Tip Bank

There is a common and tricky problem that arises when you’re sending data from an HTML form to the server?the amount of data you can send depends on which method

To test if an integer is a power of 2 (1,2,4,8,16…256…), use the following code: if (!(x & (x-1)) then … Because 2^N-1 numbers have no common bits with 2^N

Say Employee_Table has fields like EMP_NO, EMP_NAME, etc. In java, try this: try{ Connection conn =…//opening connection. PreparedStament ps = con.prepareStatement(“Select conn.setAutoCommit(false); Statement stmt = conn.createStatement(); stmt.addBatch( sql 1st insert

‘ Return a boolean indicating whether the input connection string is for the’ ADO.NET’s SQL Server managed provider’ Note: the function assumes the input string is a valid OLEDB or

‘ Return a boolean indicating whether the input connection string for the OLEDB ‘ managed provider points to a SQL Server DB” Examples:’ Debug.WriteLine(IsOleDbSqlConnString(“Provider=SQLOLEDB.1;Data ‘ Source=.;User ID=sa;Password=;Initial Catalog=MyDB”)) ‘ =>

When you use a web service’s proxy class, the calls to the web service might fail if you’re behind a proxy server. To solve the problem, you set the Proxy

‘ Return the Database name if the input connection string points to a SQL ‘ Server DB, or the DB path if the connection string points to a Jet (Access)

It may happen that you have to define a lot of variable of some type, and you want the possibility to later change their type without manually change the declaration

Here’s the code: #define offset(a,b) ((int) (&( ((a*)(0)) -> b))) Step by step, here’s what it does: Type-cast 0, or NULL, into a pointer of type a. So a must