摘要: ingletons are objects that only support one instance of the object. In ArcObjects, singleton objects require instantiation through the Activator class and require explicit release via the ComReleaser class. See the System._ComObject and casting to strongly typed RCWs and Releasing COM References documents for more information. Additionally, all ArcObjects references within a thread should only communicate with objects in the same thread. Therefore, at ArcGIS 9.x, singleton objects were designed阅读全文
posted @ 2012-05-20 23:55 Joe-xXx 阅读(8) 评论(0) 编辑
摘要: 内存池优点阅读全文
posted @ 2012-05-05 16:03 Joe-xXx 阅读(7) 评论(0) 编辑
摘要: 什么是postgresql数据库阅读全文
posted @ 2012-05-05 15:17 Joe-xXx 阅读(24) 评论(0) 编辑
摘要: 由浅入深理解索引的实现(2)阅读全文
posted @ 2012-05-05 14:27 Joe-xXx 阅读(6) 评论(0) 编辑
摘要: 由浅入深理解索引的实现(1)阅读全文
posted @ 2012-05-05 14:17 Joe-xXx 阅读(20) 评论(0) 编辑
