functional-ish2.rb

module Timesheets

  class << self
    def text_to_fragment_list(text:)
      text.split(',')
    end

    def normalize_fragment_list(fragment_list:)
      fragment_list.map(&:strip)
    end

    def fragment_list_to_line(fragment_list:)
      {
        first_name: fragment_list[0],
        employee_id: fragment_list[1],
        office: fragment_list[2]
      }
    end

    def line_to_string(line:)
      [
        "Office: #{line[:office]}",
        "Employee ID: #{line[:employee_id]}",
        "First name: #{line[:first_name]}"
      ].join(', ')
    end
  end
end


File.open('timesheets.txt', 'r') do |file|
  file.
    each_line.
    lazy.
    map {|text| Timesheets::text_to_fragment_list(text: text)}.
    map {|fragment_list| Timesheets::normalize_fragment_list(fragment_list: fragment_list)}.
    map {|fragment_list| Timesheets::fragment_list_to_line(fragment_list: fragment_list)}.
    map {|line| Timesheets::line_to_string(line: line)}.
    each {|string| puts string}
end

timesheets.txt

Tony Stark, 1111, Desio, x1
Barry Allen, 2222, Desio, x2
Bruce Wayne, 3333, Desio, x3
Kal El, 4444, Desio, x4