Railsのデバッグ用途のGem12個について概要を調べました better-errors binding_of_caller hirb hirb-unicode pry-byebug pry-doc pry-rails pry-stack_explorer quiet_assets rack-mini-profiler tapp view_source_map デバッグ用途のGemはGemfileの:developmentグループに登録します。 group :development do gem 'better_errors' gem 'binding_of_caller' gem 'hirb' gem 'hirb-unicode' gem 'pry-byebug' gem 'pry-doc' gem 'pry-rails' gem 'pry-stack_explorer' gem 'q