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haskellhaskell-lenslenses

Haskell - iso on newtype

If I have a newtype

newtype Foo = Foo Int

is there an automatic way to get an Iso' Foo Int?

I saw I could use makeLenses ''Foo, but I don't know what is the name of the generated iso.

Solution

  • coerced :: (Coercible s a, Coercible t b) => Iso s t a b