Re: [Haskell-cafe] Opening the same file multiple times
Quoth Einar Karttunen
Quoth Einar Karttunen
On Mon, 2005-12-12 at 09:52 -0800, Donn Cave wrote:
Of course there's a risk that the authors of ghc may notice that we're doing this and come up with a way to thwart it, but it seems to me that between interfering with legitimate applications and not working reliably anyway, there'd be a case for letting go of this notion altogether.
Except that it is specified to work this way in the Haskell Report. Instead of changing the semantics of the standard libraries what you want is a back door to allow the alternative semantics that you want. Even better would be to provide a supported api for opening files without locking. Duncan
On Mon, 12 Dec 2005, Duncan Coutts wrote:
On Mon, 2005-12-12 at 09:52 -0800, Donn Cave wrote:
Of course there's a risk that the authors of ghc may notice that we're doing this and come up with a way to thwart it, but it seems to me that between interfering with legitimate applications and not working reliably anyway, there'd be a case for letting go of this notion altogether.
Except that it is specified to work this way in the Haskell Report.
Instead of changing the semantics of the standard libraries what you want is a back door to allow the alternative semantics that you want. Even better would be to provide a supported api for opening files without locking.
Actually I think I would prefer that the semantics change. A work-around would be good, and its existence would help publicize the problem with openFile, but changing openFile would be better for everyone, I suspect. (Apparently it may have been so specified in Haskell 98, up to April 2001?) Donn Cave, donn@drizzle.com
participants (2)
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Donn Cave -
Duncan Coutts