How do I migrate legacy code to C++17?

Migrating legacy code to C++17 involves several steps to ensure compatibility and leverage the new features introduced in this version. Here are some key points and examples to consider during the migration process:

Begin by assessing the existing codebase to identify parts that can benefit from C++17 features, such as `std::optional`, `std::variant`, and improved initialization capabilities. Focus on replacing deprecated or outdated practices with modern equivalents.

Additionally, ensure that your build system is updated to support C++17. Most compilers, including GCC and Clang, have full support for C++17, so updating to the latest version will be beneficial.

        // Example: Using std::optional to handle optional values
        #include <optional>

        std::optional findValue(bool condition) {
            return condition ? std::make_optional(42) : std::nullopt;
        }

        // Usage
        auto result = findValue(true);
        if (result) {
            // Do something with *result
        }