Dnia czwartek, 31 stycznia 2013, Ertugrul Söylemez napisał: > Remember that 'Either e' is also a monad. =) I remember - this makes the change from Maybe to Either very easy :) Still I found that adding error message to every combinator and function ads a lot of boilerplate. Also, I experince problem with granularity of the messages, e.g. a message like "digit expected" is too low-level not helpful without telling user that the problem was in the incorect date format.
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