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REFERENCES
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http://ndpsoftware.com/git-cheatsheet.html

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BASIC
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These need to be backed up by a migration to create the assemblies_parts table. This table should be created without a primary key:

class CreateAssembliesPartsJoinTable < ActiveRecord::Migration
  def change
    create_table :assemblies_parts, id: false do |t|
      t.integer :assembly_id
      t.integer :part_id
    end
 end

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class Book < ActiveRecord::Base
  # Other stuff should go up here, the following is an example of attr_accessible to allow mass assignment
  # Mass assignment is when you do something like Book.create(title: "1984")
  attr_accessible :title
end

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The following is reference material, and not required reading. For a deeper understanding however it is recommended. For some topics, multiple links have been provided to give different explainations and viewpoints on the topics.

ActiveRecord Naming:

• http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Naming

ActiveRecord Migrations:

• http://api.rubyonrails.org/classes/ActiveRecord/Migration.html
• http://en.wikibooks.org/wiki/Ruby_on_Rails/ActiveRecord/Migrations

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class AddUniquenessIndexToYears < ActiveRecord::Migration
  def change
    add_index :years, [:award_id, :book_id], :unique => true
  end
end

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function calculateHeight(startPoint, endPoint) {
  // This function has access to startPoint and endPoint. Nothing else does. 
	return Math.abs(startPoint - endPoint)
}

function calculateWidth(startWidth, endWidth) {
	// Function arguments act as local. ie. startWidth here is local
	// This function has access to startWidth and endWidth. Nothing else does. 
	// Does this have access to a, b, x, y? No
	// Does this have access to q? No

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// String literal, string primitive
// This is not an object
// This doesn't have any of its own functions
var schoolName = "General Assembly"

// When I call this, it temporarily makes a String Object around it. 
// Slower. I'll talk about why in a second
var upperCaseSchoolName = schoolName.toUpperCase

/*

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var checkingBalance = 0;
var savingsBalance = 0;

// replace window.onload
$(function() {
  $("#checkingDeposit").click(depositChecking);
  $("#savingsDeposit").click(depositSaving);
  $("#checkingWithdraw").click(withdrawChecking);
  $("#savingsWithdraw").click(withdrawSaving);
  updateDisplay();

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require 'tweetstream'

TweetStream.configure do |config|
config.consumer_key       = 'YOUR-KEY'
config.consumer_secret    = 'YOUR-SECRET'
config.oauth_token        = 'YOUR-OAUTH'
config.oauth_token_secret = 'YOUR-OAUTH-SECRET'
config.auth_method        = :oauth
end

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$(window).scroll(function() {
        // Cache our jQuery selector for window
        var win = $(window);

        // Infinite scroll math!
        if(win.height() + win.scrollTop() >= $(document).height()) {
            populateCountries();
        }
    });