stangel

def bisect(start_num, end_num, test_proc)
  # calling test_proc(start_num, end_num) should raise an exception on failure
  legit_exceptions = [SystemExit, NoMethodError]
  initial_fail = nil

  begin
    test_proc.call(start_num, end_num)
  rescue Exception => e
    e.reraise if legit_exceptions.include?(e.class)
    initial_fail = true