n bottles of beer on the wall in ruby using only anonymous functions.

nbeers.rb

puts ->() { # print out the result
script = ->(b) { # accessory funciton to beer improver to improve readability.
  puts "#{b} bottles of beer on the wall. #{b} bottles of beer."
  puts "you take one down, pass it around, #{b-1} bottles of beer on the wall."
}
beer_improver = ->(partial) { # a function that does any one bottle of beer on the wall.
  ->(n) { n.zero? ? "no more bottles" : ->(b) {script.(b); return partial.(b)}.(n-1)}}

y = ->(improver) { # Church's Y-Combinator.
  ->(gen) { gen.(gen) }.(->(gen) {beer_improver.(->(v) {gen.(gen).(v)})})}

y.(beer_improver).(100) # how many beers.
}.()