http://John Kozlov/ ([identity profile] john kozlov) wrote in [personal profile] deniok 2016-04-07 02:10 pm (UTC)

Короче, я неправильно понял задание. Я прочитал f x = x как f x == x и задача кардинально изменила свой смысл. Поэтому и написал instance Eq

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