How to assign multiple variables the same value on one line

Posted on 2002-05-13
Last Modified: 2011-09-20
Is there a way to assign multiple variables the same value and do this on one line.  For example,

Dim A as variant, B as Variant, C as Variant

A = B = C = "Test"

The result would be that:
A = "Test"
B = "Test"
C = "Test"
Question by:KGW22
LVL 43

Expert Comment

ID: 7006160
That is actually valid code though it would get a result of False for A.

No is the simple answer, you cannot do it on one line.

You could do it with arrays in a sense:

Dim Ary As Variant
Ary = Array("Test","Test","Test")

LVL 33

Expert Comment

ID: 7006164
Nope there's no way.

LVL 142

Accepted Solution

Guy Hengel [angelIII / a3] earned 50 total points
ID: 7006169
You can have several lines of code on one line, using the : separator (btw this works also in the debug window)
A = "Test" : B = A : C = A

But you cannot assign to several variables at a time...
... unless you develop a proc like this to make it look like:

Private Sub SpreadValue(ByVal v _
  , Optional ByRef a _
  , Optional ByRef b _
  , Optional ByRef c _
  , Optional ByRef d _
  , Optional ByRef e _
  , Optional ByRef f _
  , Optional ByRef g _

  If Not IsMissing(a) Then a = v
  If Not IsMissing(b) Then b = v
  If Not IsMissing(c) Then c = v
  If Not IsMissing(d) Then d = v
  If Not IsMissing(e) Then e = v
  If Not IsMissing(f) Then f = v
  If Not IsMissing(g) Then g = v

End Sub

Usage example:

    Dim a, b, c
    SpreadValue "test", a, b, c
    Debug.Print a, b, c

Master Your Team's Linux and Cloud Stack!

The average business loses $13.5M per year to ineffective training (per 1,000 employees). Keep ahead of the competition and combine in-person quality with online cost and flexibility by training with Linux Academy.

LVL 33

Expert Comment

ID: 7006173
VB will do this
A = B = 2
A = False ' false because B is not 2

Msgbox A ' give u false
Msgbox B ' give u nothing because it is not assigned

VB is unlike C programming.

LVL 18

Expert Comment

ID: 7006230


if (b = a + a)
   puts("does this get printed");
LVL 15

Expert Comment

ID: 7006488
' that syntax won't work, but to 'expand a language', you can create function:

' Form1 code
Option Explicit

Private Sub Form_Click()
    Dim A As Variant, B As Variant, C As Variant
    SetValues "Test", A, B, C
    Print A, B, C
End Sub

' assigns value to multiple variables
Sub SetValues(ByVal Value As String, ParamArray Variables())
    Dim i As Long
    For i = 0 To UBound(Variables)
        Variables(i) = Value
End Sub
LVL 22

Expert Comment

ID: 7006665
VB requires assignments as one entry per logical line.  However, logical lines can be separated by a colon (:).  This is not recommended because it reduces visibility.

Programmers often don't care about readability and this often leads to bugs.

As angelIII indicated, you can use

A = "Test" : B = A : C = A

but the following is much more readable and therefore much less likely to create a bug when this code needs maintenance:

A = "Test"
B = A
C = A

(And, of course, your variables should be named such that they are as self-documenting as possible:

strTest1 = "Test"
strTest2 = strTest1
strTest3 = strTest1

Furthermore, variants are highly frowned upon (Dim A as variant, B as Variant, C as Variant) and should only be used where there is a specific need such as when VB requires it for a function.

Most modern-day developers agree that readable code is much more important than "efficient" code since maintenance issues will introduce many more bugs in complex efficient code than they will in readable code, and bugs are what cause code to be abandoned or patched to the point of becoming inefficient!

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Introduction While answering a recent question ( in the VB classic zone, I wrote some VB code in the (Office) VBA environment, rather than fire up my older PC.  I didn't post completely correct code o…
Introduction While answering a recent question about filtering a custom class collection, I realized that this could be accomplished with very little code by using the ScriptControl (SC) library.  This article will introduce you to the SC library a…
Get people started with the utilization of class modules. Class modules can be a powerful tool in Microsoft Access. They allow you to create self-contained objects that encapsulate functionality. They can easily hide the complexity of a process from…
This lesson covers basic error handling code in Microsoft Excel using VBA. This is the first lesson in a 3-part series that uses code to loop through an Excel spreadsheet in VBA and then fix errors, taking advantage of error handling code. This l…

831 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question