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Postings from June 2002
>>>>> "DS" == Dan Sugalski <dan@sidhe.org> writes: DS> At 6:10 PM -0700 6/16/02, Peter Scott wrote: >> It would be nice if one could say >> >> use Foo::Bar as Local::Foo::Bar >> >> as a way of expressing your proposal. DS> The one problem with that is modules that have multiple namespaces DS> in them. It's not too unusual for Foo.pm to have the packages Foo, DS> Foo::Bar, Foo::Bar::Baz, and Foo::Xyzzy in them. Which can DS> potentially lead to some interesting namespacing issues. and peter mentioned a possible solution, a remap namespace inside each module or namespace. when you are inside a given namespace (run or compile time), all sub-namespaces mentioned are remapped through the attached map. the use command could provide extra mapping info to handle complex modules like dan mentions. in normal cases there is no remap (only colliding spaces need this) so there is no speed or space penalty. and that seems to be a simple and reasonable solution. it could handle versioning too as you can remap a versioned module to its normal namespace: use Foo::Bar as Foo::Bar Version => 1.2.3 ; or something like that. maybe the version could be part of the module namespace itself: use Foo::Bar::1::2::3 as Foo::Bar ; meaning, any trailing namespaces that are all digits can be interpreted as a version. this also could work for 6pan and installiing a specific version. and it offers a possible name collision solution. install the colliding modules under different version numbers (but make them very far apart!). use Foo::Bar::1::2::3 as Foo::Bar ; # public module use Foo::Bar::1000 as Local::Foo::Bar ; # company module uri -- Uri Guttman ------ uri@stemsystems.com -------- http://www.stemsystems.com - Damian Conway Perl Classes -- July 1-3 -- http://stemsystems.com/class/ --- ----- Stem and Perl Development, Systems Architecture, Design and Coding ---- Search or Offer Perl Jobs ---------------------------- http://jobs.perl.orgThread Previous | Thread Next