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".
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