require_relative'boot'require'rails/all'# Require the gems listed in Gemfile, including any gems# you've limited to :test, :development, or :production.Bundler.require(*Rails.groups)moduleDemoclassApplication<Rails::Application# Initialize configuration defaults for originally generated Rails version.config.load_defaults5.2# Settings in config/environments/* take precedence over those specified here.# Application configuration can go into files in config/initializers# -- all .rb files in that directory are automatically loaded after loading# the framework and any gems in your application.endend