I only know F#. I haven\'t learned the other functional programming languages. All the examples that I have seen for monads only describe the bind and unit methods. F# has lots of keywords (e.g. let!,
I can\'t seem to figure out a workaround for this issue i\'m having. I have something like this: getFilePathForDay :: Day -> IO (Maybe FilePath)
I\'ve got a bunch of stateful functions inside a State monad. At one point in the program there needs to be some IO actions so I\'ve wrapped IO inside a StateT getting a pair of types like this:
I want to make in Haskell a mutable array based heap (the basic kind found everywhere else). There are some things I don\'t like about my initial approach, however:
I have the following c# code, it does a check on permissions. I\'m wondering if, when converted to f#, would computational expressions be a way to factor ou开发者_高级运维t the null checks.
I开发者_运维知识库 can define a natural transformation in Haskell as: h :: [a] -> Maybe a h []= Nothing
here is some food for thought. When I write monadic code, the monad imposes ordering on the operations done. For example, If I write in the IO monad:
Ok, guys, super easy question (it seems weird that Google didn\'t help me with this one): import IO --.... yadda, yadda, yadda
I was trying to implement the state monad in OCaml (as an exercise). My implementation looks like this:
How d开发者_Go百科o I write this function using the >>= operator? parseNumber2 :: Parser LispVal parseNumber2 = do x <- many1 digit
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