...档中相关说明。 MySQL需要多个表，多次查询才能搞定的问题，MongoDB只需要一个表，一次查询就能搞定，对比完成，相对MySQL而言，MongoDB显得更胜一筹，至少本例如此 MySQL MongoDB

...set storage_engine=MYISAM 这里仅记录相关步骤，期间遇到任何问题可在右侧搜索框搜索相关解决方案。Linux MySql 编译安装

...报错，且不能通过编译。这样就避免了前面讲的类型安全问题与装箱拆箱的性能问题了。 总结： 数组的容量是固定的，您只能一次获取或设置一个元素的值，而ArrayList或List<T>的容量可根据需要自动扩充、修改、删除或插入数...

...As of jQuery 1.5, the Deferred object provides a way to register multiple callbacks into self-managed callback queues, invoke callback queues as appropriate, and relay the success or failure state of any synchronous or asynchronous function. Deferred Methods: deferred.done() Add handlers to be cal...

...文章中，也许可以找到你想了解的大数据行业创业环境、问题、机会与方向。大数据不仅仅是一个营销词汇，在这篇干货满满的文章里，作者用数据告诉我们，究竟什么是大数据，大数据行业的创业机会如何，未来的创业方向又...

... max_allowed_packet is set in mysql config, not on php side [mysqld] max_allowed_packet=16M You can see it's curent value in mysql like this: SHOW VARIABLES LIKE 'max_allowed_packet'; You can try to change it like this, but it's unlikely this will work on shared hostin...

...oop, then you need to prepend an ampersand to your enumeration variable to allow write access. – FreeAsInBeer Jul 30 '12 at 21:20 1 ...

I want to automate a fairly simple task. For this I have written a small PHP script which I run from the command line using PHP-CLI. Now I want to hand over this script to someone but I do not want to: ...

...r methods', which is a simple implementation of the Observer pattern. Basically, the handler methods (callables) are stored in an array and are each called when the event 'fires'. Publish-Subscribe The disadvantage of Observer event systems is that you can only register the handlers on the actual Ev...

...正应用集群 ASM管理存储，Oracle自己的文件系统 心跳ip有问题，关闭次节点只留主节点，防止数据混乱 virtual ip 可漂移，private ip 心跳ip，scan ip DNS解析 ntp服务禁用（时间同步服务，Oracle自己有同步） grid 用户：存储、集群管...