[2023][ruby][10.x] one more comment

12 months ago · ed02032839
parent a3706096c3
commit ed02032839
1 changed files with 1 additions and 0 deletions
--- a/2023/ruby/day_10.rb
+++ b/2023/ruby/day_10.rb
@ -84,6 +84,7 @@ p y_range.sum {|y|
    a = loop_.fetch([y, x_a], nil)
    b = loop_.fetch([y, x_b], nil)
    # it's a chunk if it's multiple empty tiles or a pipe that goes east
    (a.nil? && b.nil?) || (a && TILE_NEIGHBOR_DELTAS.fetch(a).include?([0,1]))
  }.select {|chunk|
    # keep empty tiles