Re^2: defined or undef

I am attempting to return a list, because getElementsByTagName retruns a list. In this case the list sould contain one item.

my @rtnVal = undef;
is adding an undefined element to the @rtnVal array? Oh my. Not what I expected.

Is this valid code
print ( @rtnVal ? " defined \n" : " undefined \n" );

Please take a look at your suggested code. I do believe that your second suggestion is what I have.

thanks for your quick reply.

kd

Comment on Re^2: defined or undef

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Re^3: defined or undef by ikegami (Patriarch) on Oct 30, 2007 at 15:20 UTC
Undefined is a special scalar value. It makes no sense to call an array undefined, so that should read `print ( @rtnVal ? " not empty \n" : " empty \n" );` Whether `getElementsByTagName` returns an list or not is irrelevant. I was asking what did you want `getCBLValue` to return.	[reply] [d/l] [select]
Re^4: defined or undef by kevind0718 (Scribe) on Oct 30, 2007 at 15:49 UTC
as you suggested I have been using print ( @rtnVal ? " not empty \n" : " empty \n" ); in many places. I expect getCBLValue to return a list. Maybe I should declare @rtnVal as follows: my @rtnVal ; And see what happens. kd	[reply]
Re^5: defined or undef by kevind0718 (Scribe) on Oct 30, 2007 at 15:56 UTC
yes if I just declare @rtnVal as follows: my @rtnVal; It works. Must check the rest of my code for this mistake. many thanks for your assistance kd	[reply]