This is probably a s开发者_Python百科imple matter, but when I create a new object, the ID property starts off as 0 rather than null. As I understand it, SQLite takes/needs a value of null for the PK c
I am creating an application which involves so many web-service calls. I am using NSOperation to execute the web-service calls. There are several views in the application and I\'m calling the web-serv
目录Redis简介Redis有几种数据类型Redis的基本指令String(字符串)List(列表)Set(集合)Hash(哈希)Zset(sorted set:有序集合)RedisDesktopManager数据查看工具Redis简介