app_store.rb

module AppStore
    
   App = Struct.new(:name, :developer, :version)
    
    APPS = [
        App.new(:Chat, :facebook, 2.0),
        App.new(:Twitter, :twitter, 5.8),
        App.new(:Weather, :yahoo, 10.15)
        ]
        
    def sel.fin_app(name)
        APPS.find { |app| app.name == name }
    end
        
end