Short-circuit evaluation is an optimization technique automatically adopted by most modern compilers, including all flavors of C++, Borland Delphi and many others. Unfortunately, the Visual Basic compiler is not in
Many VB programmers assume that Visual Basic 5.0 is not capable of creating stand-alone Type Libraries, because the documentation states that when an ActiveX component or control is created, the
Fixed-length strings are generally slower than conventional strings, because all VB string functions and operators only recognize conventional strings, thus all fixed-length strings must be transparently converted to and from
Private Declare Function GetUserName Lib “advapi32.dll” Alias “GetUserNameA” _ (ByVal lpBuffer As String, nSize As Long) As Long’ The name of the interactive userFunction UserName() As String Dim buffer As
When you write a procedure and you want to be sure that the procedure does not affect the value of any variable passed to it as an argument in the
Using “pure” VB, the only way to build a generic routine that returns the number of dimensions of an array passed as an argument is using a loop that repeatedly
Under VB4 Public variables in form and class modules were implemented in the same manner as variables in BAS modules, that is, as direct references to memory locations. This allowed
The fastest way to read a text file is using the Input$ function, as shown in this reusable procedure: Function FileText (filename$) As String Dim handle As Integer handle =
Private Declare Function GetWindowsDirectory Lib “kernel32” Alias _ “GetWindowsDirectoryA” (ByVal lpBuffer As String, _ ByVal nSize As Long) As Long’ Return the path of the Windows directoryFunction WindowsDirectory() As String