问题现象: 在mongodb执行批量查询操作时,抛出异常 Exception 2: $in needs an array. 问题解决: 感谢伟大的 google 和 stackoverflow 有人遇到过该问题,问题的原因解释得很清楚,偷个懒,直接 copy 过来,如下: This... is a change in MongoDB 2.6.0, no longer accepting bson object in the $in clause. This particular issue is…
一.Array 1 .创建数组的方式 //Array构造函数(可以去掉new) var colors0 = new Array(); var colors1 = new Array(20); var colors3 = new Array("red","blue","green"); //数组字面量 var colors4 = ["red","blue","green"]; var co…
太神了,被数学题虐了 orz http://m.blog.csdn.net/blog/skywalkert/43970331 这道题关键是抓住m较小的特点,构造递推解决 ; ..,..] of longint; f:..] of int64; i,j,n,m:longint; t,ch:int64; function quick(x:int64;y:longint):int64; begin quick:=; do begin = then quick:=quick*x mod mo; y:=y…