NSSet and NSDictionary, along with NSArray are the workhorse collection classes of Foundation. Unlike other standard libraries, implementation details are hidden from developers, allowing them to write simple code and trust that it will be (reasonabl…
Temporary tables are created in tempdb. The name "temporary" is slightly misleading, for even though the tables are instantiated in tempdb and backed by physical disk and are even logged into the transaction log. They act like regular tables i…
drop后的表被放在回收站(user_recyclebin)里,而不是直接删除掉.这样,回收站里的表信息就可以被恢复,或彻底清除. 1.通过查询回收站user_recyclebin获取被删除的表信息,然后使用语句flashback table <user_recyclebin.object_name or user_recyclebin.original_name> to before drop [rename to <new_table_name>]; 将回收站里的表恢复为原名称…
lua中打印所以类型功能实现 本人測试 number.string.bool.nil.table嵌套table.userdata没问题 共享一下有什么问题请拍砖 代码例如以下 cclog = function( ... ) local tv = "\n" local xn = 0 local function tvlinet(xn) -- body for i=1,xn do tv = tv.."\t" end end local function printTab…
现在有一个使用mybatis的分页插件生成的table,table中数据是通过vue获得的 , 前台显示使用<tr v-for="item in items"> 后台vue获取数据使用分页插件进行查询然后使用回调,将结果返回给vue的一个model /** * 分页控件加载 * @param data */ function aspnetPagerInfoIM(pageDataShow,pageModule,resource, modelCallBack) { var pa…
