Re: [Haskell-cafe] How come pattern match does not recognize this code style?

25 Oct 2009


      Am Montag 26 Oktober 2009 03:39:13 schrieb Magicloud Magiclouds:
...
Hi,
  In case of this:
case bala of
  [ bala
  , bala
  , bala ] -> bala bala bala
  _ -> bala
  ghc 6.10.4 would fail to compile, because of the wrong indent of
line ", bala".
Yes. It must, because the `of' opens a new layout block, so a line indented to the same 
level as the opening square bracket starts a new definition and it tries to parse it as

case bala of
    { [ bala;
      , bala;
      , bala ] -> bala bala bala;
      _ -> bala;
    }

What about

case bala of
    [ bala, bala, bala ]
        -> bala bala bala
    _ -> bala

?

Re: [Haskell-cafe] How come pattern match does not recognize this code style?

Daniel Fischer