boost::openmethod::virtual_boost_any

Alias for a virtual_any<boost::any>, in the default registry.

Synopsis

Declared in <boost/openmethod/interop/boost_any.hpp>

using virtual_boost_any = virtual_any<boost::any>;

Description

With another registry, use virtual_any<boost::any, Registry> directly.

The root class of the contained types is boost::any, distinct from the std::any root, so both may be used in the same program, and with the same registry.

Example

struct Dog {
    std::string name;
};

// `boost::any` is a root class of its own, distinct from the one used for
// `std::any`, so both may be used in the same program and registry.
BOOST_OPENMETHOD(name, (const virtual_boost_any&), std::string);

BOOST_OPENMETHOD_OVERRIDE(name, (const Dog& dog), std::string) {
    return dog.name + " the dog";
}

BOOST_OPENMETHOD_OVERRIDE(name, (const std::string& name), std::string) {
    return name;
}

virtual_boost_any felix = std::string("Felix the cat");

std::cout << name(felix) << "\n"; // Felix the cat

See Also

Interoperation with any

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