Re: [Template-haskell] declaration splicing

13 Mar 2005

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From http://www.haskell.org/ghc/docs/6.4/html/users_guide/template-haskell.html:
'Note that the syntax for a declaration splice uses "$" not "splice"
as in the paper. Also the type of the enclosed expression must be Q
[Dec], not [Q Dec]  as in the paper.'
Thank you for your reply. I also tried to use "$". But GHC gives

*Main> $(myparseDec "x=1")

<interactive>:1:
    Couldn't match `Exp' against `Dec'
        Expected type: ExpQ
        Inferred type: Q Dec
    In the application `myparseDec "x=1"'
    In the definition of `it': it = $[splice](myparseDec "x=1")

It seems "$" only takes in an "Q Exp".

 -W-M-
  @ @
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  \_/

On Sun, 13 Mar 2005, Lemmih wrote:
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On Sun, 13 Mar 2005 23:31:28 +0800 (GMT-8), WANG Meng
 wrote:
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Hi All,
I am trying to use template haskell to splice top level declarations.
However, GHC complains
"<interactive>:1: Variable not in scope: `splice'"
--
Friendly,
  Lemmih