public int Add(int x, int y)
{
var sum = x + y;
if (sum % 5 == 0)
{
OnMultipleOfFiveReached?.Invoke(this, new MultipleOfFiveEventArgs(sum));
}
return(sum);
}
public int Add(int x, int y)
{
int iSum = x + y;
if ((iSum % 5 == 0) && (OnMultipleOfFiveReached != null))
{
OnMultipleOfFiveReached.Invoke();
}
return(iSum);
}
public event Action <int> OnMultipleOfFiveReached; //does it work without 'event' keyword? why do we use it?
public int Add(int x, int y)
{
var sum = x + y;
if (sum % 5 == 0)
{
OnMultipleOfFiveReached?.Invoke(sum);
}
/*
* obj?.method();
*
* is same as:
*
* if (obj != null)
* {
* obj.method();
* }
*/
return(sum);
}