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   ► KBDesktop Data...Paradox & Ob...ObjectPAL Co...OPAL: Langua...   Print This     
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Part of the mo. lesson in the Nov 15 Issue of Prestwood eMag
Paradox Code Snippet:
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 A code snippet from our Paradox Code Snippets Page
ObjectPAL Empty String Check (isBlank() or not isAssigned())

In ObjectPAL, an empty variable can be unassigned (essentially null) or blank (equivalent to ""). You have to use both isBlank and isAssigned to check for an empty string.


var
 s String
endVar
  
;s = ""  ;Uncomment to test 2nd case.
 
if isBlank(s) or not isAssigned(s) Then
 msgInfo("", "empty string")
endIf
Switch to longer article version of ObjectPAL Empty String Check (isBlank() or not isAssigned()) (Corel Paradox / ObjectPAL Coding)

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Code Contributed By Mike Prestwood:

Mike Prestwood is a drummer, an author, and creator of the PrestwoodBoards online community. He is the President & CEO of Prestwood IT Solutions. Prestwood IT provides Coding, Website, and Computer Tech services. Mike has authored 6 computer books and over 1,200 articles. As a drummer, he maintains play-drums.com and has authored 3 drum books. If you have a project you wish to discuss with Mike, you can send him a private message through his PrestwoodBoards home page or call him 9AM to 4PM PST at 916-726-5675 x205.

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