C++ - Reddit

Modern C++23 Makefile for new projects This is a modern makefile that I came up with for new projects that use the latest standard, with very very strict warnings to make sure your code is in good shape. Just wanted to share because people keep saying that C++ is unsafe and that's BS, you just need to get your warnings right. CXX := g++ WARNINGS := \ -Wall -Wextra -Wpedantic -Wconversion -Wsign-conversion -Wshadow \ -Wdouble-promotion -Wformat=2 -Wundef -Wcast-qual -Wcast-align=strict \ -Wnon-virtual-dtor -Wold-style-cast -Woverloaded-virtual -Wnull-dereference \ -Wunused -Wuninitialized -Winit-self -Wswitch-enum -Wredundant-decls \ -Wsuggest-override -Wimplicit-fallthrough=5 -Walloca -Werror DEBUG_FLAGS := -O0 -g3 -fsanitize=address,undefined -fno-omit-frame-pointer RELEASE_FLAGS := -O3 -march=native -DNDEBUG -flto SRC_DIR := src BUILD_DIR := build BIN_DIR := bin TARGET := myprogram SRC := $(wildcard $(SRC_DIR)/*.cpp) OBJ := $(SRC:$(SRC_DIR)/%.cpp=$(BUILD_DIR)/$(MODE)/%.o) all: release debug: MODE := debug debug: CXXFLAGS = $(DEBUG_FLAGS) $(WARNINGS) -std=c++23 debug: dirs $(BIN_DIR)/$(TARGET) release: MODE := release release: CXXFLAGS = $(RELEASE_FLAGS) $(WARNINGS) -std=c++23 release: dirs $(BIN_DIR)/$(TARGET) $(BIN_DIR)/$(TARGET): $(OBJ) $(CXX) $(CXXFLAGS) $^ -o $@ $(BUILD_DIR)/$(MODE)/%.o: $(SRC_DIR)/%.cpp $(CXX) $(CXXFLAGS) -c $< -o $@ dirs: @mkdir -p $(BUILD_DIR)/debug $(BUILD_DIR)/release $(BIN_DIR) clean: rm -rf $(BUILD_DIR) $(BIN_DIR) .PHONY: all debug release clean dirs https://redd.it/1ne4fu5 @r_cpp

Good Library for a 2D RPG game? I want to start learning how to make an actual game with the windows and stuff with C++. What libraries do I need to make it on VS Code? Also, I have made a fairly simple game before on Java, if there is anything similar to it. https://redd.it/1ne26g3 @r_cpp

Pointers and References as Parameters and Arguments in Functions Hey guys, I was working on a project for a class of mine, and I wanted to make sure that I could properly explain myself. This is for Computer Science 2, so I don't need it to be overly technical. I was working with a function that required one of the arguments to be a pointer, but it worked when I was passing a variable with the address-of operator (&). This seems kind of odd to me without some sort of explanation of datatype decay/conversion or something because a pointer holds an address, but isn't *exactly* an address. Could I get some explanations? https://redd.it/1ndlz7n @r_cpp

C++ Language Updates in MSVC Build Tools v14.50 https://devblogs.microsoft.com/cppblog/c-language-updates-in-msvc-build-tools-v14-50/ https://redd.it/1ndfmvk @r_cpp

Sourcetrail (Fork) 2025.9.9 released Hi everybody, Sourcetrail 2025.9.9, a fork of the C++/Java source explorer, has been released with these changes: C/C++: Add indexing of `auto` return types GUI: Allow tab closing with middle mouse click GUI: Improve layout of license window content GUI: Add Open to context menu of start window https://redd.it/1nd9o10 @r_cpp

C++ Day 2025: Agenda & Free Tickets Hi all! The agenda for C++ Day 2025 is now live (all talks will be in English), and (free) tickets are available! When & where: October 25, in Pavia (northern Italy) What: a half-day of C++ talks + networking Organized by the Italian C++ Community together with SEA Vision (our host & main sponsor). Two more sponsors are already confirmed, with others in the pipeline. Check out the agenda & grab your ticket: http://italiancpp.org/cppday25 See you there! Marco https://redd.it/1nd7y1f @r_cpp

