While most of the code optimizations are performed at compile time, there are optimizations that only a linker can perform. For example, it can detect unreferenced function calls. These are

In earlier stages of C++, it was impossible to delete a const object, even if that object was constructed on the free store. This could cause memory leaks. However, the

To initialize a struct that contains bit fields, simply use the ={0}partial initialization list: int main(){ struct MP3_HEADER { unsigned Sync:11; unsigned Version:2; unsigned Layer:2; unsigned Protection:1; unsigned Bitrate:4; unsigned

Question: Does Java have a switch statement that can use doubles and floats? Answer: The Java switch statement only supports values of type char, byte,short, or int. To conditionally execute

Most C++ users already know that they shouldn’t use auto_ptr objects as elements of STL containers. However, fewer users know exactly why this is so. The C++ Standard says that

I often hear people ask whether it’s possible to write code that is quicker than STL. This is a paradoxical question: the C++ Standard defines minimum performance requirements with which

Question: Often I place a Break Point in a Function or Procedure for Debugging purposes.How I can find the immediate calling procedure?Or, better how I can find all the previous

Question: I have a program in VB6 using an Access 97 database. The code I use for all my procedures is as follows: Dim db as DatabaseSet db = DBEngine.Workspaces(0).OpenDatabase(“biblio.mdb”,

Question: In C++, when a programmer intends to write: if (value == 1) { But, they often make the following mistake: if (value = 1) {…… Why doesn’t this problem

Question: When I try to implement the code that is in MSDN, I receive Run-time error ‘446’ Object doesn’t support named arguments. Dim cn As New ADODB.ConnectionDim rs As New

Question: I need to know how to pass a parameter from HTML to Standard EXE, and how to get these parameters in VB after you’ve passed them? Answer: Visual Basic

Question: After compiling my VB app, and installing it on my machine, it will run. But, when I install it on my professor’s machine at school, it doesn’t work at

Question: I just started with VB6 programming and I need to write a short program doing the following: 1. Enter a sentence.2. From this sentence which was entered, pick any

Question: I have noticed that a termination event won’t be fired unless the class variable is out of scope, or I specifically set the class variable to Nothing (in earlier

Question: Would you please tell me the code in Visual Basic for a cube root function on a basic calculator. Answer: It’s very simple, you just have to raise a

Question: I created a program to help our sales department to keep track of their sale quotes. It uses a MDB database and I used the ADO components to gather

Question: When opening an ADO connection, how do I specify that it use the SQL Server OLEDB provider with a DSN? Answer: Here’s the connection string you should use. Be

Question: How would I get a different picture to pop up every 3 seconds in a different position? Answer: It’s pretty simple, actually: Make a form with an image/picturebox control

Question: I have an Access 97 database with an OLE Type field containing bitmaps loaded with the LoadPicture() function. This works fine and the images turn up as “Bitmap Image”

Question: I am an extreme newbie with VB. How do I change the caption of a label to the value of a textbox? Answer: Substitute the name of the Label

Question: I have been using Visual Basic to manipulate databases for some time now and I consider myself skilled at it. The next challenge presented is to establish a connection

Question: When a control has focus, is there some way to determine which control had focus just before it? Answer: Nope, there isn’t any way to do that. But, I

Question: After I compile my DLL in VB and run the component through IIS, I cannot recompile the DLL and I get a file locking error. I am using VB6

Question: I get the folling error message when I try to run my code: Compile Error: Procedure declaration does not match description of event or procedure having the same name.

Question: I have a listbox with some names loaded from a recordset, I have also associated the memberID with its associated name as in the following: lstMember.ItemData(lstMember.NewIndex)= rsMembers![MemberId]. I want

Question: Is there any way I can make a JFrame look like JInternalFrame? It looks bad at runtime when you change the look-and-feel, but the mainframe doesn’t change. Answer: This

Question: Is it possible to have an array of character arrays? What about anarray of multidimensional character arrays? Answer: Java arrays are first-class objects. They can be referenced byObject reference

Question: I am trying to get remote access to my e-mail account. Although I can dial in the domain successfully, when I start Outlook, I receive this error message: “Network

Question: I am running Exchange 5.5 with about 60 mailboxes. When I try to access the e-mail tab of a newly created mailbox I get the following error: an error

Question: Is it possible to rotate a column 90 degrees in a PowerBuilder (5.0.04) datawindow so that the data print up and down instead of the usual left to right?