SomeProgrammer questions

• Why does using placement new on reference types give me a segmentation fault, even with std::launder?
• Using universal references with non template types?
• What is the point of c++20 ranges? [closed]
• How do I design a function with a strong exception guarantee?
• Passing r values by reference?
• Is the Rule of 5 (for constructors and destructors) outdated?

SomeProgrammer answers