I feel that I lack the logical thinking ability needed for programming. What should I do? https://redd.it/1nd6bkn @r_cpp

announced their schedule for ADC 2025 which you can find at [https://conference.audio.dev/schedule/adc25/](https://conference.audio.dev/schedule/adc25/) * **ACCU on Sea Registration Is Now Open** – You can buy super early bird tickets at [https://accuconference.org/booking](https://accuconference.org/booking) with discounts available for ACCU members. Finally anyone who is coming to a conference in the UK such as C++ on Sea or ADC from overseas **may now be required to obtain Visas to attend**. Find out more including how to get a VISA at [https://homeofficemedia.blog.gov.uk/electronic-travel-authorisation-eta-factsheet-january-2025/](https://homeofficemedia.blog.gov.uk/electronic-travel-authorisation-eta-factsheet-january-2025/) https://redd.it/1nclmuz @r_cpp

Latest News From Upcoming C++ Conferences (2025-09-09) This Reddit post will now be a roundup of any **new** news from upcoming conferences with then the full list being available at [https://programmingarchive.com/upcoming-conference-news/](https://programmingarchive.com/upcoming-conference-news/) **EARLY ACCESS TO YOUTUBE VIDEOS** The following conferences are offering Early Access to their YouTube videos: * **ACCU Early Access Now Open (£35 per year) –** Access all 91 YouTube videos from the 2025 Conference through the Early Access Program. In addition, gain additional benefits such as the journals, and a discount to the yearly conference by joining ACCU today. Find out more about the membership including how to join at [https://www.accu.org/menu-overviews/membership/](https://www.accu.org/menu-overviews/membership/) * Anyone who attended the ACCU 2025 Conference who is NOT already a member will be able to claim free digital membership. **OPEN CALL FOR SPEAKERS** No Open Calls For Speakers **OTHER OPEN CALLS** * **ADC25 Call For Posters Now Open** – Anyone interested in submitting a poster can submit * **A Virtual Poster** which will be shown online at ADC25 – [https://docs.google.com/forms/d/e/1FAIpQLSeJkXEzb–rWX-LBUErWA0gyfUX\_CXBCUYF5fwg\_agDwMppeQ/viewform?usp=dialog](https://docs.google.com/forms/d/e/1FAIpQLSeJkXEzb--rWX-LBUErWA0gyfUX_CXBCUYF5fwg_agDwMppeQ/viewform?usp=dialog) * **A Physical Poster** which will be shown in-person at ADC25 – [https://docs.google.com/forms/d/e/1FAIpQLScI4gxxwkQNiyANMuluaCSE39C1ZhQOES3424YW8jK9tA291A/viewform?usp=dialog](https://docs.google.com/forms/d/e/1FAIpQLScI4gxxwkQNiyANMuluaCSE39C1ZhQOES3424YW8jK9tA291A/viewform?usp=dialog) * **ADC Call For Online Volunteers Now Open** – Anyone interested in volunteering online for ADC 2025 on Monday 10th – Wednesday 12th November have until October 1st to apply. Find out more here [https://docs.google.com/forms/d/e/1FAIpQLScpH\_FVB-TTNFdbQf4m8CGqQHrP8NWuvCEZjvYRr4Vw20c3wg/viewform?usp=dialog](https://docs.google.com/forms/d/e/1FAIpQLScpH_FVB-TTNFdbQf4m8CGqQHrP8NWuvCEZjvYRr4Vw20c3wg/viewform?usp=dialog) **TICKETS AVAILABLE TO PURCHASE** The following conferences currently have tickets available to purchase * **CppCon** – **Last chance to buy tickets** to attend CppCon 2025 in-person at Aurora, Colorado which starts next week. Visit [https://cppcon.org/registration/](https://cppcon.org/registration/) for more information. * **ADCx Gather** – You can attend ADCx Gather for free. Find out how at [https://audio.dev/adcx-gather-info/](https://audio.dev/adcx-gather-info/) * **C++ Under The Sea** – You can now buy tickets to attend C++ Under The Sea 2025 at Breda, Netherlands at [https://store.ticketing.cm.com/cppunderthesea2025/step/4f730cc9-df6a-4a7e-b9fe-f94cfdf8e0cc](https://store.ticketing.cm.com/cppunderthesea2025/step/4f730cc9-df6a-4a7e-b9fe-f94cfdf8e0cc) * **\[NEW\] C++Day** – You can attend C++Day in-person for free by visiting [https://italiancpp.github.io/cppday25/#reservation](https://italiancpp.github.io/cppday25/#reservation) * **ADC** – **Last chance to buy early bird tickets** to attend ADC 2025 online or in-person at Bristol, UK at [https://audio.dev/tickets/](https://audio.dev/tickets/). * Early bird pricing for in-person tickets will end on September 15th. * **Meeting C++** – You can buy online or in-person tickets at [https://meetingcpp.com/2025/](https://meetingcpp.com/2025/) * **ACCU on Sea** – You can buy super early bird tickets at [https://accuconference.org/booking](https://accuconference.org/booking) with discounts available for ACCU members. **OTHER NEWS** * **\[NEW\] C++Day Schedule Announced** – View the schedule for the free one day in-person event at [https://italiancpp.github.io/cppday25/#agenda](https://italiancpp.github.io/cppday25/#agenda) * **ADCx Gather 25 Schedule Announced** – View the schedule for the free one day online event at [https://conference.audio.dev/schedule/adcxgather25/](https://conference.audio.dev/schedule/adcxgather25/) * **ADC 2025 Schedule Announced** – ADC have

