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his book explores the full spectrum of wireless networks including Bluetooth, Wi-Fi, and 3G. You’ll also find easy-to-understand guidelines and pointers on how to implement a mobile and wireless application to extend your enterprise systems and meet your company’s needs. This book presents key information on: How to build smart
Use Bitwise Operators in T-SQL to do AND/OR/XOR (&/|/^) between two or more bit/integer variables. You can use z = x and y in VB where x,y,z is Boolean, in T-SQL: SET @z [email protected] & @y Or swap two Integer variables: DECLARE @X int, @y intSET @x = 5SET @y
Here’s the syntax for the stored procedure: CREATE PROCEDURE [dbo].[RenameColumn] @tblname as varchar(50), @oldcolnameas varchar(50), @newcolname as varchar(50)ASdeclare @tblColname varchar(100)set @tblColname = @tblname +’.’ + @oldcolnameBEGIN TRANSACTIONSET QUOTED_IDENTIFIER ONSET TRANSACTION ISOLATION LEVEL SERIALIZABLESET ARITHABORT ONSET NUMERIC_ROUNDABORT OFFSET CONCAT_NULL_YIELDS_NULL ONSET ANSI_NULLS ONSET ANSI_PADDING ONSET ANSI_WARNINGS ONCOMMITBEGIN TRANSACTIONEXECUTE sp_rename @tblColname , @newcolname,’COLUMN’COMMITGO
Suppose you have a String containing comma-separated substrings. In order to access the substrings individually, you’d normally rely on a StringTokenizer. And if you wanted to put the substrings in an array you’d write something like this: import java.util.StringTokenizer; … String colors= “red,blue,yellow,green”; StringTokenizer tk= new StringTokenizer(colors, “,”); String[] colorArray=
he authors show you how to design complex software to get the best from the UNIX operating system. Using short code snippets to illustrate how to use system calls, they also include a number of hands-on “projects” that very quickly help readers expand their skill levels. The book includes chapters
The basic JTable rendering mechanism supports a single renderer for all cells in a column. The Column Renderer may be set in the TableColumn class. If the TableColumn Renderer is null, the JTable looks up the Renderer based on the Column Class. The Column Class is then determined by the
Brackets are well balanced if each ‘(‘ has its ‘)’. The argument str represents the array of characters which contains the expression. The following function returns 0 if the brackets in the expression are well balanced, and a nonzero integer if not. int balanced(char *str){ int balance=0; // Balance indicator.
In some cases, it is possible to call a class member function without creating the class object. In the following example, the program will print “hello world” although class A has never been created. When the program enters the “PrintMe” function, the “this” pointer is zero. This is fine as