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Today's Topics:

   1.  how to convert an array of foreignPtr a into a   list of Ptr a
      (PICCA Frederic-Emmanuel)


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Message: 1
Date: Tue, 27 Aug 2019 07:19:25 +0000
From: PICCA Frederic-Emmanuel
        <frederic-emmanuel.picca@synchrotron-soleil.fr>
To: "The Haskell-Beginners Mailing List - Discussion of primarily
        beginner-level topics related to Haskell" <beginners@haskell.org>
Subject: [Haskell-beginners] how to convert an array of foreignPtr a
        into a  list of Ptr a
Message-ID:
        <A2A20EC3B8560D408356CAC2FC148E53016CF535AB@SUN-DAG3.synchrotron-soleil.fr>

Content-Type: text/plain; charset="us-ascii"

Hello, I am writing some code whcih use FFI.

one of my C functions has an array of pointer has imput

extern HklBinocularsCube *hkl_binoculars_cube_new(int32_t n_spaces,
                                                                           const HklBinocularsSpace **spaces);


from Haskell, I have a list of ForeignPtr
so my question how can I have something like withForeignPtr for an array of ForeignPtr

[ForeignPtr a] -> ([Ptr a] -> IO b) -> IO b

Thanks for your help.

Frederic

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