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Questions - monad-transformers

Binding a Maybe within another monad to avoid case stairway of doom?

I'm fetching a user from a database with a key I'm fetching from an api (uid). The uid is a Maybe ByteString, and so I can either case check whether it's a Maybe and then run the Redis monad, or someh...
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staletidings

haskell

monads

monad-transformers

Votes: 0

Answers: 0

Couldn't match LoggingT with NoLoggingT

I have a following monad transformer stack including the monad-logger transformer and I want to be able to turn off logging by a parameter. I can see, there is the NoLoggingT type but I don't know how...
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xbalaj

haskell

logging

monad-transformers

Votes: 0

Answers: 1

Latest Answer

Your MyApp type is too concrete: it always includes LoggingT, so it always runs with logging enabled. You could give it a type parameter, and instantiate that type parameter either with LoggingT or No...
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amalloy

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