Re^2: To initialise or not to initialise?

[kiat]

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;

cheers,