UnDim statement - MapBasic - 2023

Purpose

Undefines a variable. You can issue this statement from the MapBasic window in MapInfo Pro.

Syntax

UnDim variable_name 

variable_name is the name of a variable that was declared through the MapBasic window or through a workspace.

Restrictions

The UnDim statement cannot be used in a compiled MapBasic program; it may only be used within a workspace or entered through the MapBasic window.

Description

After you use the Dim statement to create a variable, you can use the UnDim statement to destroy that variable definition. For example, suppose you type a Dim statement into the MapBasic window to declare the variable X:

Dim X As Integer 

Now suppose you want to redefine X to be a Float. The following statements redefine X:

UnDim X 
Dim X As Float

See Also:

Dim statement, ReDim statement