January 01, 2003
Multithreaded Programming with the Command Pattern
Listing 4 The Command pattern
#include <iostream>
// base command class
class Command
{
public:
Command () {}
~Command () {}
// the actual command logic resides in Execute ()
virtual void Execute () = 0;
};
class Command_A : public Command
{
public:
Command_A () {}
~Command_A () {}
void Execute () { std::cout << "Doing some work" << std::endl; }
};
class Command_B : public Command
{
public:
Command_B () {}
~Command_B () {}
void Execute () { std::cout << "Doing some other work" << std::endl; }
};
int main ()
{
Command_A a;
Command_B b;
Command* Commands[ 2 ];
Commands[ 0 ] = &a;
Commands[ 1 ] = &b;
Commands[ 0 ]->Execute ();
Commands[ 1 ]->Execute ();
return ( 0 );
}
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