Re: [Haskell-cafe] Instances of `IsString`.
On Sun, Dec 20, 2009 at 11:09 PM, Jason Dusek jason.du...@gmail.com wrote: A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? I use it in my little dstring library: http://hackage.haskell.org/package/dstring-0.3.0.1 Bas ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Instances of `IsString`.
Hi Jason, I believe the original purpose of IsString was to enable writing of DSL's, much like described in this paper: http://portal.acm.org/citation.cfm?id=1411236 As such, you might find far more uses of IsString inside DSL's, some of which are likely to remain private. It was never designed to be a feature for every day use, but if you need it (as you do for Paradise) then it's hard to live without. Thanks, Neil On Sun, Dec 20, 2009 at 10:39 PM, Jason Dusek jason.du...@gmail.com wrote: 2009/12/20 Brandon S. Allbery KF8NH allb...@ece.cmu.edu: On Dec 20, 2009, at 17:09 , Jason Dusek wrote: A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? The only 2 instances I'm aware of are String and lazy and strict ByteStrings. It's not clear to me that there need to be any more (well, maybe the packed Unicode string package on hackage). It could be easily abused, that is for sure. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
[Haskell-cafe] Instances of `IsString`.
A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Instances of `IsString`.
On Dec 20, 2009, at 17:09 , Jason Dusek wrote: A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? The only 2 instances I'm aware of are String and lazy and strict ByteStrings. It's not clear to me that there need to be any more (well, maybe the packed Unicode string package on hackage). -- brandon s. allbery [solaris,freebsd,perl,pugs,haskell] allb...@kf8nh.com system administrator [openafs,heimdal,too many hats] allb...@ece.cmu.edu electrical and computer engineering, carnegie mellon universityKF8NH PGP.sig Description: This is a digitally signed message part ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Instances of `IsString`.
On Sun, Dec 20, 2009 at 4:12 PM, Brandon S. Allbery KF8NH allb...@ece.cmu.edu wrote: On Dec 20, 2009, at 17:09 , Jason Dusek wrote: A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? The only 2 instances I'm aware of are String and lazy and strict ByteStrings. It's not clear to me that there need to be any more (well, maybe the packed Unicode string package on hackage). There's also ShowS and Text.PrettyPrint.Doc which make useful instances. The ShowS instance is a bit dicey since ShowS is just a type synonym. I don't know of any released packages which include these, though. I don't know if it would increase clarity, but I could see a Parsec instance as well, where fromString = string :: String - Parser String. You could do the same for any of the parser combinator libraries I imagine. Antoine ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
Re: [Haskell-cafe] Instances of `IsString`.
2009/12/20 Brandon S. Allbery KF8NH allb...@ece.cmu.edu: On Dec 20, 2009, at 17:09 , Jason Dusek wrote: A quick check on Hayoo! and in my interpreter shows that there are basically no instances of `IsString`. Is it really so little used? The only 2 instances I'm aware of are String and lazy and strict ByteStrings. It's not clear to me that there need to be any more (well, maybe the packed Unicode string package on hackage). It could be easily abused, that is for sure. -- Jason Dusek ___ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe
