System.Posix.IO.ByteString fdRead and fdWrite.

[Ashley Yakeley]

On 2013-11-21 02:55, Simon Marlow wrote:
>> However, I'm not totally sure from that, whether the type-sigs
>>
>>
>>   fdRead :: Fd
>>          -> ByteCount -- ^How many bytes to read
>>          -> IO (String, ByteCount) -- ^ The bytes read, how many bytes
>> were read.
>>
>>   fdWrite :: Fd -> String -> IO ByteCount
>>
>>
>> were really intended to be that way.
>>
>> Simon, maybe you can provide some insight here?
>
> Brandon's reply is correct, the ByteString variant of the POSIX API is
> intended to change the representation of file paths only.
>
> These two functions are totally useless and we need better versions anyway.

Regarding the path type issue, I wonder if it wouldn't be easier to 
settle on something like

   newtype PosixFilePath = PosixFilePath ByteString

   instance IsString PosixFilePath where ...

-- Ashley