#6038: Allow view patterns inside record patterns
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Reporter: akio | Owner:
Type: feature request | Status: new
Priority: normal | Component: Compiler
Version: 7.4.1 | Keywords:
Os: Unknown/Multiple | Architecture: Unknown/Multiple
Failure: None/Unknown | Testcase:
Blockedby: | Blocking:
Related: |
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I think it would be nice if I could directly write a view pattern inside a
record pattern. Currently the following program causes a parse error.
{{{
{-# LANGUAGE ViewPatterns #-}
newtype Foo = Foo{ fooA :: Int }
main = case Foo 4 of
Foo{ fooA = show -> s } -> print s
--Foo{ fooA = (show -> s) } -> print s -- This version is ok.
}}}
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Ticket URL: <http://hackage.haskell.org/trac/ghc/ticket/6038>
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