再帰と retry の比較

retry_vs_recursive.rb

def a(i = 0)
  print 0x08.chr * i.to_s.size; print i
  raise if i < 100000
rescue
  i += 1
  retry
end

def b(i = 0)
  print 0x08.chr * i.to_s.size; print i
  raise if i < 100000
rescue
  b i + 1
end

a; puts
b; puts