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Re^6: MooseX obscure error and importance of Unit Testing (new tools)

by tye (Cardinal)
on Aug 16, 2012 at 07:49 UTC ( #987707=note: print w/ replies, xml ) Need Help??


in reply to Re^5: MooseX obscure error and importance of Unit Testing (tools)
in thread MooseX obscure error and importance of Unit Testing

When I first saw ClassName::->new() proposed as a way to prevent ambiguous interpretation of ClassName->new(), it was shortly revealed that it didn't actually result in unambiguous parsing. It sounds like Perl's parsing may have been changed to improve that.

I'd actually rather more improvements be done so ClassName->new() is unambiguous [or at least generates a warning when it isn't unambiguously 'ClassName'->new()]. I'd much prefer to have to actually write (the first "()" in) Function()->new() when that is what I want. That turned out to be the sane thing for both $hash{BareWord} and BareWord => $value, despite it taking years to realize that.

For now, I'm not just yet going to run off and adopt the new fad considering the history of the many things in Perl that I've been told I should just stop using the old alternatives to, only to later find the new "must use" feature getting seriously down-graded, often out-right deprecated: v strings, pseudo hashes, base.pm, version.pm, Switch.pm, LVALUE subs, inside-out objects, source filters (actually, that last one became unpopular almost as soon as it became possible).

Then there are the things that I've already realized serious problems with that the broader community may eventually clue in to: using inheritance for things like Exporter / AutoLoader / DynaLoader, 'use warnings' in modules or in test suites, given/when, 'smart' match (it smarts!), { ... redo ... }, inheritance, my $x = shift, objects as glorified hashes, Moose, MooseX::Declare (wait, I already said "source filters"). I'm sure I'm leaving a few out. :)

But I'll keep it in mind. I appreciate the reminder of this potential pit-fall and the note about the compile-time warning.

- tye        


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