Translate C++ to D

[Luca Lupo]

So, I have converted the -> with the . , but I must make this also for:
example:

Observer::~this(){} ??? :: no, but .??

And Exit the cout in D?? or I must import some library??

Thanks

//Observer.d

import std.string;
import Subject

Observer::~this() //distructor for observer
{}

Observer::this() // costructor for observer
{}

SubscriberG::this(string a) //contructor for subscriberG
{indirizzo_e_mail_G = a;}

SubscriberS::this(string a,string b) //contructor for subscriberS
{
    indirizzo_e_mail_S = a;
    name_author = b;
}


void Observer::Update(Subject* b) //it's equal? for me yes!
{}

void Subscriber::Update(Subject* b) //it's equal? for me yes!
{}

void SubscriberS::Update(Subject* b) //Help??
{
    if(name_author == ((Blog *)b).GetAuthor()){
cout<<"Subscriber tipo S->"<<"Name blog: "<<((Blog *)b).GetName()<<endl;
((Blog *)b).GetTitle();
((Blog *)b).GetText();
cout<<"Autore Ultimo Post :"<<((Blog *)b).GetAuthor();
                                               }
cout<<endl<<endl;
}

void SubscriberG::Update(Subject* b) //Help??
{
cout<<"Subscriber tipo G->"<<"Name blog: "<<((Blog *)b).GetName()<<endl;
((Blog *)b).GetTitle();
((Blog *)b).GetLine();
cout<<"Autore Ultimo Post :"<<((Blog *)b).GetAuthor();
cout<<endl<<endl;
}