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fix: remove bad hint in functions4
Technically it's correct, but playing around with this will very quickly throw you into having to handle `Option`s and futzing around with `try_into`. Not really something we want to throw upon the user here. Closes #1948.
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@ -142,10 +142,7 @@ mode = "compile"
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hint = """
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The error message points to the function `sale_price` and says it expects a type
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after the `->`. This is where the function's return type should be -- take a
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look at the `is_even` function for an example!
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Also: Did you figure out that, technically, `u32` would be the more fitting type
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for the inputs of the functions here, since the original prices shouldn't be negative? If so, kudos!"""
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look at the `is_even` function for an example!"""
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[[exercises]]
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name = "functions5"
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