array(2) { ["docs"]=> array(0) { } ["count"]=> int(0) } 111string(0) "" int(1) int(10) int(70) int(8640000) string(13) "likecs_art_db" array(1) { ["query"]=> array(1) { ["match_all"]=> object(stdClass)#28 (0) { } } } array(1) { ["createtime.keyword"]=> array(1) { ["order"]=> string(4) "desc" } } int(10) int(0) int(8640000) array(2) { ["docs"]=> array(0) { } ["count"]=> int(0) } lambda aggregation - 爱码网

lambda aggregation

            string centense = "a,b,c,d,e,f,,g";
            string [] names=centense.Split(',');
            string res= names.Aggregate((s1, s2) => s2 + "," + s1);
            Console.WriteLine(res);  //输出 g,,f,e,d,c,b,a