FaisalAl-Tameemi

Topics covered

• Review of Rails Scopes & Namespacing

   namespace :admin do
       resources :reviews, only: [:index]
   end

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def mergesort(array)
    if array.count <= 1
        # Array of length 1 or less is always sorted
        return array
    end

    # Apply "Divide & Conquer" strategy

    # 1. Divide
    mid = array.count / 2

FaisalAl-Tameemi

JavaScript Prototypes

What's the difference between Ruby's classical OOP and Javascript's Prototypes?

A class in a formal classist language can be an object, but it’s a special kind of object with special properties and methods. It is responsible for creating new instances and for defining the behaviour of instances.

class SmartShoe

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Breakout Notes

Important Terms

• Method signature: The name of the method and its parameter list

• Method contract: Given some inputs, what are the side-effects of a method and what does it return

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# NOTE: 
# for basic data structures such as strings, boolean and integers, 
# please have a look at week 1 day 2 lecture notes

####################################################################

# ARRAYS: lists of things

# an array of names
names = ["Faisal", "Sara", "Jane"]

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Technical Interview Questions

In Ruby, when we create a class, we can define attribute accessor and attribute readers.

class Car

  attr_reader :model, :top_speed
 attr_accessor :current_speed

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require_relative('./vehicle')

class Car < Vehicle
  attr_reader :wheels

  def initialize(title, capacity, make_year, color, fuel_type, wheels)
    # remember: calling `super` alone will use the same set of parameters
    #           being passed into the current initialize when calling the parent's initialize
    super(title, capacity, make_year, color, fuel_type)
    @wheels = wheels

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ARGV in Ruby

What's ARGV?

ARGV is a convention in programming which refers to the “argument vector,” in basic terms a variable that contains the arguments / parameters passed to a program through the command line.

Typically an array with contains each argument in a certain position within the array. This may work differently in languages other than Ruby.

Example of ARGV

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class Cellphone < Product

  def initialize(name, price, brand)
    super
  end

end

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In the code below, is person is an Object or Class or Constructor? What's the difference ?

function Person(name,age) {
  this.name = name;
  this.age = age;
}

// a function that prints the name of any given person
var printPersonName = function (p) {