jhawthorn · December 18, 2020 05:29
diff --git a/aoc_day_18_part2.rb b/aoc_day_18_part2.rb
 class Integer
  alias_method :add, :+
  alias_method :+, :*
  alias_method :*, :add
 end

 p File.readlines("data/18.txt").map {
  |l| eval(l.tr("+*", "*+"))
 }.sum
	class Integer
	alias_method :add, :+
	alias_method :+, :*
	alias_method :*, :add
	end

	p File.readlines("data/18.txt").map {
	\|l\| eval(l.tr("+", "+"))
	}.sum