• Open Menu Close Menu
  • Apple
  • Shopping Bag
  • Apple
  • Mac
  • iPad
  • iPhone
  • Watch
  • TV
  • Music
  • Support
  • Search apple.com
  • Shopping Bag
 

Lists

Open Menu Close Menu
  • Terms and Conditions
  • Lists hosted on this site
  • Email the Postmaster
  • Tips for posting to public mailing lists
Re: "where its" vs "whose"
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: "where its" vs "whose"


  • Subject: Re: "where its" vs "whose"
  • From: Axel Luttgens <email@hidden>
  • Date: Mon, 29 Aug 2016 10:02:09 +0200

> Le 27 août 2016 à 16:52, Mitchell L Model a écrit :
>
> 	tell application "Safari"
> 		every window where its document is not missing value
> 		every window whose document is not missing value
> 	end tell
>
> I am getting the correct result for the first "every" and an error on the second.
> I believe i have always used "where its" and "whose" interchangeably.
> Or maybe not — I almost always use "whose" and used "where its" as part
> of a solution someone sent me for a different problem.
>
> What’s the difference and why?

Hello Mitchell,

Strictly speaking, keywords "where" and "whose" are synonyms; as a result, if an expression fails with one of these keywords, it should fail with the other as well.

And this is indeed the case:

	tell application "Safari"
		every window where document is not missing value
		every window whose document is not missing value
	end tell

But then, if making use of "its" solves the "problem" for one of these keywords, it should solve the problem with the other keyword too.

And yes, it "works":

	tell application "Safari"
		every window where its document is not missing value
		every window whose its document is not missing value
	end tell

Note that in the context of filter references, "whose" (or "where") and "its" (or "of it") have unrelated roles:

	- the former allows to build the boolean expression to be satisfied
	- the latter allows to make explicit the filter’s target

so that, for example, "where" and "where its" are not synonyms.

In the case of Safari, "document" is the name of a class, the name of an application’s elements and the name of a window’s property (all of these items having seemingly the same underlying code 'docu'):

	tell application "Safari"
		class of first document
		documents
		document of windows
	end tell

HTH,
Axel




 _______________________________________________
Do not post admin requests to the list. They will be ignored.
AppleScript-Users mailing list      (email@hidden)
Help/Unsubscribe/Update your Subscription:
Archives: http://lists.apple.com/archives/applescript-users

This email sent to email@hidden


  • Follow-Ups:
    • Re: "where its" vs "whose"
      • From: Deivy Petrescu <email@hidden>
References: 
 >"where its" vs "whose" (From: Mitchell L Model <email@hidden>)

  • Prev by Date: Re: Exiting an app with an infinite loop?
  • Next by Date: Re: "where its" vs "whose"
  • Previous by thread: Re: "where its" vs "whose"
  • Next by thread: Re: "where its" vs "whose"
  • Index(es):
    • Date
    • Thread