Visual Studio 2026 Insiders is here! - Visual Studio Blog https://devblogs.microsoft.com/visualstudio/visual-studio-2026-insiders-is-here/ https://redd.it/1ncpb0b @r_cpp

MV: A real time memory visualization tool for C++ Hey everyone, I wanted to share a tool I’ve been working on that helps beginners visualize how C++ code interacts with memory (stack and heap) in real time. This proof of concept is designed to make understanding memory management more intuitive. **Key Features:** * Instantly see how variables affect the stack and the heap * Visualize heap allocations and pointers with arrows * Detect memory leaks and dangling pointers This tool isn’t meant to replace platforms like PythonTutor, it’s a real time learning aid for students. To maintain this experience, I intentionally did not add support nor plan to support certain C++ features Test out the tool and let me know what you think! There may be bugs, so approach it with a beginner’s mindset and do let me know if you have any suggestions The main application is a desktop app built with Tauri, and there’s also a web version using WASM: * **GitHub Repo:** [https://github.com/humblepenguinn/mv](https://github.com/humblepenguinn/mv) * **Web App:** [https://humblepenguinn.github.io/mv/](https://humblepenguinn.github.io/mv/) P.S: I can't upload a video here, but you can find a demo of the tool in the repo README. https://redd.it/1ncnqvz @r_cpp

When maps map iterators are invalidated after insert. This issue surprised me today and it is related to reverse iterators. On the emplace reference page it is fairly clear: > No iterators or references are invalidated. Same with insert, with a caveat relating to node handles. But apparently, this does not apply to rend(): https://godbolt.org/z/zeTznKq6K Perhaps I am just ignorant of how map reverse iterators work but I've never picked up on this before. It was actually debugging in MSVC which led me to it and wouldn't allow the comparison ritr == map.rend() at all, so is it actually UB? https://redd.it/1ncn921 @r_cpp

Practical CI-friendly Performance Tests https://solidean.com/blog/2025/practical-performance-tests/ https://redd.it/1nclq2t @r_cpp

Clang 16 on Ubuntu 22.04 fails to run (missing libtinfo.so.5) — need a solution without upgrading or installing libtinfo5 Hey folks, I’m maintaining a C++ project that currently builds with inbuilt Clang 16. We tried upgrading to Clang 21, but there are way too many build errors, so upgrading isn’t an option right now. The issue is that when running Clang 16 on Ubuntu 22.04, I get this error (clang: error while loading shared libraries: libtinfo.so.5: cannot open shared object file: No such file or directory). Ubuntu 22.04 only ships libtinfo6, and my client doesn’t want to install the older libtinfo5 package on their build machine. I need to keep Clang 16 but also make it work without installing libtinfo5. Has anyone solved this cleanly? Thanks in advance! https://redd.it/1ncelpd @r_cpp

Why we need C++ Exceptions https://abuehl.github.io/2025/09/08/why-exceptions.html https://redd.it/1ncb3qy @r_cpp

Why the hate for memory safety? Hi, I'm coming from rust and I just recently heard the news about how C++ is considering memory safety, yet from my observation c++ doesn't want it. I'm a little perplexed by this, isn't the biggest ( probably dangerous) feature of c++ is the danger of memory leaks and such. Wouldn't that fix or make c++ objective better? https://redd.it/1nbzpj3 @r_cpp

