public void Undo()
{
if (receiver == null)
{
Console.WriteLine($"No receiver supplied to {nameof(SubtractCommand)}");
return;
}
receiver.Add(value);
Log();
}
public void Execute()
{
if (receiver == null)
{
Console.WriteLine($"No receiver supplied to {nameof(AddCommand)}");
return;
}
Log();
receiver.Add(value);
}
public void Execute()
{
switch (_operation)
{
case Operation.Add:
_receiver.Add(_value);
break;
case Operation.Subtract:
_receiver.Subtract(_value);
break;
case Operation.Multiply:
_receiver.Multiply(_value);
break;
case Operation.Divide:
_receiver.Divide(_value);
break;
}
}