播放器及組件:http://code.google.com/p/flexpaper/downloads/list源碼下載 需要使用svn 地址:http://flexpaper.googlecode.com/svn/trunk/用 JodConverter(Openoffice)可以在命令列下把OpenDocument Text(*.odt)OpenOffice.org 1.0 Text (*.sxw)Rich Text Format (*.rtf)MicrosoftWord
寫在前面:在.Net中使用Remoting來實現遠端連線,如果要在多伺服器切換遠程服務的對象,常常會出現這樣的錯誤:試圖重新導向類型"****"的啟用,而該類型已被重新導向,英文錯誤資訊為Attempt to redirect activation of type '****' which is already
1. Table per concrete class:每一個具體的類對應一張表,從關聯式模式中完全拋棄多態和繼承關係;2. Table per class hierarchy:每一個繼承體系對應一張表,通過不規則的關聯式模式支援多態,用一個辨識器列(discriminator column)來標識類型資訊;3. Table per subclass:每一個子類對應一張表,通過外鍵關係來表示出繼承關係。下面對這三種映射策略的優缺點逐一加以說明:1. Table per concrete
I almost forget where the original source is from.Hashtables are very convenient data structures however they are not very fast and it is very easy to make them even slower by using more logical, but ultimately much slower approach, consider the
Motiviations (http://aopalliance.sourceforge.net/motivations.html)Aspect-Oriented Programming (AOP) is a programming technique that will be able to enhance several existing middleware environments (such as J2EE), or development environements (e.g.
在用vb的時候,發現了個奇怪的問題,見下面代碼,在產生Recordset的過程中,調用了recordset的clone方法,clone後沒有做任何操作,及時跟蹤的過程中發現clone前的原recordset對象rectemp的recordcount是26,但是但調用Recordset的clone方法後,居然發現clone後新的複製本rectempcopy 比rectemp多了一倍的記錄。鬱悶,難道clone了還多出一倍?查詢msdn,上面這麼描述,Use the Clone method to