executor_binder::first_argument

The type of the function's first argument.

typedef see_below first_argument_type;

The type of first_argument_type is based on the type T of the wrapper's target object:

if T is a pointer to a function type accepting two arguments, first_argument_type is a synonym for the return type of T;
if T is a class type with a member type first_argument_type, then first_argument_type is a synonym for T::first_argument_type;
otherwise first_argument_type is not defined.

Header: asio/bind_executor.hpp

Convenience header: asio.hpp