public static IPromise <IPromiseEnumerator <T> > Reverse <T>(IPromiseEnumerator <T> items)
{
return(items.MoveNext().Then(result =>
{
if (result == null)
{
return null;
}
return PromiseEnumerator.Create(items.Factory, new T[] { result.Current }).Then(right =>
{
return Reverse(result).Then(left =>
{
return (IPromiseEnumerator <T>)(ConcatEnumerator.Create(left, right));
});
});
}));
}
public static IPromiseEnumerator <T> Union <T>(IPromiseEnumerator <T> left, IPromiseEnumerator <T> right, IEqualityComparer <T> comparer)
{
return(DistinctEnumerator.Create(ConcatEnumerator.Create(left, right), comparer));
}
public static IPromiseEnumerator <T> Union <T>(IPromiseEnumerator <T> left, IPromiseEnumerator <T> right)
{
return(DistinctEnumerator.Create(ConcatEnumerator.Create(left, right)));
}