Jim has said what I was about to (with reference to Namespaces and Subclasses), but let me add my $0.02: The name (space) has nothing to do with implementation technique. It has to do with the problem being solved, or the API. One should not assume that every module in a namespace is a subclass of that namespace. Many infact use aggregation or containment to solve the problem.
Date::Calc::Day::Iterator or Date::Calc::DayInterator would be good choices. I think it _is_ useful to get the word 'Day' in there, since someone _could_ come along and choose to implement Date::Calc::Hour::Iterator... (or HourIterator) .. (you would be setting the pattern I would think) etc. If it were just ::Iterator that would be precluded. Lincoln On Tue, 2003-12-23 at 10:34, Jim Cromie wrote: > Marco Marongiu wrote: > > > > > And, last, there is a proposal to rename it to Date::Calc::Iterator > > > > Date::Iterator is not a subclass of Date::Calc: it *uses* it; and > > Date::Calc as a namespace for my module is just confusing: my modules > > Iterates over Dates, fullstop. The "Calc" part is confusing. > > > Derivation/sub-classing is not the only reason to choose a namespace. > Delegation/has-a relationships (for one) are also a good reason, and it > sounds like your module > fits this case. > > Namespaces are not about implementation (which is what derivation is doing), > theyre about interfaces. And for humans, knowing where to find those > modules. > > Mazda-RX-8 has a Wankel motor in it - does that make it > different enough to not be a Car ? Of course not. You drive it just > like every other > car. Is a minivan a car ? an SUV ? YES. Should they be under CAFE ? > (Corporate Average Fuel Economy - Congressional law) *Absolutely* > > > so wrt finding Date::Calc::Iterator, how would one go about it ? > search.cpan.org ! > and what are your search criteria ? *Date*, *Iterator* > > I just searched Iterator, and hit several with it as the 3rd level name- > > *File::Find::Iterator* > <http://search.cpan.org/author/TEXMEC/File-Find-Iterator-0.3/Iterator.pm> > *XML::LibXML::Iterator* > <http://search.cpan.org/author/PHISH/XML-LibXML-Iterator-1.00/lib/XML/LibXML/Iterator.pm> > *Test::Harness::Iterator* > <http://search.cpan.org/author/RCAPUTO/POE-0.27/lib/Test/Harness/Iterator.pm> > > So sticking Calc in there's not gonna make it any less 'found', > It adds info wrt your dependency, and it keeps Date::* a little less > cluttered. -- Lincoln A. Baxter <[EMAIL PROTECTED]>
