Yes sir there is! And it's quite a goober if you ask me, but very useful.
I'll show the difference by example.
my $SOME_CONSTANT = 2; # NO MAGIC NUMBERS! (hehe)
my $pre_increment = 0;
my $post_increment = 0;
my $pre_result = ++$pre_increment + $SOME_CONSTANT;
my $post_result = $post_increment++ + $SOME_CONSTANT;
# Notice the the ++ either before or after does incremement the variable by
# one, but ++$pre_increment does the incremental operation FIRST before then
# adding $pre_increment to $SOME_CONSTANT
# $post_increment++ does the opposite, it addes $SOME_CONSTANT to the
# pre-existing value in $post_increment, then it incremements by one.
# So, again, both as an end result are incremented by ONE, but their
# precedence is different within an EXPRESSION
print $pre_increment; # will print '1'
print $post_increment; # will print '1'
print $pre_result; # will print '3'
print $post_result; # will print '2'
To Confusing?? I've been told i am not the best teacher....so maybe someone
else on the list could help you more if this doesn't..
-Chris
On Friday 06 December 2002 10:54 am, you wrote:
> Hiya,
>
> is there any difference between $count++ and ++$count?
> Just wondering.
>
> Thanks.
>
>
>
>
>
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