I think that Conal Elliot's Semantic Editor Combinators do the thing even better: http://conal.net/blog/posts/semantic-editor-combinators/
2008/12/23 Brent Yorgey <byor...@seas.upenn.edu>: >> >> Is there a standard update function for fields in data types, something >> that OO programmers do with assignments like obj.attr := value ? > > Oh, I missed this question the first time. You probably want > Functional References: > > http://twan.home.fmf.nl/blog/haskell/overloading-functional-references.details > > -Brent > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe > -- Евгений Кирпичев Разработчик Яндекс.Маркета
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