Internet Information Server introduced the notion “Isolation Level”, which is also present in IIS4 under a different name. IIS5 supports three isolation levels, that you can set from the Home

Many compilers have a special switch for precompiled headers. A precompiled header is a binary file containing intermediate code that is the result of preprocessing and compiling an ordinary header

A link-time error such as the following is rather common:

Different objects of the same class can access each other’s members, even if these members are private. For example: class A{ int n;public: void f(A* p) {p->n=0;}// another object’s private

Can you tell the difference between the following function calls? f(a,b);g((a,b)); // how many arguments are being passed to g? In the first example, the function f() is called with

Due to hardware limitations and the finite nature of computer arithmetic, certain numeric values cannot be represented properly. These values include infinity, negative infinity, and so on. The limits of

This is a routine for returning the correct file extensions catering to allpossible input values. ‘ Enhanced routine to return correct extension” Input Output Description’ —– —— ———–”

To retrieve drive names from a system, use the static method listRoots in java.io.File package. It will return the all-available drive present in the system. This method will be useful

If you insert/update/delete multiple times to the database, you canimprove performance by using the addbatch and executebatch methods of statement objects. One drawback about using this method is that it

This tip shows how to simulate the look of an Oultlook address book records selection. Open a New VB Project and add a New Form with 1 Text Box and

The purpose of the JDBC API is to make it easy to use other drivers.For example, the driver can be passed into an application using a command line system property.

This function returns the next alpha range. When you pass

To compact MDB databases using ADO, just include a reference to the ‘Microsoft Jet and Replication Objects 2.6 Library’ (distributed with the MDAC 2.6 package) in your VB project. The

Subclass PlainDocument, then set the document of the JTextfield to the subclass as shown below: JTextField myJTextfield;myJTextfield.setDocument(new DigitsDocument());class DigitsDocument extends PlainDocument { public void insertString(int offs, String str, AttributeSet a)throws

Opening recordsets as ForwardOnly or ReadOnly makes them move faster between records. In addition, storing fields to variables before begining the loop speeds up field access. Example: * Create a

With Modal forms there is a need to restrict the movement of the mouse to the form until user closes the form. This can be achieved by using the ClipCursor

Most beginners accidentally declare duplicate variables of different data types or of the same data types. The following illustrates this: class Duplicate{ String data; private void fun() { String data=

Uniqueidentifier(GUID) can’t be used in aggregate operations like count(), etc. This problem may be solved by casting uniqueidentifier as varchar. Presuming that guid_column is a uniqueidentifier column: select count(cast(guid_column as

One drawback to presenting data to a browser is that once you have it you can’t manipulate it. With more and more business functions being carried out through the web

‘ Returns a collection with the names of all the image’ files in a directory or a directory tree’ this includes all the image types that can be loaded into

‘ The attributes of a file in a readable format.’ It works also with open files, raises an error if the file doesn’t exist.Function GetAttrDescr(filename As String) As String Dim

Private Const MAX_PATH = 260Private Type SHFILEINFO hIcon As Long iIcon As Long dwAttributes As Long szDisplayName As String * MAX_PATH szTypeName As String * 80End TypePrivate Declare Function SHGetFileInfo

Private Const MAX_PATH = 260Private Type SHFILEINFO hIcon As Long iIcon As Long dwAttributes As Long szDisplayName As String * MAX_PATH szTypeName As String * 80End TypePrivate Declare Function SHGetFileInfo

‘ Returns a collection with the names of all the executable’ files in a directory or a directory tree’ this includes all “exe”, “bat”, “com”, “pif” files” NOTE: Uses the

Option ExplicitPrivate Declare Function FindFirstFile Lib “kernel32” Alias “FindFirstFileA” _ (ByVal lpFileName As String, lpFindFileData As WIN32_FIND_DATA) As LongPrivate Declare Function FindNextFile Lib “kernel32” Alias “FindNextFileA” _ (ByVal hFindFile As

At times you may need to create a GUID from ASP, for example when assigning unique IDs to users that are visiting your site for the first time. While you