Software Venture Consulting

FileMaker Pro downloads & Resources
FileMaker Custom Functions
FileMaker Web Viewer Examples
FileMaker Pro & Lasso Consulting
Training
FileMaker Books
FileMaker Articles
FileMaker Error Reference

Free Web Tools
Free FileMaker Tools

Personal Pages
Videos
Adventures
Links

Shopping Cart
Shopping Cart

Search:

Free Newsletter
Signup


Contact


Privacy Policy



FileMaker is a registered trademark of FileMaker, Inc. in the U.S. and other countries.

 

 FileMaker Pro Custom Functions

List  |  Show Random  |  Upload  |  Add This to Your Site

is_valid_number (some_text)

Rate this function:  

RatingRatingRatingRatingRating
  Average rating: 4.4  (32 votes)
  Discuss this Custom Function

steve harley, none please
http://no.website.really.com

returns true (1) if the input text represents a valid number

Sample Input:
is_number ("-012.30")
Sample Output:
1


 Then copy & paste into FileMaker Advanced's Edit Custom Function window.

Description:

useful for determining whether a string represents a valid number, including handing of negative numbers and decimal values; ignores leading and trailing spaces, but enforces proper use of hyphen (minus) and period (decimal point) if present

Note: these functions are not guaranteed or supported by BrianDunning.com. Please contact the individual developer with any questions or problems.

This is my Custom Function and I want to edit it

Discuss:

There are no comments yet. Be the first to post a comment about this Custom Function! Please try to keep it brief & to the point. Anyone can post:

Your Name:
City/Location:
Comment:
characters left. If you paste in more than 1500 characters, it will be truncated. Discuss the function - advertisements and other useless posts will be deleted.
Answer 4 + 8 =
Search for Custom Functions:

Custom Functions Widget
Download the Custom Function Dashboard Widget for OS X
Keep all the latest Custom Functions right at your fingertips!

Newest Custom Functions:

1. SortList ( theList )
  (Sat, Jun 23, 8:45am)
2. HexUUIDToNum_cf (_uuid)
  (Sat, Jun 16, 1:55pm)
3. httpResponseCode ( responseHeaders )
  (Tue, Jun 12, 10:40pm)
4. FindDuplicateCharacters ( string )
  (Fri, Jun 08, 5:01pm)
5. FieldRepetitionLast ( field ; maxRepetition )
  (Wed, Jun 06, 6:05pm)
6. CountModifiedRecords ( NameTimestampField ; StartTimestamp ; EndTimestamp )
  (Mon, May 28, 8:23am)
7. JSONArrayLength ( JSONArrayStr )
  (Fri, May 25, 7:46am)
8. interpolation (y1; y2; y3; x1; x2; x3; x1y1; x2y1; x1y2; x2y2; rnd)
  (Sat, May 19, 3:55am)

RSS Feed of Custom Functions