On Dec 15, 2006, at 10:22 PM, Matisse Enzer wrote:
On Dec 15, 2006, at 7:52 AM, Chris Dolan wrote:
That can't be right. Negation does not contribute to complexity.
I think it is fair to say, that to a human, negation *can* increase
complexity:
if ( $foo ) {
# do something
}
is a little bit easier to understand than:
if ( ! $foo ) {
# do something
}
Instead, I believe it is the for loop and the exit points that
are increasing your count.
It certainly is possible to create a better, more sophisticated
measure of cyclomatic complexity - and I think you are probably
right, or at least "more right" in the way you are suggesting
complexity be counted. Perl::Metrics::Simple simply gives one
"point" for each of the following:
qw( ! && || ||= &&= or and xor not ? <<= >>= );
qw( for foreach goto if else elsif last next unless until while );
See the measure_complexity() method in
Perl::Metrics::Simple::Analysis::File
OK, I see. Perhaps I was distracted from your main point by mention
of cyclomatic complexity, which has a rather specific definition.
Chris
--
Chris Dolan, Software Developer, http://www.chrisdolan.net/
Public key: http://www.chrisdolan.net/public.key
vCard: http://www.chrisdolan.net/ChrisDolan.vcf
