[摘要] 《Head First Design Pattern》一书中对观察者模式的定义如下: The Observer Pattern defines a one-to-many dependency objects so that when one object changes state, all of[全文]
[摘要] 部署Lync Server2013时系统提示Prerequisite installation failed安装必备组件失败:Prerequisite installation failed: SqlInstanceRtcLocal with a failure code of 2067922934[全文]