public void _0001_CastItemToEnumerable()
{
IPersonCollection pc = new PersonCollection();
pc.Add(new PersonItem("Simpson", "Homer"));
pc.Add(new PersonItem("Simpson", "Bart"));
pc.Cast <IPersonItem>().FirstOrDefault(n => n.First == "Simpson");
}
public void _0002_CastItemToEnumerable()
{
IPersonCollection pc = new PersonCollection();
pc.Add(new PersonItem("Simpson", "Homer"));
pc.Add(new PersonItem("Simpson", "Bart"));
IEnumerable <IPersonItem> x;
x = new List <IPersonItem>();
foreach (var item in x)
{
}
pc.Cast <IPersonItem>().FirstOrDefault(n => n.First == "Simpson");
}