Struct callable

boost::proto::callable — Base class for callable PolymorphicFunctionObjects

Synopsis

// In header: <boost/proto/proto_fwd.hpp>


struct callable {
};

When defining a callable PolymorphicFunctionObject, inherit from proto::callable so that it can be used to create a CallableTransform.

proto::is_callable<T>::value is true for types that inherit from proto::callable.