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Re: cocoa handling null values

Subject: Re: cocoa handling null values
From: Jesse Grosjean <email@hidden>
Date: Wed, 27 Sep 2006 07:54:06 -0400
Delivered-to: email@hidden
Delivered-to: email@hidden

What is the best way to translate null values back and forth between
cocoa and applescript? In particular I want to enable my users to set
a property to a cocoa NULL from applescript. I see applescripts
"null" and "missing value" but none of those seem to turn into a NULL
on the cocoa side. Can anyone tell me what the best or expected way
to do this is?

'missing value' is an NSNull singleton, isn't it?

For me 'missing value' comes in on the Cocoa side as the String "msng" for a string property. Is that what other people see, or did I mess something up?

Or if I pass 'missing value' in as a command parameter it comes in as <NSAppleEventDescriptor: 'msng' Home Archives FAQ Terms/Conditions Contact RSS Lists About Visit the Apple Store online or at retail locations. 1-800-MY-APPLE Contact Apple | Terms of Use | Privacy Policy Copyright © 2007 Apple Inc. All rights reserved.