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require 'active_model'

class Superhero
  include ActiveModel::Validations

  attr_accessor :name, :age

  def initialize **args
    @name = args[:name]

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class Arsenal
  def self.hello
    'Hello as class method!'
  end

   def mymy
     'Arsen Wenger'
   end

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require 'active_model'

class Superhero
  include ActiveModel::Validations
  @@total = []

  attr_reader :name, :age

  def initialize name, age
    @name = name

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set number

set relativenumber

call plug#begin('~/.vim/plugged')

Plug 'morhetz/gruvbox'
Plug 'vim-airline/vim-airline'
Plug 'preservim/nerdtree'
Plug 'ryanoasis/vim-devicons'

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1. Create file init.lua in C:\Users\your_name\AppData\Local\nvim\init.lua

2. Add to file init.lua parameters for tabs (for Python I use 4 spaces for identation):
  vim.cmd("set expandtab")
  vim.cmd("set tabstop=4")
  vim.cmd("set softtabstop=4")
  vim.cmd("set shiftwidth=4")
 
3. Add to init.lua configuration for lazy.nvim package manager
https://lazy.folke.io/installation

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Create a new VM with params for Arch Linux:
  - 4 Gb RAM
  - 20 Gb ROM
  Display:
    - Video memory: 128 Mb
    - Graphic controller: VMSVGA