//public static Middleware<RR> SelectMany<T, R, RR>
// (this Middleware<T> @this, Func<T, Middleware<R>> f, Func<T, R, RR> project)
// => cont => @this(t => f(t)(r => cont(project(t, r))));
public static Middleware <RR> SelectMany <T, R, RR>
(this Middleware <T> @this, Func <T, Middleware <R> > f, Func <T, R, RR> project)
{
return(new Middleware <RR>(cont =>
{
return (dynamic)@this.Invoke(t => { return (dynamic)f.Invoke(t).Invoke(r => cont.Invoke(project.Invoke(t, r))); });
}));
}
//public static Middleware<R> Select<T, R>
// (this Middleware<T> mw, Func<T, R> f)
// => cont => mw(t => cont(f(t)));
public static Middleware <R> Select <T, R>
(this Middleware <T> mw, Func <T, R> f)
{
return(new Middleware <R>(cont =>
{
return mw.Invoke(new Func <T, dynamic>(t => cont.Invoke(f.Invoke(t))));
}));
}
// cand definesc o variabila un delegate Middleware<T> = definesc o metoda care primeste ca parametru un Func<T, dynamic> delegate si corpul executiei ei
// cand invoc un delegate Middleware<T> = definesc functia care primeste un T si intoarce un dynamic, altfel spus specific parametrii/argumetele lui Middleware<T>,
// altfel spus instantiez delegat-ul Func<T, dynamic>
//public static Middleware<R> SelectMany<T, R>
// (this Middleware<T> mw, Func<T, Middleware<R>> f)
// => cont => mw(t => f(t)(cont));
public static Middleware <R> SelectMany <T, R>
(this Middleware <T> mw, Func <T, Middleware <R> > f)
{
return(new Middleware <R>(cont => { return (dynamic)mw.Invoke(new Func <T, dynamic>(t => f.Invoke(t).Invoke(cont))); }));
}
