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Chapter 11.4 The State Monad - type mismatch in example #132

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crcdng opened this issue Apr 2, 2018 · 0 comments
Open

Chapter 11.4 The State Monad - type mismatch in example #132

crcdng opened this issue Apr 2, 2018 · 0 comments

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@crcdng
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crcdng commented Apr 2, 2018 

> :paste
… execState (do
…   sumArray [1, 2, 3]
…   sumArray [4, 5]
…   sumArray [6]) 0
… ^D
21

sumArray takes Array Number, the array values here are of type Int
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