[Haskell-cafe] Re: [Haskell] Top Level <-
ganesh at earth.li
Sun Aug 31 10:44:06 EDT 2008
On Sun, 31 Aug 2008, Brandon S. Allbery KF8NH wrote:
> On 2008 Aug 31, at 10:34, Ganesh Sittampalam wrote:
>> I don't follow what you mean. stdin, stdout and stderr are just file
>> descriptors 0, 1 and 2, aren't they? You can create them as many times as
>> you want with using that information without causing any confusion or
>> conflict. Whereas the <- proposal has a "once-only" requirement.
> The convention is to provide buffered versions to improve the performance of
> file I/O. These buffered filehandles must be created once per runtime
> instance (and ideally once per process so multiple runtimes don't find
> themselves overwriting each others' output).
In that case it seems that any library that might be used from a runtime
that isn't the top-level of a process should avoid doing IO to those
handles, for fear of producing output corruption?
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