omedale

class BinarySearchTree
  class Node
    attr_reader :key, :left, :right
#On initialization, the @key variable is set. This is used in the insert method below as the parent for the @left and @right nodes.
    def initialize( key )
      @key = key
      @left = nil
      @right = nil
    end

omedale

require 'csv'
require 'open-uri'

csv_text = open('http://www.vvv.hh.yyy.ggg/~hhhh/uuuu.csv')
csv = CSV.parse(csv_text, :headers=>true)
csv.each do |row|
  puts row
end

omedale

If you get error like this:

Running via Spring preloader in process 7662
/Users/zulh/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require': dlopen(/Users/zulh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle, 9): Library not loaded: /usr/local/opt/readline/lib/libreadline.6.dylib (LoadError)
  Referenced from: /Users/zulh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
  Reason: image not found - /Users/zulh/.rvm/rubies/ruby-2.3.1/lib/ruby/2.3.0/x86_64-darwin15/readline.bundle
	from /Users/zulh/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `block in require'
	from /Users/zulh/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:240:in `load_dependency'
	from /Users/zulh/.rvm/gems/ruby-2.3.1@useradmin/gems/activesupport-4.2.6/lib/active_support/dependencies.rb:274:in `require'

omedale

#!/bin/bash
# File: ~/launch.sh

# Original Code Reference: http://dan.doezema.com/2013/04/programmatically-create-title-tabs-within-the-mac-os-x-terminal-app/
# New-BSD License by Original Author Daniel Doezema http://dan.doezema.com/licenses/new-bsd/

# Modified by Luke Schoen in 2017 to include loading new tabs for Rails Server and automatically open webpage in browser.

# References: https://developer.apple.com/library/content/documentation/AppleScript/Conceptual/AppleScriptLangGuide/introduction/ASLR_intro.html

omedale

class Computer
  def initialize(computer_id,data_source)
    @id = computer_id
    @data_source = data_source
  end 
  
  def mouse
    info = @data_source.get_mouse_info(@id)
    price = @data_source.get_mouse_price(@id)
    result = "Mouse:#{info}($#{price})"

omedale

public static function createSlug($str, $delimiter = '-'){
    $slug = strtolower(trim(preg_replace('/[\s-]+/', $delimiter, preg_replace('/[^A-Za-z0-9-]+/', $delimiter, preg_replace('/[&]/', 'and', preg_replace('/[\']/', '', iconv('UTF-8', 'ASCII//TRANSLIT', $str))))), $delimiter));
    return $slug;
} 

omedale

# Violation of the Dependency Inversion Principle in Ruby
# The class Printer depends on classes PdfFormatter and HtmlFormatter which are low-level objects
class Printer
  def initialize(data)
    @data = data
  end

  def print_pdf
    PdfFormatter.new.format(@data)
  end

omedale

class Rectangle
  attr_accessor :height, :width
  
  def calculate_area
    width * height
  end
end

class Square < Rectangle
  def width=(width)

omedale

# This is a bad solution that violates open-closed principle
class Document
  def initialize(path, doc_type)
    @path = path
    @doc_type = doc_type
  end

  def parse
    case doc_type
    when :docx

omedale

#Violation of the Single Responsibility Principle in Ruby
class FinancialReportMailer
  def initialize(transactions, account)
    @transactions = transactions
    @account = account
    @report = ''
  end

  def generate_report
    @report = "Full Transaction History -> #{@transactions}"