cheatsheet を集めた cheat という gem があって、たまに便利である。 გ gem install cheat გ cheat assertions assertions: # Credit: http://nubyonrails.com/articles/ruby-rails-test-rails-cheat-sheet # Use 'cheat assert_raise' for more details # Standard Ruby Assertions assert boolean assert_equal expected, actual assert_raise *args assert_raises *args, &block … … cheat自身の使い方は გ cheat cheat どんなcheatsheetがあるのかは გ cheat sh