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Опечатка или я чего-то не понимаю (Монады) #94

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cyberash-dev opened this issue May 4, 2019 · 1 comment

cyberash-dev commented May 4, 2019

http://anton-k.github.io/ru-haskell-book/book/15.html#%D0%BC%D0%BE%D0%BD%D0%B0%D0%B4%D1%8B

В книге η:I→T и μ:TT→T, но разве не должно быть η:I→TT и μ:TT→T?

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anton-k commented May 4, 2019

Тут правильно, первое преобразование заворачивает обычное значение в T, а второе позволяет "упростить" контекст сделать из дважды T ординарное

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