static void TestInterfaceWidgets()
{
var w1 = new Widget();
w1.Print();
var aw = new AdvWidget();
aw.Print();
var sw = new SuperWidget();
sw.Print();
var widgets = new List <IPrintable>();
//IPrintable has one method called Print
widgets.Add(w1);
widgets.Add(aw);
widgets.Add(sw);
//inside the foreach loop, all it knows is Print
foreach (var widget in widgets)
{
widget.Print();
}
}
static void TestInterfaceWidgets()
{
var w1 = new Widget();
var aw = new AdvWidget();
var sw = new SuperWidget();
var widgets = new List <IPrintable>();
widgets.Add(w1);
widgets.Add(aw);
widgets.Add(sw);
foreach (var widget in widgets)
{
widget.Print();
}
}