Haskell: Is it possible to create a list of Show types? List[Show]? -

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is possible create list holds values belong show type ?

this similar list[showable] in scala, showable trait.

in way 1 put, example, int , string same list.

is possible? if yes, how ?

you can using existential types

data showbox = forall s. show s => sb s  heterolist :: [showbox] heterolist = [sb "hello world", sb 5, sb 1]

the thing can items in list show them:

let strings = fmap (\(sb b) -> show b) heterolist

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