laurenhavertz

a.shift(8) = will create a new array and store it to memory

linked list: need a node structure and connected to other elements need anohter data type to keep track

definining the relationships through one another

advantages: less expensive, each node has its own properties

• singly link list

laurenhavertz

• base 10 = [0,1,2,3,4,5,6,7,8,9] => 10 options

• base 2= [0,1] => 2 options

• more numbers represented in base 10

• computer is complicated system of on and off gates

• opening and closing certain switches

goes in spots of 2(squared)

laurenhavertz

scope: attached to the model. Can be used in any part of rails or can be included with any association

ex. ` scope: completed, lambda { where(completed: true) }
      # @list.items.completed.alphabetically
      scope: completed. 


collection proxy: Finders
- `class Item < AR::Base `
- inherits from active record

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laurenhavertz

• object literals dog = {}
• constructor notion = var Dog = Action () var Dog = function (name, breed) { this.name = name this.breed = breed this.bark = function() { console.log('ruff ruff'); } }

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CONTROLLER ACTIONS

ITEMS CONTROLLER

1. Create a User Controller rails g controller users in the terminal

• Consider what you want your controller methods to do!

2. Create a 'show' method def show @user = User.find(params[:id]) end

laurenhavertz

• event driven computing:
• multi-threaded process: create a new process for each incoming request (OLD WAY)
• node.js: server side architechture (one single application)
  • should never wait for anything on the server side
  • process goes out from the database and blocks (waiting for request, TRADITIONALLY) - works now because hardware is so fast and so cheap/working for the wrong reasons
  • leveraging event driven computing from client
  • uses callbacks so knows then the server is done /returned by the name of callback ("success")
• node.js has event loop: throw event into loop, get qued up, and when they are done, event loop knows that to do with the result(provided callback already)

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PreReqs:

• install image magick brew install imagemagick <- in the terminal
• gem install paperclip
• gem install aws-sdk
• think if you want 2 buckets: 1 for development and 1 for production

1. rails new paperclip demo
2. add gems to the Gemfile gem 'paperclip' gem 'aws-sdk'

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Unit Test

• test one method at a time
• test one file at a time

Integration Test

• view tests
• think about user

Other uses

• can test filling in _forms

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Things to consider

• what do you want to build?
• what do you want your project to have? ie. do you want your app to save data? are you using an APi?

1. Create a visual model and relationships between them
2. Create views (what pages do you want to see? what do they contain?)
3. In the terminal rails new rtodo
4. Move into new "Rtodo" folder cd rtodo
5. open directory in sublime subl .
6. Create User model rails g model user MAKE SURE THIS IS SINGULAR