AcornPublishing_essential-csharp-7e/EssentialCSharp-8.0/src/Chapter13/Listing13.04.FuncAndActionDelegateDeclarations.cs
namespace AddisonWesley.Michaelis.EssentialCSharp.Chapter13.Listing13_04
{
    //public delegate void Action();
    //public delegate void Action<in T>(T arg);
    //public delegate void Action<in T1, in T2>(
    //    T1 arg1, T2 arg2);
    //public delegate void Action<in T1, in T2, in T3>(
    //    T1 arg1, T2 arg2, T3 arg3);
    //public delegate void Action<in T1, in T2, in T3, in T4>(
    //    T1 arg1, T2 arg2, T3 arg3, T4 arg4);

    // ...

    //public delegate void Action<
    //    in T1, in T2, in T3, in T4, in T5, in T6, in T7, in T8,
    //    in T9, in T10, in T11, in T12, in T13, in T14, in T15, in T16>(
    //        T1 arg1, T2 arg2, T3 arg3, T4 arg4,
    //        T5 arg5, T6 arg6, T7 arg7, T8 arg8,
    //        T9 arg9, T10 arg10, T11 arg11, T12 arg12,
    //        T13 arg13, T14 arg14, T15 arg15, T16 arg16);

    //public delegate TResult Func<out TResult>();
    //public delegate TResult Func<in T, out TResult>(T arg);
    //public delegate TResult Func<in T1, in T2, out TResult>(
    //    T1 arg1, T2 arg2);
    //public delegate TResult Func<in T1, in T2, in T3, out TResult>(
    //    T1 arg1, T2 arg2, T3 arg3);
    //public delegate TResult Func<in T1, in T2, in T3, in T4,
    //    out TResult>(T1 arg1, T2 arg2, T3 arg3, T4 arg4);

    // ...

    //public delegate TResult Func<
    //    in T1, in T2, in T3, in T4, in T5, in T6, in T7, in T8,
    //    in T9, in T10, in T11, in T12, in T13, in T14, in T15, in T16,
    //    out TResult>(
    //        T1 arg1, T2 arg2, T3 arg3, T4 arg4,
    //        T5 arg5, T6 arg6, T7 arg7, T8 arg8,
    //        T9 arg9, T10 arg10, T11 arg11, T12 arg12,
    //        T13 arg13, T14 arg14, T15 arg15, T16 arg16);

    // public delegate bool Predicate<in T>( T obj)
}