Advent of Code, day 8

day8.rb

r/bin/env ruby

# http://adventofcode.com/day/8

class Literal

  def initialize(line)
    @s = line.chomp
  end

  def literal_size
    @s.size
  end

  def memory_size
    unescape.size
  end

  def escaped_size
    escape.size
  end

  private

  def unescape
    eval(@s)
  end

  def escape
    @s.inspect
  end
   
end

lines = File.readlines("input")
literals = lines.map { |line| Literal.new(line) }
total_literal_size = literals.map(&:literal_size).reduce(&:+)
total_memory_size = literals.map(&:memory_size).reduce(&:+)  
total_escaped_size = literals.map(&:escaped_size).reduce(&:+)

# part1
puts total_literal_size - total_memory_size

# part2
puts total_escaped_size - total_literal_size