New C++ Conference Videos Released This Month - September 2025 **C++Now** 2025-09-01 - 2025-09-07 * How to Build a Flexible Robot Brain One Bit at a Time - Ramon Perez - [https://youtu.be/akJznI1eBxo](https://youtu.be/akJznI1eBxo) * Zngur - Simplified Rust/C++ Integration - David Sankel - [https://youtu.be/k\_sp5wvoEVM](https://youtu.be/k_sp5wvoEVM) * Advanced Ranges - Writing Modular, Clean, and Efficient Code with Custom Views - Steve Sorkin - [https://youtu.be/5iXUCcFP6H4](https://youtu.be/5iXUCcFP6H4) **ACCU Conference** 2025-09-01 - 2025-09-07 * The Hidden Techical Debt Crisis: When Non-Engineers Write Code - Felix Aldam-Gates - [https://youtu.be/VXb4n8FjcrE](https://youtu.be/VXb4n8FjcrE) * The 10 Essential Features for the Future of C++ Libraries - Mateusz Pusz - [https://youtu.be/K-uzaG9S8bg](https://youtu.be/K-uzaG9S8bg) * An Introduction To Go - Dom Davis - [https://youtu.be/l36Wqmw2JZo](https://youtu.be/l36Wqmw2JZo) **C++ on Sea** 2025-09-01 - 2025-09-07 * Welcome to v1.0 of the meta::\[\[verse\]\]! - Inbal Levi - [https://youtu.be/Wbe09UFDvvY](https://youtu.be/Wbe09UFDvvY) * To Err is Human - Robust Error Handling in C++26 - Sebastian Theophil - [https://youtu.be/A8arWLN54GU](https://youtu.be/A8arWLN54GU) * The 10 Essential Features for the Future of C++ Libraries - Mateusz Pusz - [https://youtu.be/TJg37Sh9j78](https://youtu.be/TJg37Sh9j78) **ADC** 2025-09-01 - 2025-09-07 * Current Approaches and Future Possibilities for Inter Audio Plugin Communication - Janos Buttgereit - [https://youtu.be/YHWdDLi6jgc](https://youtu.be/YHWdDLi6jgc) * Keynote: Sonic Cartography - Navigating the Abstract Space-Time of Sound - Carla Scaletti - [https://youtu.be/iq75B8EkLv4](https://youtu.be/iq75B8EkLv4) https://redd.it/1nbrhjg @r_cpp

Entry Level Jobs Hi, I’m a final-year bachelor’s student from India, and I’m trying to figure out how to look for entry-level C++ roles. My C++ knowledge is decent for a college student, though I know I still have a lot to improve. I’m learning and practicing every day, but I feel stuck when it comes to finding jobs or internships. https://redd.it/1nbnaem @r_cpp

MapLibre Native (C++ SDK) now supports embedding into Slint apps Thanks to yuiseki, there's now an official Slint integration available for MapLibre Native, the open-source C++ library for displaying maps. This means you can now embed MapLibre rendering directly into Slint based native GUI apps. The integration captures MapLibre Native rendered frames and presents them inside Slint UI components. The current MapLibre + Slint integration includes platform support for Windows, macOS, and Linux. Check out the GitHub repo - https://github.com/maplibre/maplibre-native-slint https://redd.it/1nbn2hl @r_cpp

Seq Library v2 release Hi everyone,   The version 2 of the seq library has been released at https://github.com/Thermadiag/seq Seq is a (now header-only) C++17 library providing original STL-like containers and related tools like: \-          seq::flat_set/map: An ordered flat map similar to std::flat_map or boost::container::flat_map, but with fast insertion/deletion of single elements. \-          seq::radix_set/map: ordered map using a Burst Trie derivative with (usually) very fast performances for all types of workload. \-          seq::radix_hash_set/map: radix-based hash map with incremental rehash and low memory footprint. \-          seq::ordered_set/map: hash map that preserves insertion order with stable references/iterators. \-          seq::concurrent_set/map: highly scalable concurrent hash map with an interface similar to boost::concurrent_flat_map (and increased performances according to my benchmarks). \-          Random-access containers: seq::devector and seq::tiered_vector. \-          seq::tiny_string: relocatable string-like class with customizable SSO. Feel free to try/share/comment/correct! Bests https://redd.it/1nbiwie @r_cpp