John Goerzen wrote:
Hello,
I have been writing code using the docs over at http://www.haskell.org/ghc/docs/latest/html/libraries/index.html, which is the only comprehensive library reference I could find.
I am using some code from System.IO, supposedly from base. When I try to build this with nhc98, it doesn't know about hGetBuf, hPutBuf, or openBinaryFile from there or about mallocForeignPtrArray from the Foreign.* area. But all these look standard to me.
They aren't; they are GHC extensions, except for mallocForeignPtrArray, which is specified by the FFI addendum: http://www.cse.unsw.edu.au/~chak/haskell/ffi/
What am I missing here? Does nhc98 really completely lack the ability to read binary data from a file?
I can't comment on nhc98, but the Haskell98 standard doesn't include any mechanism for binary I/O.
Or where should I be finding it, and how could I have known for myself that those particular ghc functions were unsupported elsewhere?
The Haskell98 report can be found at:
http://www.haskell.org/onlinereport/
Anything which isn't listed there is essentially a vendor extension.
--
Glynn Clements