as-if should apply. The latter is also sometimes strongly preferable, e.g. when there are 10 arguments to pass. Is there any reason why all the major compilers meticulously preserve the indirection? https://redd.it/1imdffy @r_cpp

New C++ Conference Videos Released This Month - February 2025 (Updated to include videos released 2025-02-03 - 2025-02-09) CppCon 2025-02-03 - 2025-02-09 SuperCharge Your Intra-Process Communication Programs With C++20 and Contract-Concept-Implementation Pattern - Arian Ajdari - [https://youtu.be/LpOYabhTEDs](https://youtu.be/LpOYabhTEDs) C++ 20 Innovations: High-Performance Cross-Platform Architecture in C++ - Noah Stein - https://youtu.be/8MEsM\_YKA3M Blazing Trails: Building the World's Fastest GameBoy Emulator in Modern C++ - Tom Tesch - [https://youtu.be/4lliFwe5\_yg](https://youtu.be/4lliFwe5_yg) Implementing Particle Filters with C++ Ranges - Nahuel Espinosa - https://youtu.be/WT-aBT3XulU Making Hard C++ Tests Easy: A Case Study From the Motion Planning Domain - Chip Hogg - [https://youtu.be/8D7vpR9WCtw](https://youtu.be/8D7vpR9WCtw) 2025-02-27 - 2025-02-02 Refactoring C++ Code for Unit testing with Dependency Injection - Peter Muldoon - https://youtu.be/as5Z45G59Ws C++ Under the Hood: Internal Class Mechanisms - Chris Ryan - [https://youtu.be/gWinNE5rd6Q](https://youtu.be/gWinNE5rd6Q) Secrets of C++ Scripting Bindings: Bridging Compile Time and Run Time - Jason Turner - https://youtu.be/Ny9-516Gh28 Building Safe and Reliable Surgical Robotics with C++ - Milad Khaledyan - [https://youtu.be/Lnr75tbeYyA](https://youtu.be/Lnr75tbeYyA) ISO C++ Standards Committee Panel Discussion 2024 - Hosted by Herb Sutter -https://youtu.be/GDpbM90KKbg Audio Developer Conference 2025-02-03 - 2025-02-09 Javascript, WebViews and C++ - “If You Can’t Beat Them, Join Them” - Julian Storer - [https://youtu.be/NBRO7EdZ4g0](https://youtu.be/NBRO7EdZ4g0) How to Build a Simple, Modern & Collaborative DAW for Producers of All Levels - Anurag Choudhary - https://youtu.be/W5v6IZ4Cgjk Inside Game Audio Programming: Purpose, Process, and Impact - Harleen Singh - [https://youtu.be/iQ7ChqmO0Bs](https://youtu.be/iQ7ChqmO0Bs) 2025-01-27 - 2025-02-02 Keynote: Foundation Models Don’t Understand Me - Lessons From AI Lutherie for Live Performances - Manaswi Mishra - https://youtu.be/SnbJpvz86SM Shrink Your Virtual Analog Model Neural Networks! - Christopher Clarke - [https://youtu.be/lZxfv0euB98](https://youtu.be/lZxfv0euB98) In Praise of Loudness - Samuel Fischmann - https://youtu.be/0Hj7PYid\_tE Core C++ 2025-02-03 - 2025-02-09 Debug C++ Programs You did not write - Elazar Leibovich - [https://www.youtube.com/watch?v=RmhvZxwIKEw](https://www.youtube.com/watch?v=RmhvZxwIKEw) Welcome to the meta::[[verse\]\]! - Inbal Levi - https://www.youtube.com/watch?v=1en5wSqkquQ 2025-01-27 - 2025-02-02 C++ Fundamentals: Unit Testing - Amir Kirsh - [https://www.youtube.com/watch?v=hzQxHrNT-Jw](https://www.youtube.com/watch?v=hzQxHrNT-Jw) Optimizing Embedded Software Infrastructure - Alex Kushnir, Akram Zoabi - https://www.youtube.com/watch?v=1Lc3R2U87Ak 3D logs to analyze self-driving cars - Ruslan Burakov - [https://www.youtube.com/watch?v=LTZubbUcpnE](https://www.youtube.com/watch?v=LTZubbUcpnE) Back to Basics: Design Patterns - Noam Weiss - https://www.youtube.com/watch?v=qeU7v1XPBHQ The Pains and Joys of C++ In-Process Graph Execution - Svyatoslav Feldsherov - [https://www.youtube.com/watch?v=BAylU9BeY4Y](https://www.youtube.com/watch?v=BAylU9BeY4Y) C++ Fundamentals: Object-Oriented Programming with C++ - Nathanel Green - https://www.youtube.com/watch?v=mD--ExuQXDc https://redd.it/1im9rws @r_cpp

What are good C++ practices for file handling in a project? I have a decent beginner/early-intermediate textbook understanding of C++ but I lack practical experience. I'm starting a decent sized project soon that I'll be doing on my own and I don't know how to go about file handling. Since I have only worked on personal projects and small bits of code I have always done everything in a single file (I do the same when working in another language such as Python). I know this is bad practice and I would like to change to a more professional approach. When I look at projects on github people usually have their code very neatly broken down into separate files. What is the standard for organizing a project into separate files? Obviously header fields should be on their own, but what about everything else? Should every function get its own file? https://redd.it/1im9ey5 @r_cpp

