September 2017
Beginner to intermediate
396 pages
9h 46m
English
Content preview from Haskell Cookbook
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Working with the Writer monad transformer
In the previous recipe, we worked with the Reader monad transformer. In this recipe, we will work with the Writer monad transformer. Like the Reader monad transformer, the Writer monad transformer is also a restricted version of a state transformer, in which we can only write (but cannot read).
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