missing value


missing value

Description

This is actually a class, but it has no values; all you'll ever see is the class itself, so it works as if it were a constant. It seems to be a way for an application to return a value while signaling a nonvalue; it isn't an error, and it isn't a failure to return any value at all.

Example

 tell application "Finder" to get description of folder 1 -- missing value 




AppleScript. The Definitive Guide
AppleScript: The Definitive Guide, 2nd Edition
ISBN: 0596102119
EAN: 2147483647
Year: 2006
Pages: 267
Authors: Matt Neuburg

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