This was prompted by Deltic's answer, I wanted to provide an counter-example proving you can use generics for the animal feeding routine. (ie: Polymorphic Generic List)First some background: The reason you can feed generic animals using a generic
DataSnap伺服器可以通過方法調用向用戶端返回資料流,當然,也可以從用戶端向伺服器上傳資料流,都是通過方法調用的方式來實現的。下面以一個簡單的例子來示範。伺服器端實現:{$METHODINFO ON} TFUService = class(TPersistent) public function ReplaceFile(FileName: string; FileStream: TStream): Integer; function GetFile(schema, FileName:
有時候安裝一些組件以後會出現: [Fatal Error] Project1.dpr(1): Unit not found: 'System.pas' or binary equivalents (DCU,DPU) 的錯誤,不知道什麼原因,剛開始只有重裝Delphi才解決問題,後來察看Borland官方網站得知,其實只是環境庫路徑丟失造成的,解決方案很簡單,如果你D7安裝預設的路徑,則只需要開啟Delphi菜單,選擇Tools->Environment
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1 private DataSet LoadFile(string fileName) 2 { 3 DataSet ret = new DataSet(); 4 System.Data.OleDb.OleDbConnection myConnection = new System.Data.OleDb.OleDbConnection(); 5 //You should consider using "HDR=NO", to get numbered