Ed,
I believe the example uses the "?" conditional operator.
It works like this:
[test expression] ? [statement if true] : [statement if false]
The defined() function returns an integer, presumably 0 (false) or 1 (true).
I'll check with the programmers to see if there is supposed to be a newline
somewhere in this example. I believe there is supposed to be one before
'defined("var2") == 1'. That would make the example above make sense.
Best,
Bob Merrill
----- Original Message -----
From: "Konowal, Ed" <[EMAIL PROTECTED]>
To: "InterMapper Discussion" <[email protected]>
Sent: Friday, October 24, 2008 4:27 PM
Subject: [IM-Talk] Probe functions
I'm looking at probe functions and I don't understand the explanation
for function 'defined'
The help file (http://download.dartware.com/docs/DevGuide/) says...
FUNCTION defined(variable:STRING):INTEGER;
Examples: $var1 := 1; defined("var1") == 1 defined("var2") == 1 ?
"$var2 is defined" : "$var2 is undefined"
1) What does INTEGER have to do with defined? Is it needed?
2) The online example says $var2 is both defined and undefined... is
that a mistake?
3) What does defined("var1") == 1 mean? is "var1" the variable or the
STRING as shown in the help file above
"defined(variable:STRING):INTEGER".
____________________________________________________________________
List archives:
http://www.mail-archive.com/intermapper-talk%40list.dartware.com/
To unsubscribe: send email to: [EMAIL PROTECTED]
____________________________________________________________________
List archives:
http://www.mail-archive.com/intermapper-talk%40list.dartware.com/
To unsubscribe: send email to: [EMAIL PROTECTED]
