Re: Extensible Exceptions and IO
On Sat, Apr 25, 2009 at 11:18:43AM -0700, Alexander Dunlap wrote: > In the extensible exceptions paper[1], which I believe is the guide > behind the current Control.Exception in GHC 6.10, a SomeIOException > type is discussed so that it would be possible to use the nice > interface for IOExceptions. Is this implemented anywhere? In the GHC > libraries, all I see is the old interface just plugged into a simple > wrapper, so you have to use guard . isDoesNotExistError (for example) > with catchJust to catch a certain type of exception. If not, are there > any plans to implement it? I'm not aware of anyone currently working on putting the various core libs' exceptions into a sensible hierarchy, but it would be great if someone was to do so! I'd suggest that the best way to do this would be initially a combination of discussions on the mailing list (if anything is non-obvious) and building a design (and, if appropriate, rationale) on a wiki page, and ending with a library submissions proposal once you have a design worked out: http://www.haskell.org/haskellwiki/Library_submissions Thanks Ian ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Re: Extensible Exceptions and IO
On Sat, Apr 25, 2009 at 11:18 AM, Alexander Dunlap wrote: > In the extensible exceptions paper[1], which I believe is the guide > behind the current Control.Exception in GHC 6.10, a SomeIOException > type is discussed so that it would be possible to use the nice > interface for IOExceptions. Is this implemented anywhere? In the GHC > libraries, all I see is the old interface just plugged into a simple > wrapper, so you have to use guard . isDoesNotExistError (for example) > with catchJust to catch a certain type of exception. If not, are there > any plans to implement it? > > Alex > Sorry...forgot to send the link. [1]http://www.haskell.org/~simonmar/papers/ext-exceptions.pdf Alex ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
Extensible Exceptions and IO
In the extensible exceptions paper[1], which I believe is the guide behind the current Control.Exception in GHC 6.10, a SomeIOException type is discussed so that it would be possible to use the nice interface for IOExceptions. Is this implemented anywhere? In the GHC libraries, all I see is the old interface just plugged into a simple wrapper, so you have to use guard . isDoesNotExistError (for example) with catchJust to catch a certain type of exception. If not, are there any plans to implement it? Alex ___ Glasgow-haskell-users mailing list Glasgow-haskell-users@haskell.org http://www.haskell.org/mailman/listinfo/glasgow-haskell-users
