C++ - Reddit

In Defense of C++ https://dayvster.com/blog/in-defense-of-cpp/ https://redd.it/1ngssjn @r_cpp

Resources for learning about the C++ memory model and memory ordering in general Hi. I’ve watched Herb Sutter’s Atomic Weapons lectures, read C++ Concurrency in Action, and gone through a few blog posts, but I still don’t feel I fully understand concepts like sequential consistency and memory ordering. Are there any other resources that explain these topics more clearly? https://redd.it/1ngqs6m @r_cpp

non compatibility of msvc with ninja?? hey, so im working on a project, my setup is msvc for compiler and vs code for coding (with clangd and cmake extensions). the problem is intellisense, msvc by default generates sln and vcxproj files which are useless (as far as ik) for intellisense in vs code. then i used ninja for generating compile_command.json and it was working perfectly until i changed c++ version to 23 and used its features like `std::expected` and `std::optional`, the compile_command.json file does not contain anything for expected and optional so intellisense doesn't work (but the code gets compiled without any errors) but then i was advised to change compiler to clang for c and clang++ for cpp and generate compile_command.json, now the code doesnt compile but i do get the compile_command.json, then i change back to msvc and use the clang compile_command.json. but the problem here is intellisense picks up files from mingw folder and sometimes the definitions are different or wrong all together. is there anything that can be done? {   "directory": "redacted/build-x8664-windows",   "command": "redacted\\toolchain\\VC\\Tools\\MSVC\\14.44.35207\\bin\\Hostx64\\x64\\cl.exe  /nologo /TP -Iredacted\\lib -Iredacted\\vendor\\imgui -Iredacted\\vendor\\imgui\\backends -Iredacted\\vendor\\cppcoro\\include /DWIN32 /DWINDOWS /W3 /GR /EHsc /MDd /Zi /Ob0 /Od /RTC1 -std:c++latest /std:c++latest /permissive- /Zc:cplusplus /FoCMakeFiles\\t1.dir\\test\\t1.cpp.obj /FdCMakeFiles\\t1.dir\\ /FS -c redacted\\test\\t1.cpp",   "file": "redacted\\test\\t1.cpp",   "output": "CMakeFiles\\t1.dir\\test\\t1.cpp.obj" } {   "directory": "redacted/build-x8664-windows",   "command": "redacted\\toolchain\\VC\\Tools\\MSVC\\14.44.35207\\bin\\Hostx64\\x64\\cl.exe  /nologo /TP -Iredacted\\lib -Iredacted\\vendor\\imgui -Iredacted\\vendor\\imgui\\backends -Iredacted\\vendor\\cppcoro\\include /DWIN32 /DWINDOWS /W3 /GR /EHsc /MDd /Zi /Ob0 /Od /RTC1 -std:c++latest /std:c++latest /permissive- /Zc:cplusplus /FoCMakeFiles\\t1.dir\\test\\t1.cpp.obj /FdCMakeFiles\\t1.dir\\ /FS -c redacted\\test\\t1.cpp",   "file": "redacted\\test\\t1.cpp",   "output": "CMakeFiles\\t1.dir\\test\\t1.cpp.obj" } this is a part of compile_command.json generated by msvc {   "directory": "redacted/build-x8664-windows",   "command": "redacted\\clang++.exe -Iredacted/vendor/imgui -Iredacted/vendor/imgui/backends -std=gnu++23 -o CMakeFiles\\libimgui.dir\\vendor\\imgui\\imguidraw.cpp.obj -c redacted\\vendor\\imgui\\imguidraw.cpp",   "file": "redacted\\vendor\\imgui\\imguidraw.cpp",   "output": "CMakeFiles\\libimgui.dir\\vendor\\imgui\\imguidraw.cpp.obj" } {   "directory": "redacted/build-x8664-windows",   "command": "redacted\\clang++.exe -Iredacted/vendor/imgui -Iredacted/vendor/imgui/backends -std=gnu++23 -o CMakeFiles\\libimgui.dir\\vendor\\imgui\\imguidraw.cpp.obj -c redacted\\vendor\\imgui\\imguidraw.cpp",   "file": "redacted\\vendor\\imgui\\imguidraw.cpp",   "output": "CMakeFiles\\libimgui.dir\\vendor\\imgui\\imguidraw.cpp.obj" } this is a part of compile_command.json generated by clang https://redd.it/1ngnjuq @r_cpp

Safe C++ proposal is not being continued https://sibellavia.lol/posts/2025/09/safe-c-proposal-is-not-being-continued/ https://redd.it/1ngjemb @r_cpp

Seeking experiences: Best C++ project starter among four popular templates? I’m choosing a C++ project template and want real-user feedback on these: friendlyanon/cmake-init, TheLartians/ModernCppStarter, filipdutescu/modern-cpp-template, cginternals/cmake-init. Please share quick pros/cons, cross-platform experience, CMake quality, CI/tooling, and whether you’d use it for production. Thanks! https://redd.it/1nghsy7 @r_cpp

cppreference missing filter by standard? There used to be a very useful feature on cppreference where you could specify a standard version and the API would be filtered to represent the state at exactly that standard. No more (constexpr since C++20) or (until C++17) etc etc. Is this gone or am I just missing something? It was a very useful feature to filter out unhelpful info about other standards when I'm focused on exactly one. https://redd.it/1nfywfj @r_cpp

