//default of bark
public void speak(string whatToSay = "bark")
{
//TODO...
//only raise event if event is not null
HasSpoken?.Invoke(this, EventArgs.Empty);
/*
* simplified version of this
* if(HasSpoken != null)
* HasSpoken(this, EventArgs.Empty);
*/
}
// Method signature = scope + return type + name + parameter types
public void Speak(string what = "bark")
{
// If no subscribers are registered to handle event, null reference exception is thrown.
HasSpoken?.Invoke(this, EventArgs.Empty);
}
