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function signature haskell

Renz Carillo answered on May 22, 2022 Popularity 8/10 Helpfulness 6/10

answer function signature haskell

function signature haskell

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-- three degrees of polymoprhism in type signature 
foo ::           a    -- any / all types, i.e. parametrically polymorphic | typically used when argument is any type/typeclass
bar :: Show a => a    -- some types, i.e. ad-hoc polymorphic | typically used when argument is typeclass
qux ::           Bool -- one type, i.e. monomorphic | typicaly used when argument is primitive type

Popularity 8/10 Helpfulness 6/10 Language haskell

Source: Grepper

Tags: function-signature haskell type-signature

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