Re: Return from Handler... What am I Missing Here?
Re: Return from Handler... What am I Missing Here?
- Subject: Re: Return from Handler... What am I Missing Here?
- From: Deivy Marck Petrescu <email@hidden>
- Date: Sat, 17 Oct 2015 14:16:38 -0400
On Oct 17, 2015, at 1:22 PM, S. J. Cunningham <email@hidden> wrote:
> Another rookie error, I suppose. Why does the first case work and the second fail?
>
> -- Case 1
> handlerName()
> if errNum of the result ≠ 0 then
> display dialog "Error " & errNum of the result & ": " & errMsg of the result
> else
> display dialog "No Error"
> end if
> --> "Error -1: x"
>
> -- Case 2
> if errNum of handlerName() ≠ 0 then
> display dialog "Error " & errNum of the result & ": " & errMsg of the result
> return
> end if
> display dialog "No Error"
> --> Runtime Error: "Can’t make errNum of "x" into type Unicode text."
>
> on handlerName()
> set yyy to "x"
> return {errNum:-1, errMsg:yyy}
> end handlerName
>
> Steve
> ------------------
> OS X 10.6.8, AppleScript 2.1.2
>
> _______________________________________________
Actually there was something surprising (at least to me) about the "result" (pun intended).
I was not aware that a handler would behave this way.
Here is the script
if errMsg of handlerName() ≠ "y" then
set k to result
display dialog "k is " & k
end if
-->"k is y"
set g to handlerName()
g's errNum
---> -1
on handlerName()
set yyy to "x"
set zzz to "y"
return {errNum:-1, errMsg:yyy}
end handlerName
So if you act on the handler, as in the first line of the script, the result of that operation is the last variable declared on the handler.
I never new that!
Deivy
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