C++ Conversion operators


You can overload type operators, so that your type can be implicitly converted into the specified type.

The conversion operator must be defined in a class/struct:

operator T() const { /* return something */ }

Note: the operator is const to allow const objects to be converted.


struct Text
    std::string text;

    // Now Text can be implicitly converted into a const char*
    /*explicit*/ operator const char*() const { return text.data(); }
    // ^^^^^^^
    // to disable implicit conversion

Text t;
t.text = "Hello world!";

const char* copyoftext = t;