evmorov

arr = [0, 1, 2, 3, 5, 6]

puts Array(0..arr.size) - arr

evmorov

arr = [0, 1, 2, 3, 5, 6]

n = 0
n += 1 until arr[n] != n
puts n

evmorov

require 'net/http'

url = URI.parse('http://localhost:4567/pizza')
req = Net::HTTP::Get.new(url.to_s)
res = Net::HTTP.start(url.host, url.port) { |http| http.request(req) }
body = res.body
abort body if body != 'OK'

evmorov

require 'sinatra'

get '/pizza' do
  if rand(0..1).zero?
    'OK'
  else
    'Something is wrong'
  end
end

evmorov

grep -Eo '^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}' access.log | uniq -c | sort --reverse | head -n10

evmorov

<?xml version="1.0"?>
<root>
  <authorities>
    <authority>
      <originID>100</originID>
      <timestamp>2016-06-08T15:56:32</timestamp>
      <authorityName>authorityNameNew</authorityName>
      <INN>1234567890</INN>
    </authority>
  </authorities>

evmorov

require 'spec_helper'
require 'nokogiri'

describe 'Nokogiri' do
  let(:xml) do
    %(
    <root>
      <schools>
        <school>
          <id>1</id>

evmorov

class Student
  include HappyMapper
  tag 'student'
  has_one :name, String
  has_one :school_id, String, tag: 'schoolId'
end

class School
  include HappyMapper
  tag 'school'

evmorov

class School
  include HappyMapper
  tag 'school'
  has_one :id, String
  has_one :name, String
end

let(:schools) { School.parse(xml) }

it do

evmorov

let(:doc) { Nokogiri::XML(xml) }

it do
  school_id = doc.xpath('//school[name/text()="Second school"]/id').text
  student_names = doc.xpath("//student[schoolId/text()=#{school_id}]/name").map(&:text)
  expect(student_names).to match(%w(Alex Olivia))
end