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ShiftRight – Shift a Long to the right

‘ Shift to the right of the specified number of times” NOTE: requires Power2()Function ShiftRight(ByVal value As Long, ByVal times As Long) As Long ‘ we need to create a

RotateRight – Rotate a Long to the right

‘ Rotate a Long to the right the specified number of times” NOTE: requires Power2()Function RotateRight(ByVal value As Long, ByVal times As Long) As Long Dim i As Long, signBits

RotateLeft – Rotate a Long to the left

‘ Rotate a Long to the left the specified number of times” NOTE: requires Power2()Function RotateLeft(ByVal value As Long, ByVal times As Long) As Long Dim i As Long, signBits

BitToggle – Invert a bit in a value

‘ Toggle a bit in a value” NOTE: requires Power2()Function BitToggle(ByVal value As Long, ByVal bit As Long) As Long ‘ simply XOR with the negation of the bit mask

RotateRightI – Rotate an Integer to the right

‘ Rotate an Integer to the right the specified number of times” NOTE: requires Power2()Function RotateRightI(ByVal value As Integer, ByVal times As Long) As Integer Dim i As Long, signBits

RotateLeftI – Rotate an Integer to the left

‘ Rotate an Integer to the left the specified number of times” NOTE: requires Power2()Function RotateLeftI(ByVal value As Integer, ByVal times As Long) As Integer Dim i As Long, signBits

ShiftLeft – Shift a Long to the left

‘ Shift to the left of the specified number of times” NOTE: requires Power2()Function ShiftLeft(ByVal value As Long, ByVal times As Long) As Long ‘ we need to create a

BitClear – Clear a bit in a value

‘ Clear a bit in a value” NOTE: requires Power2()Function BitClear(ByVal value As Long, ByVal bit As Long) As Long ‘ simply AND with the negation of the bit mask

BitTest – Test the value of a bit

‘ Test the value of a bit” NOTE: requires Power2()Function BitTest(ByVal value As Long, ByVal bit As Long) As Boolean ‘ simply AND with the bit mask ‘ Range checking

Build List of Components in Hierarchy

It is sometimes useful to be able to obtain a complete list of the components in a container hierarchy. A getComponents() method is provided in the java.awt.Container class, but it

Pausing SQL Server

Pausing SQL Server prevents new users from logging in and gives you time to send a message to current users asking them to complete their work and log out before

Minimize the Use of Pointers and Dynamic Memory Allocation

Pointer-based operations are less frequently needed than they might seem. For instance, examine this class declaration: class PointerMisuse{private: CDC * m_pDeviceContext;public: PointerMisuse(); ~PointerMisuse();};PointerMisuse::PointerMisuse(){ m_pDeviceContext = new CDC;}PointerMisuse::~PointerMisuse(){ delete m_pDeviceContext;} Even

Beware of Single Quotes When Working With SQL

When concatenating a SQL statement such as INSERT, you may have trouble if your field value contains an apostrophe (‘) such as in “Commedia Dell’Arte.” SQL thinks the apostrophe is

Identify Host That Called Remote Method

When creating remote objects for use with Java’s Remote Method Invocation (RMI), you’ll often extend java.rmi.server.UnicastRemoteObject. When you do extend UnicastRemoteObject, it becomes easy for the remote methods to determine

Generate Beeps in Your Application

Many applications use an audible “beep” sound to signal that an error has occurred or to get the user’s attention for some reason. For example, a user interface that allows

Assigning Integers to an Enum Type

In C, it is valid to assign integers to an enumerated type. For example: /*** valid in C but not C++ ***/enum Status {good, bad};void func(){ Status stat = 1;

Initialize a Radio Button

Question: Is there a parameter that can be used within a radio button tag in an HTML form to set the default value for the radio group? Answer: The CHECKED

Processing a Transaction on One or More Remote Servers

In SQL Server 6.5, this command specifies that a distributed transaction managed by Microsoft Distributed Transaction Coordinator (MS DTC) starts and the transaction_name specifies a user-defined transaction name that is

Prevent Lenient Date Parsing

The java.text.DateFormat class and its java.util.SimpleDateFormat subclass are useful for formatting and parsing date and time values. For example, your application may allow a user to enter a date value

“Disable” the Browser’s Back Button

While there is no way to specifically disable the back button from within the browser, you can shortcut the navigation to another page. The trick is to catch the onbeforeunload

Shockwave Flash and DHTML

Question: How can I make a Shockwave Flash movie run over or under a DHTML DIV tag with text inside? I tried to use z-index but it doesn’t work well

Generate a DHTML Message From a Database

Question: I am working with Microsoft DHTML and when I insert the content of a field in a DHTML document, I lose part of my message. For example, suppose I

List All Network-Visible SQL Servers

To enumerate all network-visible SQL servers using SQL-DMO objects, create a new standard EXE project and add a reference to sqldmo.rll. This file can be found in BinnResources1033sqldmo.rll under the