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There are helpful tutorials for all of the things you've mentioned. I think that part of the problem is that people don't go looking for these things. If you wa

There are helpful tutorials for all of the things you've mentioned. I think that part of the problem is that people don't go looking for these things. If you want to write a backend for a web-app, there are three frameworks that are all mature: Snap, Yesod, and Happstack. There are tutorials, books, and documentation for all of these frameworks. If you want to do 3D graphics, there are some pretty straightforward bindings to OpenGL, again with tutorials and documentation. If you want to talk to a USB peripheral, there's the usb-safe. For databases, there are a myriad of options and tutorials for those. The tutorials are all out there, but one is going to have to have a pretty solid grasp on Haskell before one can understand them, just like with any other language.

virtualwhys 12y ago
> For databases, there are a myriad of options and tutorials for those Where? The only half appealing type safe query DSL that I've found for Haskell is Esqueleto, and that features a blank github readme[1] o_O [1] https://github.com/meteficha/esqueleto https://github.com/meteficha/esqueleto
- wraithm112 12y ago
  Groundhog is pretty awesome[1]. Persistent also works, but it does some wonky stuff on SQL databases. Acid-state is really neat! Of course, there's stuff like postgresql-simple, but that's not very type safe. [1]https://www.fpcomplete.com/school/to-infinity-and-beyond/pick-of-the-week/groundhog https://www.fpcomplete.com/school/to-infinity-and-beyond/pic... Edit: Also, esqueleto has a pretty okay looking hackage page[2], but I've never used esqueleto, so I don't really know. [2]http://hackage.haskell.org/package/esqueleto http://hackage.haskell.org/package/esqueleto
  - carabolic 12y ago
    Do you have any experience with Database Supported Haskell (DSH) [1]? I've just recently found it and it seems very nice. I didn't have the time to test it though. [1] https://hackage.haskell.org/package/DSH https://hackage.haskell.org/package/DSH
    - wraithm112 12y ago
      No, I don't. That seems really cool though! Thanks for pointing that out.
  - virtualwhys 12y ago
    Did not know about Groundhog, thanks. Looking into the docs Groundhog does not support joins (same deal with Persistent), which I'd say is a deal breaker for most (non-trivial) applications. Acid-state is a different beast entirely, seems to be similar to Clojure's Datomic. That leaves us with Esqueleto for real world type safe database access (with no SQL Server or Oracle support). I want to jump ship from Scala to Haskell but there are some gaps to be filled yet before leaving the batteries included Java ecosystem.
    - cgag 12y ago
      Does esqueleto not do it for you? Can you be explitit about whats missing for you? Is it just oracle or sql server support?

virtualwhys 12y ago

> For databases, there are a myriad of options and tutorials for those Where? The only half appealing type safe query DSL that I've found for Haskell is Esqueleto, and that features a blank github readme[1] o_O [1] https://github.com/meteficha/esqueleto https://github.com/meteficha/esqueleto

wraithm112 12y ago
Groundhog is pretty awesome[1]. Persistent also works, but it does some wonky stuff on SQL databases. Acid-state is really neat! Of course, there's stuff like postgresql-simple, but that's not very type safe. [1]https://www.fpcomplete.com/school/to-infinity-and-beyond/pick-of-the-week/groundhog https://www.fpcomplete.com/school/to-infinity-and-beyond/pic... Edit: Also, esqueleto has a pretty okay looking hackage page[2], but I've never used esqueleto, so I don't really know. [2]http://hackage.haskell.org/package/esqueleto http://hackage.haskell.org/package/esqueleto
- carabolic 12y ago
  Do you have any experience with Database Supported Haskell (DSH) [1]? I've just recently found it and it seems very nice. I didn't have the time to test it though. [1] https://hackage.haskell.org/package/DSH https://hackage.haskell.org/package/DSH
  - wraithm112 12y ago
    No, I don't. That seems really cool though! Thanks for pointing that out.
- virtualwhys 12y ago
  Did not know about Groundhog, thanks. Looking into the docs Groundhog does not support joins (same deal with Persistent), which I'd say is a deal breaker for most (non-trivial) applications. Acid-state is a different beast entirely, seems to be similar to Clojure's Datomic. That leaves us with Esqueleto for real world type safe database access (with no SQL Server or Oracle support). I want to jump ship from Scala to Haskell but there are some gaps to be filled yet before leaving the batteries included Java ecosystem.
  - cgag 12y ago
    Does esqueleto not do it for you? Can you be explitit about whats missing for you? Is it just oracle or sql server support?