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Re: myLoop: getting subject of messages in Mail.app
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Re: myLoop: getting subject of messages in Mail.app


  • Subject: Re: myLoop: getting subject of messages in Mail.app
  • From: Bill Briggs <email@hidden>
  • Date: Mon, 3 Mar 2003 19:48:46 -0400

At 3:37 PM -0800 03/03/03, cricket wrote:
On Monday, March 3, 2003, at 3:24 PM, Bill Briggs wrote:

You need to evaluate 'all messages of front message viewer' first before you can start iterating through it as a list. Putting a 'get' in front of it causes that evaluation to happen. Before being evaluated, think of 'all messages of front message viewer' as being a reference to one thing that has not yet been evaluated, rather than a list of already evaluated message objects.

By that line of argument the behaviour of "Scriptable Text Editor", which still stands as a model of good AppleScript implementation, is wrong. Witness.

tell application "Scriptable Text Editor"
make new document -- no location reference necessary, nor should it be
set pRef to (make new paragraph at end of document 1) -- location reference makes sense here
set text of pRef to "I am the text!"
text of pRef -- returns correct text
text of last paragraph of document 1 -- returns correct text
last character of document 1 -- returns expected character
third character of last paragraph of document 1 -- returns expected char
end tell

You're right given your examples here, but the original poster had a repeat loop which assigned a variable to an unevaluated expression, which, when evaluated, returns a list.

The repeat loop is irrelevant. The line was

set allMsg to all messages of front message viewer

but I fail to see how evaluating this is any different from evaluating this

characters 1 through 6 of last paragraph of document 1

which in my Scriptable Text Editor exampl returns a list as well. The fact that it's a list is also irrelevant. Both of these are nothing more or less complicated than references to objects. Again, I assert that there's no reason for one to write such a thing in a script if the intent was not to have it evaluated. Convince me otherwise. No quibbles please.


There are cases where a get is absolutely required if you want to accomplish something in a single Applescript statement.

In this case it's required because the scripting implementation isn't according to Hoyle. Which is what JD is trying to convince you of.

- web
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  • Follow-Ups:
    • Re: myLoop: getting subject of messages in Mail.app
      • From: John Delacour <email@hidden>
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      • From: cricket <email@hidden>
References: 
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