kopylovvlad

require 'socket'

# run on localhost:3000
server = TCPServer.new('localhost', 3000)

loop do
  socket = server.accept
  request = socket.gets
  method, path = request.split
  sleep_time = rand(5)

kopylovvlad

require 'open-uri'

urls = [
  'https://www.google.com/',
  'https://www.youtube.com/',
  'http://www.rubyflow.com',
  'https://rubyonrails.org/'
]
# threads array
threads = []

kopylovvlad

require 'open-uri'
urls = [
  'https://www.google.com/',
  'https://www.youtube.com/',
  'http://www.rubyflow.com',
  'https://rubyonrails.org/'
]
urls.each do |url|
  resp = open(url)
  puts "#{url} has content length #{resp.read.size} symbols"

kopylovvlad

# Fibonacci sequence with recursion
def fib(number)
  if number < 0
    raise ArgumentError, 'fib(n) defined for number>=0'
  end

  return fib(number - 1) + fib(number - 2) if number > 1
  number
end

kopylovvlad

def foo(number, index = 1)
  # limit
  raise ArgumentError, 'number must be <= 10 000' if number > 10_000
  # exit
  return number.to_s if number == index
  # step
  index.to_s + ' ' + foo(number, index + 1)
end

kopylovvlad

puts 'hello'
puts 'end'

kopylovvlad

# before (legacy model)
# app/models/user.rb
class User < ActiveRecord::Base
  validates :name, length: { maximum: 100 }
  validates :lastname, length: { maximum: 100 }
  validates :patronymic, length: { maximum: 100 }
  
  before_save :capitalize_name!, :if => :name_process_needed?
  
  private

kopylovvlad

# Before
module SearchService1
  # Metrics/AbcSize: Assignment Branch Condition size for perform is too high.
  # Metrics/CyclomaticComplexity: Cyclomatic complexity for perform is too high.
  # Metrics/MethodLength: Method has too many lines.
  # Metrics/PerceivedComplexity: Perceived complexity for perform is too high.
  def self.perform(params = {})
    scope = ::User.active

    if params['id'].present?

kopylovvlad

# before
module Main
  def self.convert(file, format)
    if format == 'png'
      PngGenerator.generate(file)
    elsif format == 'gif'
      GifGenerator.generate(file)
    elsif format == 'bmp'
      BmpGenerator.generate(file)
    elsif format == 'tiff'

kopylovvlad

# Before
# Metrics/MethodLength: Method has too many lines. [13/10]
def foo1(number)
  if number == 1
    'one'
  elsif number == 2
    'two'
  elsif number == 3
    'three'
  elsif number == 4