Please Note: This article is written for users of the following Microsoft Excel versions: 2007 and 2010. If you are using an earlier version (Excel 2003 or earlier), this tip may not work for you. For a version of this tip written specifically for earlier versions of Excel, click here: Exiting a For ... Next Loop Early.

Exiting a For ... Next Loop Early

by Allen Wyatt
(last updated September 7, 2015)

2

If you use For ... Next loops in your macro programming (who doesn't?), then you should know that they can take a great deal of time. You can minimize this by only checking what you need. For instance, consider the following code, which checks an array to see if a value exists. If it doesn't, then it adds the value to the end of the array. If it does, then the value is not added.

AddIt = False
For J = 1 to NumEntries
    If NumValues(J) = ToAdd Then AddIt = True
Next J
If AddIt Then
    NumEntries = NumEntries + 1
    NumValues(NumEntries) = ToAdd
End If

This works great, but if the array gets large, you can end up going through the For ... Next loop quite a few times. Now consider the following code, which accomplishes the same task, but dumps out of the For ... Next loop early if a match is detected.

AddIt = False
For J = 1 to NumEntries
    If NumValues(J) = ToAdd Then
        AddIt = True
        Exit For
    End If
Next J
If AddIt Then
    NumEntries = NumEntries + 1
    NumValues(NumEntries) = ToAdd
End If

Now if a match is found early on in the loop, all the rest of the iterations are skipped because the Exit For statement is encountered and the loop is basically exited right away. The result is a faster running macro.

ExcelTips is your source for cost-effective Microsoft Excel training. This tip (11335) applies to Microsoft Excel 2007 and 2010. You can find a version of this tip for the older menu interface of Excel here: Exiting a For ... Next Loop Early.

Author Bio

Allen Wyatt

With more than 50 non-fiction books and numerous magazine articles to his credit, Allen Wyatt is an internationally recognized author. He  is president of Sharon Parq Associates, a computer and publishing services company. ...

MORE FROM ALLEN

Creating a Full-Page Border

Borders are easy to add around text or entire paragraphs. It may be surprising to you to learn that Word can just as ...

Discover More

Creating a Hyperlink to a Specific Page

Most people add hyperlinks in a document to reference pages on the Web. You can, however, create hyperlinks to other Word ...

Discover More

Offering Options in a Macro

It is often helpful to get user input within a macro. Here's a quick way to present some options and get the user's response.

Discover More

Create Custom Apps with VBA! Discover how to extend the capabilities of Office 2013 (Word, Excel, PowerPoint, Outlook, and Access) with VBA programming, using it for writing macros, automating Office applications, and creating custom applications. Check out Mastering VBA for Office 2013 today!

More ExcelTips (ribbon)

Displaying the Selected Cell's Address

Need to know the address of the cell that is currently selected? The function and macro highlighted in this tip will come ...

Discover More

Using Seek In a Macro

When reading information from a text file, your macro may need to start reading at a place other than the beginning of ...

Discover More

Opening a Workbook and Suppressing Automatic Macros

Want to stop Excel from running any automatic macros that may be stored with a workbook? Here's how to do it.

Discover More
Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."

View most recent newsletter.

(Your e-mail address is not shared with anyone, ever.)

Comments

If you would like to add an image to your comment (not an avatar, but an image to help in making the point of your comment), include the characters [{fig}] in your comment text. You’ll be prompted to upload your image when you submit the comment. Maximum image size is 6Mpixels. Images larger than 600px wide or 1000px tall will be reduced. Up to three images may be included in a comment. All images are subject to review. Commenting privileges may be curtailed if inappropriate images are posted.

What is six minus 3?

2014-12-01 07:21:49

Doug

Just a note to say that the Addit conditions are reversed in the code. It should be initialized to TRUE and set to FALSE if the value is detected in the loop.

2014-12-01 07:12:18

balthamossa2b

While it's not a good programming practice, I prefer going in and out of loops by using GoTo.

It's useful when you have a "loop of loops", or:

For i = 1 to n
For j = 1 to m
[stuff]
If (whatever) Then GoTo skiploop
Next j

For j = 1 to o
[otherstuff]
If (whatever) Then GoTo skiploop
Next j
skiploop:
Next i



The proper way to do this would be with embedded Ifs or with Booleans used as checks (as in this tip's example), but it's usually too bothersome.

And for big loops it can add too many extra operations that have an effect in the execution time (I'm thinking bruteforcing Project Euler-like stuff; in small loops of, say, <10k iterations you won't see the effect).

Yay for laziness.


This Site

Got a version of Excel that uses the ribbon interface (Excel 2007 or later)? This site is for you! If you use an earlier version of Excel, visit our ExcelTips site focusing on the menu interface.

Newest Tips
Subscribe

FREE SERVICE: Get tips like this every week in ExcelTips, a free productivity newsletter. Enter your address and click "Subscribe."

(Your e-mail address is not shared with anyone, ever.)

View the most recent newsletter.

Links and Sharing
OUR COMPANY
OUR PRODUCTS
OUR AUTHORS
OUR SITES
 

Copyright © 2018 Sharon Parq Associates, Inc.