[Haskell-cafe] Re: [Haskell] Re: ANNOUNCE: enumerator, an alternative iteratee package

Simon Marlow marlowsd at gmail.com
Mon Aug 23 07:29:44 EDT 2010


On 23/08/2010 12:10, Felipe Lessa wrote:
> Hello, Simon!
>
> On Mon, Aug 23, 2010 at 8:00 AM, Simon Marlow<marlowsd at gmail.com>  wrote:
>> The issue is that hGet always waits for a complete buffer-full of data
>> before returning.  The hWaitForInput/hGetNonBlocking combination fixes that
>> problem, but you have to be careful to make sure that the Handle is in
>> binary mode, otherwise hWaitForInput will not behave the way you expect (it
>> will decode the input byte stream, and wait for a full character).  For more
>> information, see
>>
>> http://hackage.haskell.org/trac/ghc/ticket/3808
>>
>> A better fix is to use hGetBufSome, but (a) it is only available in GHC 6.14
>> which isn't released yet, and (b) there isn't a bytestring wrapper for it
>> yet.
>
> So there really is a problem in the documentation of hGetBuf.  I
> assume it got fixed in HEAD together with hGetBufSome.

Which documentation are you referring to?  This looks ok to me:

http://www.haskell.org/ghc/docs/6.12.2/html/libraries/base-4.2.0.1/System-IO.html#v%3AhGetBuf

Cheers,
	Simon


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