public static IEnumerable <TResult> SelectMany <TSource, TResult>(
this IEnumerable <TSource> source,
Func <TSource, int, IEnumerable <TResult> > selector)
{
if (source == null)
{
throw new ArgumentNullException("source");
}
if (selector == null)
{
throw new ArgumentNullException("selector");
}
return(new ConsumableSelectMany <TResult, TResult, TResult>(Consumable.Select(source, selector), IdentityTransform <TResult> .Instance, IdentityTransform <TResult> .Instance));
}
public static IEnumerable <TResult> Select <TSource, TResult>(
this IEnumerable <TSource> source,
Func <TSource, int, TResult> selector)
{
return(Consumable.Select(source, selector));
}