// DATA DEFINITION for a blah:
/*
    a blah is a class:
        new blah(data_field_type data_field, etc )
    ...representing a blah with:
        a data_field that is ...,
*/

/* a template for function that expects a blah parameter a_blah:

ret_type process_blah(blah a_blah)
{
    return ... a_blah.get_data_field() ...
                                       ... ;
}
*/

#include "blah.h"
using namespace std;

//--------------------
// constructor(s)

blah::blah(type a_data_field, )
{
    data_field = a_data_field;
    
}

//--------------------
// selectors

type blah::get_data_field() const
{
    return data_field;
}