Beginners and even experienced programmers who switch to a new compiler suddenly discover that their programs don’t compile anymore. Sometimes the programs compile but produce numerous warning messages. In most

Don’t forget that MS compiler initiates pointers with 0xCCCCCCCC value. In this case: void *p; … //do something here… if (p!=NULL) delete p; // Memory violation The right way void*

The sprintf() function isn’t type-safe, it doesn’t support user-defined types and it’s a common source of buffer overflow bugs. In C++, there’s a better alternative to sprintf(), namely stringstream objects.

Sizeof is a useful operator because it reports both the amount of memory that data items take and the number of bytes that data types. For instance: cout

It is unfortunate that VB5 does not provide a quick way to check if an item with a certain key exists in a collection. This results in errors if an

This is a fast, efficient way to make a split function. For longer strings, performance can be improved by enlarging AllocUnits. Public Function Split(strText As String, _Optional Byval Delimited As

Extracting the extension of a filename is a requirement in many file searches and file I/O related applications. A simple way to do this is to use the split function.

Suppose you have an abstract class MyAbstractClass with an abstract method do(): abstract class MyAbstractClass {abstract void do() ;} Of course, some classes inheriting from MyAbstractClass can be redefined with

You can establish a link to the remote SQL Server using this code: Sp_addlinkedserverSyntax :SP_addlinkedserver[@Server]=’server'[,[Srvproduct=]’product_name'[,[@provider=]’provider_name’][,[@datascr=]’data_source’][,[location=]’location'[,[@provstr=]’Provider_string'[,[@catalog=]’catalog’]server: Name of the linked server to createproduct_name: Product name of te OLE DB data sourceProvider_name:

Write the following code, compile it, then try to run it: class TstApppublic static void main (String args[])Next_Level(args[0]);}public void Next_Level(String Incoming_String)System.out.println(Incoming_String);}} It is very simple code but it will not

The lastModified() method in java.io.File returns a long datatype. Thislong datatype represents the date and time when the file was last modified.The value does not carry any usage unless it

Counting the occurrences of a string can be useful when you

Associate a label that describes what the text box is meant for.For example, a label with the caption ‘Name’ would be a good pair for a text box wherein you

Private Declare Function GetSystemMenu Lib “user32” (ByVal hWnd As Long, _ ByVal bRevert As Long) As LongPrivate Declare Function RemoveMenu Lib “user32” (ByVal hMenu As Long, _ ByVal nPosition As

It’s possible to show the list box of a combo box, with focus, using SendKeys “{F4}”. It

Use early binding by declaring variables as the correct object/interface. This will speed up procedure calls. Example: * Create a new Standard EXE Project * Add a list box to

Encapsulating settings and registry calls into property procedures is a good way to ensure valid entries. This method manages errors while including them in IntelliSense. Example: ‘mdlSettings Option Explicit Public

Sending the window message CB_SHOWDROPDOWN to the combo boxl shows the list box of a combo box. Example: * Create a new Standard EXE Project * Add a combo box

‘ convert a VB color code to the ##rrggbb format used in HTML attributesFunction ColorToHTML(ByVal color As Long) As String ‘ HTML color codes are in the format #RRGGBB (red,

‘ Encode an string so that it can be displayed correctly’ inside the browser.” Same effect as the Server.HTMLEncode method in ASPFunction HTMLEncode(ByVal Text As String) As String Dim i