Square brackets [] are pattern match syntax for lists. This will only work
for lists of length 1, anything else will be an error. Get rid of the
brackets on both sides of the equation and it will do what you expect.
Typically list variables are given plural names, such as xs instead of x.
On Wed, Jun 10, 2020 at 11:42 Alexander Chen
hi,
assigment: make your own element function with the any function.
--elem with any myElemAny :: Eq a => a -> [a] -> Bool myElemAny a = any (== a)
--elem with any myElemAny' :: Eq a => a -> [a] -> Bool myElemAny' a [x]= any (== a) [x]
myElemAny' compiles but throws an error because it has a non-exhaustive pattern. Could somebody tell me why the list gives the function grieveness?
thanks,
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