Hi,

I see on the AdAddendum A19 that you remove the operator= on some class (for example, here, page 86):

struct ClassAValveParameters
{
ClassAValveParameters() {}
ClassAValveParameters& operator=()
(removed here)

which should be written as (typo?):

struct ClassAValveParameters
{
ClassAValveParameters() {}
ClassAValveParameters &operator=(const ClassAValveParameters &obj);
(removed here)

right?

But why? When I'll set parameters, it fill fails and Linker stop the execution:

void ClassAValve::SetParamerers(ClassAValveParameters _parameters) {
    parameters = _parameters;
}

saying "undefined reference to `ClassAValveParameters::operator=(ClassAValveParameters const&)'"

Maybe you can clarify this to me? Thanks