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This alias overrides Class#subclasses. Thus calls to `subclasses` get a free performance boost when the class extends DescendantsTracker. |
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= Active Support -- Utility classes and Ruby extensions from Rails Active Support is a collection of utility classes and standard library extensions that were found useful for the Rails framework. These additions reside in this package so they can be loaded as needed in Ruby projects outside of Rails. You can read more about the extensions in the {Active Support Core Extensions}[https://edgeguides.rubyonrails.org/active_support_core_extensions.html] guide. == Download and installation The latest version of Active Support can be installed with RubyGems: $ gem install activesupport Source code can be downloaded as part of the Rails project on GitHub: * https://github.com/rails/rails/tree/master/activesupport == License Active Support is released under the MIT license: * https://opensource.org/licenses/MIT == Support API documentation is at: * https://api.rubyonrails.org Bug reports for the Ruby on Rails project can be filed here: * https://github.com/rails/rails/issues Feature requests should be discussed on the rails-core mailing list here: * https://discuss.rubyonrails.org/c/rubyonrails-core