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I'm an average perl programmer. I haven't problem with the language itself, but with the " good " object design. While I'm able understand (most of) CPAN modules, without serious problems, i'm unable design myself even the simple object hierarchy. Example - now facing an really simple application (web and command line interface): the already authenticated student uploads a zip-file (what contains an rendering job) unzip the file to and new directory and check it's content (should contain exatly one file commands.txt ) and zero or more images if the content is OK - move the directory to place called: JobRepository (another directory) if the user decided to run the rendering job - send the job from his own JobRepository to global rendering queue (again, another directory) another process takes the jobs from the queue (fifo - designed with IPC::DirQueue ) and execute the rendering process when finished, put the result into the users JobRepository/result directory send email to the user the student can download the zipped results In bash it is doable with few " not to complicated " bash script - but i want do it in Perl (because web interface) - and want practice perlish (Moose) object design… And here starts my problems. Tried "visual" noun-analysis approach and make the next image. Posted the image, because it is "shorter" as: package Iren::JobRepo; use Moose; use warnings; has 'Jobs' => (is => 'rw', isa=>ArrayRef[Iren::Job]); … method AddJob { ... } etc.</p

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