Hi bradcathey,
I have found there is a difference between:
Do you mean the difference between being defined and undefined? 
my $var1;
# not printed because $var1 is not defined
print "var1: $var1\n" if defined $var1;

my $var2 = '';
# printed with $var2 as an empty string
# output var2: 
print "var2: $var2\n" if defined $var2;

my $var3 = 0;
# printed with $var3 set to 0
# output var3: 0 
print "var3: $var3\n" if defined $var3;

[download]
cheers,

In reply to Re^2: To initialise or not to initialise? by kiat
in thread To initialise or not to initialise? by kiat

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