Parse typing practice stats

parse_typing_stats.rb

open ARGV.first do |file|
  avg = lambda do |data, slot|
    data.inject(0.0) do |sum, datum|
      sum + datum.send(:[], slot).to_i
    end / data.size
  end

  data = file.read.split(/\n\n## /).map do |round|
    round.gsub!(/.*\n\n/, "")
    round.split(/\n/).map do |row|
      value = row.split(": ").last
      if value.include?(":")
        minutes, seconds = value.split(":").map(&:to_i)
        value = minutes * 60 + seconds
      end
      value
    end
  end

  puts "Rounds: #{ data.size }"
  puts "WPM: #{ avg[data, 0] }"
  puts "Time: #{ avg[data, 1] } seconds"
  puts "Correct: #{ avg[data, 2] }"
  puts "Incorrect: #{ avg[data, 3] }"
  puts "Accuracy: #{ avg[data, 2] / (avg[data, 2] + avg[data, 3]) }"
end