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#1 Dec. 5, 2010 14:04:57

Stefan M.
Registered: 2009-11-02
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Traits and Conflicts: Collisions as Warnings or Fatal?


Hi:

While preparing some explanations on how to use traits, I stumbled over an
inconsistency in the current implementation.

Currently collisions, if they are explicit in the code, lead to a warning and
are resolved by explicit exclusion of the two methods that collide.
However, there are other ways to provoke a collision, for instance by
introducing a new alias during composition.

http://svn.php.net/viewvc/php/php-src/trunk/Zend/tests/traits/error_015.phpt?revision=305512&view=markuphttp://svn.php.net/viewvc/php/php-src/trunk/Zend/tests/traits/language010.phpt?revision=305512&view=markupCollisions usually point to implementations that changed unexpectedly, and the
implicit resolution might be problematic since it could hide the real cause for
a bug.

So, should that warning be changed to a fatal error, or should the other fatals
be warnings, too?

Best regards
Stefan

--
Stefan Marr
Software Languages Lab
Vrije Universiteit Brussel
Pleinlaan 2 / B-1050 Brussels / Belgiumhttp://soft.vub.ac.be/~smarrPhone: +32 2 629 2974
Fax: +32 2 629 3525



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