renatamarques97

# Chapter 1 - Object-Oriented Design

1. The Problem Design Solves
  > It is the need for change that makes design matter.
  
2. Why Change is Hard
  > Parts interact to product behavior (objects), the interaction is made through messages passed between them.
  > Object-Oriented Design is about managing dependencies.
  > OOD - Set of coding techniques to arrange dependencies so objects can tolerate change.
  

renatamarques97

# @param {String} j
# @param {String} s
# @return {Integer}
def num_jewels_in_stones(j, s)
  jewels = j.split("")
  total = 0
  
  s.split("").each do |stone|
    total += 1 if jewels.include?(stone)
  end

renatamarques97

/*
  toPdf.js

  Gather all JPG, JPEG and PNG images in a folder and convert them to
  individual files in an output folder named after the source folder name

  $ node toPdf.js [source/folder/path]

  The script will, within the current directory, create a folder with the
  same name as the input folder and add all generated PDF files to it.