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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)
----------------------------------------------------------------------
Message: 1
Date: Tue, 27 Aug 2019 07:19:25 +0000
From: PICCA Frederic-Emmanuel
<frederic-emmanuel.pi...@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:
<a2a20ec3b8560d408356cac2fc148e53016cf53...@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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