Why can't std::apply figure out which overload I intend to use? Only one of then will work! https://devblogs.microsoft.com/oldnewthing/20250911-00/?p=111586 https://redd.it/1nfqbv6 @r_cpp

manual clang prebuilt install So I needed to install a specific version of clang llvm on my debian system. https://releases.llvm.org/download.html#7.0.1 but I had no idea what to actually do... So I tried some things. first I installed them as the usual /usr/include lib bin etc but that wasn't right so I installed it to /usr/lib/clang/VER/ but for some reason it doesnt look in /usr/lib/clang/VER/include/c++/v1/ like I have no idea I hate this... so I copied everything there into /usr/include, then I heard that I somehow didn't have the glibc headers (apt doesnt work btw) and I extracted the include from the glibc source code into /usr/include but still doesnt workkkkkkk In file included from <stdin>:1: In file included from /usr/include/vector:269: In file included from /usr/include/iosfwd:90: /usr/include/wchar.h:2:11: fatal error: 'wcsmbs/wchar.h' file not found \# include <wcsmbs/wchar.h> \^\~\~\~\~\~\~\~\~\~\~\~\~\~\~\~ 1 error generated.   https://redd.it/1nf4abc @r_cpp

I want something like Python's uv for c++ uv for Python is a package and project manager. It provides a single tool to replace multiple others like pip, venv, pip-tools, pyenv and other stuff. Using uv is straightforward: uv run myscript.py And you're done. Uv takes care of the dependencies (specified as a comment at the beginning of the py file), the environment, even the Python version you need. It's really a no-bullshit approach to Python development. I dream of something like that for C++. No more drama with cmake, compiler versions not being available on my OS, missing dependencies, the quest for libstdc++/glibc being to old on Linux that I never fully understood... I'm a simple man, let me dream big 😭 https://redd.it/1nf1lga @r_cpp

is Clion good? hi, just wanted to ask if Clion from jetbrains is anygood as an ide and if you would suggest any others. im completely new to C++ and wanted to ask which IDEs people tend to use ( I am not new to programming and usually code in Python and C # , and i use the JetBrains IDEs for those since I get them for free as a student) https://redd.it/1nezaoh @r_cpp

Pattern matching for modern C++ Hey guys! I wrote a header-only lib provides pattern matching support for C++. Anyone interested? Link here: https://github.com/sentomk/patternia https://redd.it/1nez4v1 @r_cpp

cppstat - C++ Compiler Support Status https://cppstat.dev/ https://redd.it/1nexqz9 @r_cpp

simdjson Version 4.0.0 Released https://github.com/simdjson/simdjson/releases/tag/v4.0.0 https://redd.it/1netob0 @r_cpp

Guide: C++ Instrumentation with Memory Sanitizer https://systemsandco.dev/2025/07/31/msan.html https://redd.it/1nej0nj @r_cpp

Another month, another WG21 ISO C++ Mailing https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2025/#mailing2025-09 https://redd.it/1neg2js @r_cpp

Learncpp.com fixed https://s4qc.github.io/blogs/LearnCppFixed/ https://redd.it/1ne7iwy @r_cpp

C++ Memory Management • Patrice Roy & Kevin Carpenter https://youtu.be/ehuYrQvFcFg https://redd.it/1necrl7 @r_cpp

Parallel C++ for Scientific Applications: Development Environment https://www.youtube.com/watch?v=ORU5G2u2BuE https://redd.it/1ne9bb4 @r_cpp

Store complex structures into a binary file Hello! I have these hypothetical structures: typedef struct character{ unsigned int id; std::array<char, 256> name; std::vector<int> factions_id; std::vector<skill> skills; } character; typedef struct skill{ std::array<char, 256> name; float cooldown; } skill; How do I store a character into a binary file? I tried to convert the character to bytes and store it directly but researching I found out that vector does not "have" the raw data. Thank you for your time! https://redd.it/1nea1nd @r_cpp

Here is a minimalist tickle for your fancy ... ... stripped from an old project (hope I got formatting right). # -*- mode: Makefile; -*- OSNAME := $(shell uname) WARNFLAGS = CXXFLAGS = -g -O -std=c++23 $(WARNFLAGS) CPPFLAGS = -I. -I.. LDFLAGS = LIBS = DEPENDDIR = ./.deps DEPENDFLAGS = -M SRCS := $(wildcard *.cc) OBJS := $(patsubst %.cc,%.o,$(SRCS)) TARGETS = someprog all: $(TARGETS) DEPS = $(patsubst %.o,$(DEPENDDIR)/%.d,$(OBJS)) -include $(DEPS) $(DEPENDDIR)/%.d: %.cc $(DEPENDDIR) $(CXX) $(CXXFLAGS) $(CPPFLAGS) $(DEPENDFLAGS) $< >$@ $(DEPENDDIR): @[ ! -d $(DEPENDDIR) ] && mkdir -p $(DEPENDDIR) %: $(OBJS) $(CXX) $(LDFLAGS) -o $@ $^ $(LIBS) %.o: $(SRCS) $(CXX) $(CXXFLAGS) $(CPPFLAGS) -c $< -o $@ %: %.cc .PHONY: clean clean: rm -rf $(OBJS) $(TARGETS) $(DEPENDDIR) https://redd.it/1ne847u @r_cpp