DmitryBash

class Profile extends React.Component {
  render(props) {
    return <div>{props}</div>
  }
}

// Dumb component

function Profile(props) {
  return <div>{props}</div>

DmitryBash

Send email to multiple recipients

Send multiple emails to different recipients.

Mailer class

# app/mailers/notify_mailer.rb

class NotifyMailer < ApplicationMailer

DmitryBash

def query(params)
  # this magic method prepares sql and gets correct data from DB
  # NO CHANGES HERE
  puts "Params = #{params}"
  [
    {name: "John", surname: "Doe", age: 33},
    {name: "John", surname: "Doe", age: 34},
    {name: "John", surname: "Doe", age: 35}
  ]
end

DmitryBash

def reverse_array(arr)
  return arr if arr.empty?
  arr = arr.dup

  start_index = 0
  end_index = arr.length - 1

  while start_index < end_index
    arr[start_index], arr[end_index] = arr[end_index], arr[start_index]