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Haskell revision question. [closed]
Closed as unclear by Alexei on Nov 28, 2022 at 06:24
This question cannot be answered in its current form, because critical information is missing.
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The answer for this question is that there is something wrong with the expression of the first guard of this function below:
congratulations :: [(String, Int)] -> [String]
congratulations [] = []
congratulations ((name,mark):rest)
| mark > 40 = name
| otherwise = congratulations rest
What should be the correct expression for the first guard of the function and why?
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