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https://api.rubyonrails.org/v5.1/classes/ActiveSupport/Concern.html
module Bar include Foo def self.included(base) base.method_injected_by_foo end end class Host include Bar end Unfortunately this won't work, since when Foo is included, its base is the Bar module, not the Host class. With ActiveSupport::Concern, module dependencies are properly resolved:
https://guides.rubyonrails.org/active_support_core_extensions.html
Active Support Core ExtensionsActive Support is the Ruby on Rails component responsible for providing Ruby language extensions, utilities, and other transversal stuff.It offers a richer bottom-line at the language level, targeted both at the development of Rails applications, and at the development of Ruby on Rails itself.After reading this guide, you will know: What Core Extensions are. How ...
https://stackoverflow.com/questions/1986386/check-if-a-value-exists-in-an-array-in-ruby
Check if a value exists in an array in Ruby. Ask Question Asked 10 years, ... While Ruby doesn't include #in? in it's core, if you are using Rails, ... As described in this answer, the method in? requires ActiveSupport to be imported: require active_support. – Patrick Jun 26 '19 at 6:22.
https://stackoverflow.com/questions/10355477/is-there-an-opposite-of-include-for-ruby-arrays
Is there an opposite of include? for Ruby Arrays? Ask Question Asked 7 years, 3 months ago. Active 6 months ago. Viewed 99k times 167. 9. I've got the following logic in my code: ... ActiveSupport adds the exclude? method to Array, Hash, and String. This is not pure Ruby, but is used by a LOT of rubyists.
http://engineering.appfolio.com/appfolio-engineering/2013/06/17/ruby-mixins-activesupportconcern
Jun 17, 2013 · A few people have asked: what is the dealio with ActiveSupport::Concern? My answer: it encapsulates a few common patterns for building modules intended for mixins. Before understanding why ActiveSupport::Concern is useful, we first need to understand Ruby mixins. Here we go...! First, the Rub
https://github.com/CocoaPods/CocoaPods/issues/4711
Dec 31, 2015 · @dmitriyborodko, thanks!I made sudo gem install -n /usr/local/bin cocoapods and installed 12 gems, and then made sudo gem install activesupport -v 4.2.6 with this message
https://github.com/rails/rails/tree/master/activesupport
Feb 19, 2018 · 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 …
https://ruby-china.org/topics/21501
Aug 31, 2015 · Ruby ruby include extend prepend ... ActiveSupport::Concern 这个module代码不多，看到相关使用的时候引出了上面的一系列问题，4.1.5版本的代码贴在下面，来逐行解析： module ActiveSupport module Concern #定义了一种错误类型，在一个extend Concern的类中如果多次使 …
https://guides.rubyonrails.org/active_model_basics.html
Active Model BasicsThis guide should provide you with all you need to get started using model classes. Active Model allows for Action Pack helpers to interact with plain Ruby objects. Active Model also helps build custom ORMs for use outside of the Rails framework.After reading this guide, you will know: How an Active Record model behaves. How Callbacks and validations work. How serializers ...
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