Can a handler return multiple values? Using properties perhaps?

Scripting Forums AppleScript | Mac OS X
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#1

Something like this does:

display dialog "Example" default answer "text to return" buttons {"ok", "whatever"} default button 1
copy the result as list to {text_returned, button_pressed}

Currently I have a handler that looks something like this:


set Valueset1 to callHandler(1)
set Valueset2 to callHandler(2)

on callHandler(type)
---Stuff here

if type is "1" then
 return Valueset1
else 
 return Valueset2
end if

end callHandler

is it possible to do something like:

set Valueset1 to Valueset1 of callHandler(1)
set Valueset2 to Valueset2 of callHandler(2)

on callHandler(type)
	---Stuff here
	set Valueset1 to "blah"
	set Valueset2 to "Blah"
	if type is "1" then
		return Valueset1
	else
		return Valueset2
	end if
	
end callHandler

I am pretty sure it has something to do with properties, but I’m just not wrapping my head around it. Ideally for my purposes the return would be two lists within a list or something to that effect.
Result:
{{“valueset1”},{“valueset2”}}

Seems simple and really is there to eliminate calling the handler twice. Still, I’d like to know how.

The solution I am using is to create the list and just return it within the handler.


set Valueset to callHandler()


on callHandler()
	---Stuff here
---Valuesets are really lists themselves, but for the example:
	set Valueset1 to "blah"
	set Valueset2 to "Blah"
	
set Returnlist to {}
copy Valueset1 to end of Returnlist
copy Valueset2 to end of Returnlist
return Returnlist
end callHandler

I’m just curious to learn if there is a better way of going about it all.

#2 
on callHandler
	
	-- do stuff here
	
	return {{1, 2, 3}, {4, 5, 6}}
end callHandler

set {valueSet1, valueSet2} to callHandler
-- valueSet1 --> {1, 2, 3}
-- valueSet2 --> {4, 5, 6}

Is this what you are asking about?

Hope this helps,
Brad

#3

Yes, that is exactly what I was trying to get. Simple and effective.

Thanks!

:smiley:

#4

Bear in mind that the handler needs parentheses: call handler()


on callHandler()
	
	-- do stuff here
	
	return {{1, 2, 3}, {4, 5, 6}}
end callHandler

set {valueSet1, valueSet2} to callHandler()
-- valueSet1 --> {1, 2, 3}
-- valueSet2 --> {4, 5, 6}
#5

Opps! That’s what I get for doing it off the top of my head. Thanks for the correction Adam.

Brad

#6

The answer works if all elements of the lists are the same data type.
Is there some way I can get a handler to return a string text value and a Boolean?

#7

No problem to do that.

on callHandler()
	
	set aString to "blahblahblah"
	set aBoolean to true
	
	return {aString, aBoolean}
end callHandler

set {someString, someBoolean} to callHandler()


--> {"blahblahblah", true}

Yvan KOENIG running High Sierra 10.13.6 in French (VALLAURIS, France) jeudi 1 août 2019 20:11:46