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Storing RTF Text

Question: I’m trying to store text that’s in an RTF format using the TextRTF property of VB’s RichTextBox control. What type of field do I have to use in my

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Rolling 12-Month Totals

Question: I have two similar tables with monthly data: one holds current year data and the other holds prior year data. How do I combine them to create a rolling

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Converting Number to Date

Question: How do I convert a number that represents a date into a date field? The number’s format is CCYYMMDD. Answer: Fortunately, the format of your numeric value doesn’t need

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CopyURLToFile – Download a file from the Internet via FTP or HTTP

Const INTERNET_OPEN_TYPE_PRECONFIG = 0Const INTERNET_FLAG_EXISTING_CONNECT = &H20000000Private Declare Function InternetOpen Lib “wininet.dll” Alias “InternetOpenA” _ (ByVal lpszAgent As String, ByVal dwAccessType As Long, _ ByVal lpszProxyName As String, ByVal lpszProxyBypass

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Auto Start Full Text Index

Question: Can I auto start full text index? Answer: Although Enterprise Manager doesn’t provide the option, you can set this service to start automatically by using the services icon in

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Determining Field Data Type

Question: Is there a non-platform-specific SQL way of determining what data type a given field is? Answer: That information is specific to each database. Every product stores its meta data

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User-Defined Data Type in a Temporary Table

Question: Can I use a user-defined data type when defining a temporary table in a stored procedure? Answer: You can use user-defined data types in temporary tables, but remember one

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Renaming a File

To rename a file, use the standard function rename() (declared in ). This function takes two arguments of type const char *, the first of which is the old name

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Deleting a File

The standard function remove() deletes a file. It takes one argument of type const char * which is the name of the file to be deleted. You can provide a

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Understanding Iterator Categories

The Standard Template Library defines five major categories of iterators. The following diagram illustrates these categories:input iterators output iterators / forward iterators | bidirectional iterators | random access iteratorsNote that

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Obtaining the Max Value from an Array

Question: How can I make a function to return and display the maximum number in the following array: int my_array[]={10,3,35,101,65,100}; Answer: First, sort the array. Then display the last element

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New & Malloc

Question: I understand that most of the time, new and malloc may use the same allocation routines, but does that necessarily mean new calls malloc? I am asking because I

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Sorting a Vector

Question: I have data in a Vector and need to sort it before displaying iton the screen; how do I do this? Answer: The Java 2 Collections Framework provides a

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Superclass Variables Referencing Subclasses

Question: What is the advantage of declaring a variable as a superclass referenceand then pointing that variable to an instance of a subclass? Theway I see it, I can achieve

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RMIC and Inner Classes

Question: Can RMIC make stubs for inner classes? When I tryrmic packagename.OuterClassName$InnerClassName, it doesn’t work. Answer: Yes, RMIC can make stubs for inner classes. However, you must use thefully qualified

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Debugging in Visual C++

Question: Is there a way to access the call stack debugging information from the code? I would like to print the call stack inside a function, each time it is

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Repair, Compact, and Back Up Access MDB

This repair and compact also backs up the Access MDB. Function ValidateMdb(MDB As String) As Boolean This function repairs, compacts, and backs up a database fileand deletes stray LDB (locking

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Using Temp Tables in Oracle 8i

Oracle 8i introduces the concept of temp tables. This feature long since enjoyed by SQL Server developers enables data to be visible on a Session orTransaction basis. To create an

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Transforming a String to Uppercase Letters

To change the case of all the letters in a string object, use the std::transform() algorithm. This algorithm is defined in the standard header . It takes four arguments. The

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Tied iostream Objects

The standard streams cin and cout are automatically tied to each other. This means that whenever you’re using both of them, C++ ensures that their operation is synchronized. In other

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iostream Objects and Complex Numbers

The standard stream objects support all built-in types as well as several classes of the Standard Library, e.g., std::string. If you’re using complex arithmetic, you’d be pleased to hear that

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Releasing Database Locks

Question: How can I release all existing database locks for all the sessions a specific user has started? Answer: The easiest way probably is to log that user out. Otherwise,

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ASP Error: ODBC Driver General Error

Question: I have been receiving the following (albeit general) error sporadically: “Microsoft OLE DB Provider for ODBC Driverserror ‘80004005’ [Informix][Informix ODBC Driver]General error.” This error has occurred when the code

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Date Time Values in Parameterized Queries

Question: I have a parameterized SQL statement like the following: “insert into eSession (ESessionID, eUserName, eLastActivityTime) VALUES(?,?,?)” It’s parameters are ‘bbb’,’name’ and ‘2000/01/01 22:23:25′, using an ODBC connection. I can’t

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IMC and Latency

Question: Outbound messages are being delayed randomly. You can send them to the same host—sometimes they don’t queue up long enough to even see. Other times they are there for

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Automating Backups

Question: Is there a command-line way to back up my Exchange databases without stopping the services, like the GUI can? Or, for that matter, is there any automated method of

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The hidden Collect method of the Recordset object

The ADO Recorset object exposes a hidden, undocumented member: the Collect property. This property is functionally similar to the Field’s Value property, but it’s faster because it doesn’t need a