How do I use in constexpr contexts std::variant in C++?

Learn how to use std::variant in constexpr contexts in C++. This guide provides examples and insights into leveraging std::variant for compile-time evaluations, enhancing type safety in your code.

std::variant, C++, constexpr, compile-time, type safety, C++17, programming example

<![CDATA[ #include #include constexpr std::variant getValue(bool flag) { return flag ? 42 : 3.14; } constexpr void printValue(std::variant v) { std::visit([](auto&& arg) { std::cout << arg << std::endl; }, v); } int main() { constexpr auto value1 = getValue(true); constexpr auto value2 = getValue(false); printValue(value1); printValue(value2); return 0; } ]]>

std::variant C++ constexpr compile-time type safety C++17 programming example

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