Most coding standards recommend the use of Hungarian variable naming, which uses prefixes to indicate the variable’s type. However, these naming conventions usually should not be used in a component’s

This tip is useful if you do Outlook automation with user created Outlook folders. These folders cannot be accessed by the GetDefaultFolder method usually employed in automation techniques. This snippet

The VBIDE object model doesn’t offer any native property or method to determine whether the IDE is in design-time mode, run-time mode, or debug (break) mode. However, it’s easy to

If from an ASP page you try to use Response.Redirect after having written anything to the browser, you’ll get an error saying that the page’s headers have already been written.

The DoEvent statement should be used only to give other portions of your program to be reactive to the end user’s actions. Instead, many VB developers use it to force

The RmDir command can delete a directory only if it doesn’t contain files or sub-directories. If the directory you want to delete does contain other files or, worse, subdirectories it

Consider the usual way of swapping two strings: Dim s1 As String, s2 As StringDim tmp As String’ initialize the strings s1 = String$(1000, “-“)s2 = String$(1500, “+”)’ do the

Suppose you want to store the movements of a chess game in a file so that when the program terminates, the users can resume it later from the same point.

Often, it is helpful to find the current classpath. This can be done from within a Java program by using the following code: System.out.println(System.getProperty(

The term thunk dates back to the days of the antediluvian Algol programming language and has stuck since then. A thunk is an invisible and parameter-less function or procedure that

Dynamic linking — either in the form of shared libraries in Unix or Windows DLLs — is not defined by standard C++. However, this is a widely used feature among

A typical way in which constants or global variables are defined in Java is to define a class so it stores all the constant variables which are marked as

It is sometimes necessary to get the exception’s stack trace as String (for logging, reporting, etc.). Unfortunately, the Exception class itself provides only the getMessage() method which does not include

The concept of a variable argument list is rather common: void f(const char *format,

It is often helpful to provide a

There is a very simple way to get around the compile error when passing UDT (user-defined type) in procedure between forms. Just declare the procedure as Friend instead of Public.Example:

This function resizes the column headers to fit the ListView. It can be used in the Form_Resize event or just in Form_Load. ‘Module: Module1Option ExplicitPrivate Type RECT Left As Long

One of the peculiar features of Microsoft SQL Server is its capability to keep alive multiple threads at the same time for performing I/O operations. The configuration options that affects

An empty # sign is a null preprocessor directive. A null directive has no effect but you can use it to document your intentions, for example: ifndef HEADER_INCLUDED#define HEADER_INCLUDED#else# //

The library supports two types of file streams: char-based streams such as std::ifstream and whcar_t streams. The names of wchar_t streams are the same as their char-based counterparts, except that

Just like the fseek() function of , classes enable you to position the stream’s pointer at an arbitrary location by calling the seekg() member function. For example, you can position

C++ forbids direct assignments of arrays. Therefore, your compiler will flag the following code as an error: char buff[];buff=

Here a few guidelines for improving std::string’s performance and avoiding common pitfalls. Consider the following for-loop: std::string str =