TIL, 2017-07-26

countries gem.
SecureRandom.random_number.
Thinking through how to implement my own version of Active Model Serializer or at least how it works.
GraphQL: The main problem with APIs is the multiple endpoints and multiple round trips.
I keep on forgetting freaking Enumerable#each_with_object but whatever.
ActionPack is made of ActionController and ActionDispatch.
Should I version every gem in the Gemfile?
Update codeclimate-test-reporter to 1.0.5.