May 1995
Beginner
508 pages
16h 14m
English
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Name
Dim Statement
Syntax
Dimvarname[([subscripts])],varname[([subscripts])]
-
varname Use: Required
Your chosen name for the variable.
-
subscripts Use: Optional
Dimensions of an array variable.
Description
Declares and allocates storage space in memory for variables. The
Dim statement is used either at the start of a
procedure or the start of a module or scripting block. In the first
case, the variable declared using Dim is local to
the procedure. In the second, it’s available throughout the
module.
Rules at a Glance
You can declare multiple variables in a single
Dimstatement, as long as you use a comma to delimit them.When variables are first initialized with the
Dimstatement, they have a value of Empty. In addition, the following statements will both evaluate toTrue:vVar = 0 ' True expression vVar = "" ' True expression
To declare array variables, use the following syntax:
- Fixed length, single dimension
Dimarrayname(upper)Example:
DimmyArray(10)- Fixed length, multidimension
Dimarrayname(upper,upper,...)Example:
DimMyArray(20,30)- Variable length, single or multidimension
Dimarrayname( )Example:
DimmyArray( )
You can declare a multidimensional array with up to 60 dimensions.
Variable-length arrays can be resized using the
ReDimstatement. Fixed-length arrays can’t be resized.
Example
The example shows how to use the Dim statement to
define a variable that receives an array returned by a function:
<HTML> <HEAD> <TITLE>Returning an Array from a Subroutine</TITLE> <SCRIPT ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.