The most noticeable penalty of using for(;;) as a simple counting loop is that your code is less readable. Instead of using a C-ism that is unnecessary, why not just use while(1)? Or, while you're at it, why not just count in a more readable fashion? Which is more readable? 
my $sum = 0;
for (my $i = 0; $i <= $num; $i++) {
    $sum += $i;
}

#####

my $sum = 0;
foreach my $i (0 .. $num) {
    $sum += $i;
}

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To me, LOW and HIGH are very clearly stated in the foreach. In the for-loop, there are more characters involved. In addition, those characters are semi-colons. This is the only place in C (or Perl) where the semi-colon does not indicate the end of a thought. It, instead, indicates the end of a sub-thought. You have a rule, then you have an exception to the rule that's used everywhere! I understand why they did it, and I understand the syntactic reasons for it, too. But, I do not think of for-loops as three separate statements within a block construct. All other block constructs are one statement-one thought. Why should for be any different?!?

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In reply to Re: Re: Efficient Looping Constructs by dragonchild
in thread Efficient Looping Constructs by demerphq

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