public static IEnumerable <TResult> SelectMany <TResult>(this Range range, Func <int, Range> fun1, Func <int, int, TResult> fun2)
{
foreach (var s in range.AsEnumerable())
{
var range2 = fun1(s);
foreach (var t in range2.AsEnumerable())
{
yield return(fun2(s, t));
}
}
}
public static IEnumerable <TResult> Select <TResult>(this Range range, Func <int, TResult> selector)
{
return(range.AsEnumerable().Select(selector));
}
public static IEnumerable <TResult> Cast <TResult>(this Range range)
{
return(range.AsEnumerable().Cast <TResult>());
}
public static IEnumerator <int> GetEnumerator(this Range range)
{
return(range.AsEnumerable().GetEnumerator());
}
public static void Add(this ICollection <int> collection, Range range)
{
collection.Add(range.AsEnumerable());
}
public static IEnumerable <int> ToArray(this Range range) => range.AsEnumerable().ToArray();
public static IEnumerable <TResult> SelectMany <TCollection, TResult>(this Range range, Func <int, IEnumerable <TCollection> > fun1, Func <int, TCollection, TResult> fun2)
{
return(Enumerable.SelectMany <int, TCollection, TResult>(range.AsEnumerable(), fun1, fun2));
}
public static IEnumerable <TResult> SelectMany <TResult>(this Range range, Func <int, IEnumerable <TResult> > fun)
{
return(range.AsEnumerable().SelectMany(fun));
}
public static IEnumerable <int> Where(this Range range, Func <int, bool> fun)
{
return(range.AsEnumerable().Where(fun));
}
public static IEnumerable <int> Select(this Range range, Func <int, int> fun)
{
return(range.AsEnumerable().Select(fun));
}
public static IEnumerable <int> Take(this Range range, int n)
{
return(range.AsEnumerable().Take(n));
}
/// <summary> /// Range GetEnumerator method, allows foreach over a range as long as the indices are not from the end /// </summary> /// <param name="range">Range to get the Enumerator for</param> /// <returns>An enumerator over the entire range</returns> /// <exception cref="ArgumentException">If any of the indices are marked as from the end</exception> public static IEnumerator <int> GetEnumerator(this Range range) => range.AsEnumerable().GetEnumerator();