SYCL, CUDA, and others --- experiences and future trends in heterogeneous C++ programming? Hi all, Long time (albeit mediocre) CUDA programmer here, mostly in the HPC / scientific computing space. During the last several years I wasn't paying too much attention to the developments in the C++ heterogeneous programming ecosystem --- a pandemic plus children takes away a lot of time --- but over the recent holiday break I heard about SYCL and started learning more about modern CUDA as well as the explosion of other frameworks (SYCL, Kokkos, RAJA, etc). I spent a little bit of time making a starter project with SYCL (using AdaptiveCpp), and I was... frankly, floored at how nice the experience was! Leaning more and more heavily into something like SYCL and modern C++ rather than device-specific languages seems quite natural, but I can't tell what the trends in this space really are. Every few months I see a post or two pop up, but I'm really curious to hear about other people's experiences and perspectives. Are you using these frameworks? What are your thoughts on the future of heterogeneous programming in C++? Do we think things like SYCL will be around and supported in 5-10 years, or is this more likely to be a transitional period where something (but who knows what) gets settled on by the majority of the field? https://redd.it/1im99l2 @r_cpp

Learning C++ for embedded systems As I observe in my country, 90% of companies looking to hire an embedded engineer require excellent knowledge of the C++ programming language rather than C. I am proficient in C (I am EE engineer). Why is that? Can you give me advice on how to quickly learn C++ effectively? Do you recommend any books, good courses, or other resources? My goal is to study one hour per day for six months. Thank you all in advance! https://redd.it/1im1mqo @r_cpp

funtrace - a C++ function call tracer for x86/Linux https://github.com/yosefk/funtrace https://redd.it/1ilyupk @r_cpp

optimizing out unused large static arrays? i have a simple question that I think I know the answer to but I am not sure. In a modern C++ compiler (mainly GCC, clang, and MSVC) if you declare a large initialized static array (in the .bss segment) in some .cpp file and you never refer to its declaration in code (IOW, it's unused), will the data end up in the binary or not? (edited) https://redd.it/1ilys6o @r_cpp

New C++ learner. Program runs fine when I click the play button in the run & debug section but not the VScode button in the top right. Wasn't happening a few days ago. I go to the run & debug section and hit that green play button and it runs smoothly When I do the button in the top right I get this error code "the preLaunchTask 'C/C++: main.C++build active file' terminated with exit code -1." Why is this happening? https://redd.it/1ilw9ja @r_cpp

What's wrong with this Ok so I am on visual studio rn and "#include <iostream>", it's written exactly how I wrote it I like checked 10 times,gets underlined as red,but why? https://redd.it/1ilspxq @r_cpp

Is this a IDE issue or something else Im extremely new to c++ and I'm really confused #include <iostream> int main() { std::string name; int age; std::cout << "Enter your name:"; std::cin >> name; std::cout << "Enter your age:"; std::cin >> age; std::cout << "Hello " << name << "!" << std::endl; std::cout << "You are " << age << " years old." << std::endl; return 0; } This is the output I'm getting; Enter your name:12 Enter your age:12 Hello 12! You are 12 years old. https://redd.it/1ilsqvj @r_cpp

C++ exe file doesn’t exist C++ noop here, I’ve been having this problem where the cpp file compiles just fine and creates .exe file but the problem is it doesn’t run anything, just empty output on the terminal and when i run it on an IDE it says exe file doesn’t exist https://redd.it/1ilr4zb @r_cpp

Giving a new chance to VS Code I’ve just renewed my CLion license and I love CLion for : excellent integration of Cmake, superbes git and GitHub tools, good debugging tools, easy list and launch of Boost Tests, superior refactoring tools and code browsing, integration of static code analysis, plenty of plugins. Nevertheless I was thinking of how is VSCode, nowadays (last time I’ve tried seriously was 3 years ago). What plugins should i install to get something as powerful as CLion? https://redd.it/1ilqe95 @r_cpp

Fun with C++26 reflection - Keyword Arguments In anticipation of the upcoming reflection features, I've lately spent a lot of time messing around with it. I've just finished my first blog post on the topic - I hope y'all like it. https://pydong.org/posts/KwArgs/ https://github.com/Tsche/kwargs (example implementation) https://redd.it/1ilodqh @r_cpp

CPP projects I'm currently in my second to last semester of my CIS degree. To help drill in and better work with CPP I was looking to find some ideas for beginners CPP projects. What were some CPP projects that helped you develop your skills? https://redd.it/1ilnxg7 @r_cpp

Improving std `<random>` https://github.com/DmitriBogdanov/UTL/blob/master/docs/module_random.md https://redd.it/1illegf @r_cpp

c++ or nodeJS I have been a JavaScript/Node.js programmer for almost a year, primarily focusing on backend development. I am very interested in cybersecurity and cryptocurrency, but I haven't found structured learning paths for these fields. I have no interest in frontend development, and I am wondering whether I should continue with Node.js or switch to C++. Some people say that learning two programming languages at the same time can make it harder to master either one. In your opinion: 1. Should I first focus on mastering Node.js and then move on to C++? 2. Or would it be beneficial to learn both C++ and Node.js simultaneously for my goals? I would appreciate any guidance on the best learning path for someone interested in backend, cybersecurity, and cryptocurrency development. https://redd.it/1iljz6g @r_cpp

Hello Test post here https://redd.it/1ilehfn @r_cpp

Are there any C++ datetime-timezone-calendar libraries which support nanoseconds resolution? I'm looking for a library to integrate with my current C++ project. Ideally, such a library would support datetimes, timezone aware datetimes, and calendar functionality. However, the bare minimum I am looking for is something which supports UTC datetime values with nanoseconds resolution (microseconds may be enough) and some standard serialization and deserialization format. The most sensible format which I would like to use for serialization is some ISO scientific format, for example YYYY-MM-DDThh:mm:ss.fffffffff+00:00 Can anyone assist with any recommendations? AFAIK the standard library chrono type does not fit these requirements, in particular the serialization and deserialziation format. If I were using Rust, I would just use the chrono crate, and accept any limitations this might have. https://redd.it/1ild7yt @r_cpp