devxlogo

Use function name as a local variable

Use function name as a local variable

Many programmers don’t realize that it is perfectly legal to use the name of a function inside the Function itself, as if it were a local variable. This trick often lets you avoid the declaration of a temporary variable, and sometimes can speed up the code. Take for example the following code:

Function Max(arr() As Long) As Long    Dim res As Long, i As Long    res = arr(LBound(arr))    For i = LBound(arr) + 1 To UBound(arr)        If arr(i) > res Then res = arr(i)    Next    Max = resEnd Function

You can make it more concise by getting rid of the res variable:

Function Max(arr() As Long) As Long    Dim i As Long    Max = arr(LBound(arr))    For i = LBound(arr) + 1 To UBound(arr)        If arr(i) > Max Then Max = arr(i)    NextEnd Function

You can even pass the function name by reference to another routine, or as an argument of an API function.

See also  How to Create and Deploy QR Codes Online: A Comprehensive Guide
devxblackblue

About Our Editorial Process

At DevX, we’re dedicated to tech entrepreneurship. Our team closely follows industry shifts, new products, AI breakthroughs, technology trends, and funding announcements. Articles undergo thorough editing to ensure accuracy and clarity, reflecting DevX’s style and supporting entrepreneurs in the tech sphere.

See our full editorial policy.

About Our Journalist