Is it possible to use std::string in a constant expression? If your compiler implements std::string Small String Optimization (SSO), you can actually initialize a tiny string (up to size 15 on a 64bit platform) with constexpr, because obviously it does not allocate memory on heap
Understanding constexpr Specifier in C++ - GeeksforGeeks constexpr is a feature added in C++ 11 The main idea is a performance improvement of programs by doing computations at compile time rather than run time Note that once a program is compiled and finalized by the developer, it is run multiple times by users
Can You Use std::string in constexpr? C++11, GCC Error (Non-Trivial . . . This blog dives deep into the challenges of using `std::string` with `constexpr`, focusing on the infamous "non-trivial destructor" error in C++11 (especially with GCC), the evolution of `std::string` in subsequent standards, and practical alternatives for pre-C++20 codebases
How to use a constexpr std::string - Andreas Fertigs Blog Well, maybe you already explored what you can do with this new ability of std::string and discovered that the most naive application, creating a string at compile-time and transferring the data into run-time, isn't supported
5. 6 — Constexpr variables – Learn C++ - LearnCpp. com In this lesson, we’ll take a closer look at how we create variables that can be used in constant expressions in modern C++ We’ll also explore our first method for ensuring that code actually executes at compile-time
constexpr (C++) | Microsoft Learn The keyword constexpr was introduced in C++11 and improved in C++14 It means constant expression Like const, it can be applied to variables: A compiler error is raised when any code attempts to modify the value
C++23: Even more constexpr - Sandor Dargo’s Blog Ever since C++ introduced the constexpr keyword in C++11, each new standard brought us more and more opportunities to make our code increasingly constexpr, in other words, compile-time execution friendly In this article, we are going to review briefly what changes with C++23 on this front