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meetodite (2) kogu programmikeeltes

Wiktionary:
2. (object-oriented programming) an uninstantiable collection of methods that provides functionality to a class by using the class’s own interface

ülevaateid
https://en.wikipedia.org/wiki/Trait_(computer_programming)
http://php.net/manual/en/language.oop5.traits.php
https://www.culttt.com/2014/06/25/php-traits/
https://accu.org/index.php/journals/442