Re: Double-quotes and Bar-quotes
Re: Double-quotes and Bar-quotes
- Subject: Re: Double-quotes and Bar-quotes
- From: Luther Fuller <email@hidden>
- Date: Fri, 18 Sep 2009 19:01:10 -0500
On Sep 18, 2009, at 5:52 PM, Christopher Nebel wrote: On Sep 18, 2009, at 7:44 AM, Luther Fuller wrote: I just said ...
But, I can still use ...
tell application "System Events" to set value of property list item |ArchiveLastKnownLocation| of property list file (prefsFile as text) to the result
without error.
No I can't! It does not error, but it fails to write unless the bars are replaced with double-quotes.
So ... what's going on here?
You're confusing two very different uses of "quotes". The double quotes delimit a text constant, such as the name of a property list item. The bar quotes delimit an identifier that is, er, special in some way. [1] In the above sample, |ArchiveLastKnownLocation| is merely a variable, so I'm actually surprised that it doesn't just give you an "undefined variable" error.
I looked at more details of the behavior of these things this afternoon. After some simple experiments, I have concluded that the phrase property list item must always be followed by a string, the name of the item within double-quotes.
On the other hand, I have to write ...
|version| of defaultPrefsRecord
since version is a reserved word. I should have called it something else, but I didn't, so I seem to be stuck with |version| .
For a non-reserved word, I can use either as in ...
|ArchiveLastKnownLocation| of defaultPrefsRecord or ArchiveLastKnownLocation of defaultPrefsRecord
Now that my script complies with these rules, it seems to be working without error.
|
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