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Add generic deriving #40

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Add generic deriving #40

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1 change: 1 addition & 0 deletions bower.json
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Expand Up @@ -24,6 +24,7 @@
],
"dependencies": {
"purescript-foldable-traversable": "^0.4.0",
"purescript-generics": "^0.4.0",
"purescript-lazy": "^0.4.0",
"purescript-unfoldable": "^0.4.0"
},
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3 changes: 3 additions & 0 deletions src/Data/List.purs
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Expand Up @@ -85,6 +85,7 @@ module Data.List

import Prelude

import Data.Generic
import Data.Maybe
import Data.Tuple (Tuple(..))
import Data.Monoid
Expand Down Expand Up @@ -680,6 +681,8 @@ foldM f a (Cons b bs) = f a b >>= \a' -> foldM f a' bs
-- Instances -------------------------------------------------------------------
--------------------------------------------------------------------------------

derive instance genericList :: (Generic a) => Generic (List a)

instance showList :: (Show a) => Show (List a) where
show Nil = "Nil"
show (Cons x xs) = "Cons (" ++ show x ++ ") (" ++ show xs ++ ")"
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