kangkyu

    - if flash[:notice]
      = content_tag(:div, class: ["alert", "alert-info", "alert-dismissible"], role: "alert", id: "notice") do
        = content_tag(:button, class: "close", type: "button", "data-dismiss"=> "alert") do
          = content_tag(:span, escape_once("×"), "aria-hidden"=> "true")
          = content_tag(:span, "Close", class: "sr-only")
        = flash[:notice]

kangkyu

print "the first number: "
a = gets.chomp
print "operator: "
operator = gets.chomp
print "the second number: "
b = gets.chomp

answer = case operator.ord
  when 43 then a.to_i + b.to_i
  when 45 then a.to_i - b.to_i

kangkyu

lesson 2 Quiz

1. Name all the 7 or 8 routes exposed by the resources keyword in the routes.rb file. Also name the 4 named routes, and how the request is routed to the controller/action.

	name_routes	action	

GET	posts_path 	posts#index		
GET	post_path	posts#show
GET	new_post_path	posts#new
POST			posts#create	

kangkyu

1. why do they call it a relational database?
because they have join and association between tables.

(solution: because the tables within the database are associated with each other. This association can be created with primary and foreign keys and various syntax.)

2. what is SQL?
language used in all database systems

(solution: SQL stands for "structured query language" and it is used to manage operations of a relational database.)