>>805-806
rubyだとこうだけど

ruby-1.9.2> ("0".."10").to_a.join(" and ")
=> "0 and 1 and 2 and 3 and 4 and 5 and 6 and 7 and 8 and 9 and 10"

例えるならPythonだと

> " and ".join(("0".."10").to_a)
=> "0 and 1 and 2 and 3 and 4 and 5 and 6 and 7 and 8 and 9 and 10"

こうだよねって話