C++ allows casting a pointer to member functions of one type to another pointer to member, as long as the signatures of the two match. However, the results of such

Here’s a topic that was recently discussed at the Standardization committee. Suppose we have the following enum type: enum Stat { good, bad}; Is it legal to use the enumerator

Does your C++ compiler accept the following code? char s[3]=”abc”; // illegal in C++, no place for ” The standard requires that the size of a char array initialized with

The implementation ensures that functions having an exception specification should throw only exceptions that are listed in their exception specification. For example: class X{};class Y{};void f() throw X{ throw Y();

In a previous tip, http://www.devx.com/free/tips/tipview.asp?content_id=1585 , I explained the concept of lvalues and rvalues. Binding a reference to an rvalue is allowed as long as the reference is const. The

The name of the executable is stored in the string argv[0]. To access it, declare your main() function as follows: int main(int argc, char ** argv) Even if the application

It may be tempting to squeeze an extra pint of performance by removing all debug information from the release version. However, it’s recommended to leave minimal debugging info even in

The interface of a class consists of its public members. Usually, private members represent implementation details and are not exposed to other classes and users. Private members can be member

Question: Does “Connection.setAutoCommit(false)” mean “begin a transaction?” Answer: By default, JDBC connections start in autocommit mode. This means that every executed statement is treated as a separate transaction. A transaction

Question: Suppose a client of a Web application logs in using a login-handler servlet, and then some back-end operations using EJBs need to be performed. Can I store the initial

Question: What is the difference between a JavaBean and an Enterprise JavaBean? Answer: It is natural to be confused regarding the relationship between JavaBeans and Enterprise JavaBeans (EJBs), because they

Question: If ResultSet is an interface, then why can we call methods like next(), isLast() etc. without defining the method body anywhere in the program? As I understand it, in

Question: What is the reason that allocated memory should be explicitly deallocated ? Is there any difference in the way the data with different storage types (stack, heap, static memory)

Question: Is there a function that can convert upper case to lower case and vice-versa? Answer: The toupper() and tolower() functions are declared in the standard header. Each of them

Question: I am currently writing a program that uses multidimensional arrays to store and display data items. My problem is that I cannot seem to change the array values from

In general, a browser can’t render an HTML table before the closing &/TABLE> tag is received. This means that the end user might wait for several seconds before a table

You can access a lot of useful information through the ServerVariables collection, but this has a price in terms of performance. More precisely, the first time you reference this collection

The Server.MapPath method slightly shows down the execution of your ASP scripts, because IIS has to access some internal variables. For this reason you should try to avoid it if

When you perform a complex and time-consuming query in your ASP program, you should periodically test whether the client is still connected, using the IsClientConnected method of the Response object,

You can speed up ASP by adding the following statement at the beginning of an ASP page: Response.Buffer = True This statement must be executed before any HTML text is

As most ADO developers know well, there are basically two distinct syntax for opening a Connection and then a Recordset: you can explicitly create and open a Connection object, and

Question: I’m trying to use the Advanced Find feature of Outlook to locate attachments that contain a specific word (analogous to the Containing Text feature of Windows’ Find feature). I

Question: I have a problem with my Exchange Server. All my existing Outlook users can send and receive e-mail; no problem at all! But if I create any new users,

Question: Is there any way to edit the global address book in Exchange from a 98 client machine? Answer: The easiest way isn’t the way you’re expecting. I’d use a

Question: How do I set up the administrator contact subfolders as an address book on a different mailbox in order to allow other users to add information? Answer: Assuming you

Question: Can you create a HTML or RTF file in Visual FoxPro? If so, how? Answer: VFP comes with a program (called GENHTML.PRG) that can generate HTML from many different

Question: I’d like to draw an organizational chart of each of our customers (and store that diagram in an Exchange public folder), linking each different role to a specific Outlook

Question: Why should I choose to implement Exchange 5.5 when Microsoft Office works for my company? Answer: Well…Microsoft Exchange Server is a very different product from Microsoft Office. Office is

Question: I am trying to find out how to import Novell GroupWise Mailboxes and address books into Outlook 2000. No one seems to know. Can you help or suggest where