public bool MoveNext()
{
if (current == null)
{
current = first;
}
else
{
current = current.Tail;
}
return(!current.IsEmpty);
}
public override void Because()
{
list = Nil <string> .Instance + "blah" + "Jubbins" + "Your more general gubbins";
list2 = SList.apply("Your more general gubbins", "Jubbins", "blah");
}
public NonEmptySList(T value, SList <T> next)
{
this.value = value;
this.next = next;
length = next.Length + 1;
}
public static Option <NonEmptySList <T> > unapply <T>(SList <T> list)
{
return(list.IsEmpty ? Option.None() : Option.Some((NonEmptySList <T>)list));
}
public void Reset()
{
current = null;
}
public SListEnumerator(SList <T> first)
{
this.first = first;
}
/// <summary>
/// Prepends the other to this until the other SList is Nil
/// </summary>
/// <param name="other"></param>
/// <returns>NonEmptySList<T></returns>
private NonEmptySList <T> prependWith(SList <T> other)
{
//i think this construct will allow tail call optimisation in .net 4.0
//http://stackoverflow.com/questions/491376/why-doesnt-net-c-optimize-for-tail-call-recursion
return(other.Length == 0 ? this : Prepend(other.Head).prependWith(other.Tail));
}