You could try using
DO ^DIM
You would have to have
Set X="Set RESULT=$Get("_PREF_")"
to get ^DIM to evaluate the string properly. Does this make sense?
Jim
----- Original Message -----
From: "Kevin Toppenberg" <[EMAIL PROTECTED]>
To: "Hardhats Sourceforge" <[email protected]>
Sent: Saturday, February 11, 2006 6:43 AM
Subject: [Hardhats-members] Protecting against indirection errors.
I have a question about how to protect against indirection errors.
Imagine this function
MyFunct(pRef)
new result
set result=$get(@pRef)
quit result
Here are some possible inputs and results:
pRef
Input Output
------ ----------
#1 ^VA(200,1,0) IRM,[EMAIL PROTECTED]
#2 ^VA(200,1) ""
#3 ^VA(200,,0) <----- causes error.
In entry #2: if the data does not exist, then $get() protects against
a crash and returns a "" value.
But in entry #3, the indirection variable is invalid and causes an error.
Is there anyway for a function to protect itself against invalid
indirection errors, short of setting up an error trap? I can't think
of any reasonable way to try to validate input values other than
perhaps a simple test to ensure pRef'="" (which would only catch one
possible error).
Thanks
Kevin
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