Created
March 3, 2012 06:55
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type definition by 'data' and 'newtype'
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| data Hoge = Hoge { get :: Int } | |
| foo :: Hoge -> String | |
| foo (Hoge _) = "foo!" | |
| foo undefined | |
| -- "*** Exception: Prelude.undefined |
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| newtype Hoge = Hoge { get :: Int } | |
| foo :: Hoge -> String | |
| foo (Hoge _) = "foo!" | |
| foo undefined | |
| -- "foo!" |
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