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Modules

To understand modules, we first have to understand a little bit about how Ruby works. So, lets define the things that exist in Ruby and see how they work together. Then, we will be able to understand how modules fit into this, and what they are here for.

Definitions

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Studying for a Tech Interview Sucks, so Here's a Cheat Sheet to Help

This list is meant to be a both a quick guide and reference for further research into these topics. It's basically a summary of that comp sci course you never took or forgot about, so there's no way it can cover everything in depth. It also will be available as a gist on Github for everyone to edit and add to.

Data Structure Basics

###Array ####Definition:

• Stores data elements based on an sequential, most commonly 0 based, index.
• Based on tuples from set theory.

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require 'uri'
require 'net/http'
require 'fileutils'

BASE = "http://openclassroom.stanford.edu/MainFolder/courses/HCI/videos/"

for l in 1..42 do

  for p in 1..20 do
    uri = "CS147L" + l.to_s + "P" + p.to_s + ".flv"