/// <summary>
/// Applies an accumulator function over the values yielded from
/// a data-producer. The specified seed value
/// is used as the initial accumulator value, and the specified function is used
/// to select the result value
/// </summary>
/// <typeparam name="TSource">The type of data yielded by the data-source</typeparam>
/// <typeparam name="TAccumulate">The type to be used for the accumulator</typeparam>
/// <param name="func">Accumulator function to be applied to each term in the sequence</param>
/// <param name="seed">The initial value for the accumulator</param>
/// <param name="source">The data-source for the values</param>
public static IFuture <TAccumulate> Aggregate <TSource, TAccumulate>
(this IDataProducer <TSource> source,
TAccumulate seed,
Func <TAccumulate, TSource, TAccumulate> func)
{
return(source.Aggregate(seed, func, x => x));
}