http://sassa-nf.livejournal.com/ ([identity profile] sassa-nf.livejournal.com) wrote in [personal profile] deniok 2016-01-16 11:28 pm (UTC)

1. mfap ff x = fmap ($ x) ff -- так что, первое "да"

2. mfap не предлагает гарантий сохранения алгебраической структуры, так что, fmap нельзя выразить

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