Test_v3

//+------------------------------------------------------------------+
//|                                                         test.mq5 |
//|                        Copyright 2019, MetaQuotes Software Corp. |
//|                                             https://www.mql5.com |
//+------------------------------------------------------------------+
#property copyright "Copyright 2019, MetaQuotes Software Corp."
#property link      "https://www.mql5.com"
#property version   "1.00"
//+------------------------------------------------------------------+
//| Script program start function                                    |
//+------------------------------------------------------------------+

#include <CDelegate.mqh>
  
void OnStart()
  {
   delegate(VOID,0) test1;
   delegate(VOID,2)<int,double> test2;
   delegate(OUT,0)<int> test3;
   delegate(OUT,2)<double,int,double> test4;
   test1+=Test1_1;
   test1+=Test1_2;
   test1+=Test1_3;
   test2+=Test2_1;
   test2+=Test2_2;
   test2+=Test2_3;
   test3+=Test3_1;
   test3+=Test3_2;
   test3+=Test3_3;
   test4+=Test4_1;
   test4+=Test4_2;
   test4+=Test4_3;
   Print(test1.Find(Test1_2));
   test1-=Test1_2;
   Print(test1.Find(Test1_2));
   test1.Invoke();
   test2.Invoke(3,5.0);
   Print(test3.Invoke());
   Print(test4.Invoke(2,2.5));
  }
//+------------------------------------------------------------------+
void Test1_1(){Print(__FUNCTION__);}
   
void Test1_2(){Print(__FUNCTION__);}
   
void Test1_3(){Print(__FUNCTION__);}

void Test2_1(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));}
   
void Test2_2(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));}
   
void Test2_3(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));}

int Test3_1(){Print(__FUNCTION__);return 1;}
   
int Test3_2(){Print(__FUNCTION__);return 2;}
   
int Test3_3(){Print(__FUNCTION__);return 3;}

double Test4_1(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));return a+b;}
   
double Test4_2(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));return a+b;}
   
double Test4_3(int a,double b){Print(__FUNCTION__+" sum="+string(a+b));return a+b;}