namespace System.Linq
{
    // 摘要:
    //     提(ti)供一(yi)組用于查詢實(shi)現 System.Collections.Generic.IEnumerable<T> 的(de)對象的(de) static（在(zai) Visual
    //     Basic 中(zhong)為 Shared）方法。
    public static class Enumerable
    {
       
        public static TSource Aggregate<TSource>(this IEnumerable<TSource> source, Func<TSource, TSource, TSource> func);
        
        public static TAccumulate Aggregate<TSource, TAccumulate>(this IEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, TAccumulate> func);
        
        public static TResult Aggregate<TSource, TAccumulate, TResult>(this IEnumerable<TSource> source, TAccumulate seed, Func<TAccumulate, TSource, TAccumulate> func, Func<TAccumulate, TResult> resultSelector);
       
        public static bool Any<TSource>(this IEnumerable<TSource> source);
        
        public static bool Any<TSource>(this IEnumerable<TSource> source, Func<TSource, bool> predicate);

 　　　 /// <summary>
        /// 按或進行位運算
        /// 作者：倉儲大(da)叔(shu)
        /// </summary>
        /// <typeparam name="TSource"></typeparam>
        /// <param name="source"></param>
        /// <param name="selector"></param>
        /// <returns></returns>
        public static int BinaryOr<TSource>(this IEnumerable<TSource> source, Func<TSource, int> selector)
        {
            int result = 0;
            foreach (var item in source)
            {
                result |= selector(item);
            }
            return result;
        }