[Haskell-cafe] Re: Temlpate Haskell: [d| ... |]

17 Oct 2008


      Robert Greayer  wrote:
...
--- On Fri, 10/17/08, Achim Schneider  wrote:
...
...
...
declarations = [d|
   foo = "bar"
   bar = "foo"
|]
-fth doesn't make a difference here, I'm using
-XTemplateHaskell with
ghc 6.8.3
The following lines, verbatim, pasted into a file, work for me with
6.8.3 with no command line options:
{-# LANGUAGE TemplateHaskell #-}
module TH where
import Language.Haskell.TH
declarations = [d|
   foo = "bar"
   bar = "foo"
   |]
Argh. Yes. They do. While I certainly am in favour of layout rules, I'm
not in favour of one that gives raises an error if you don't indent the
closing |] by at least one whitespace.

declarations = 
[d| 
    foo = "bar"
    bar = "foo" 
|]

doesn't work, either, as 

declarations = 
    [d| foo = "bar"
        bar = "foo" 
    |]

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