|11 days ago||10 months ago|
|MIT License||BSD 3-clause "New" or "Revised" License|
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Was simplified subsumption worth it for industry Haskell programmers?
6 projects | reddit.com/r/haskell | 6 May 2022
I don't think there's any malicious intent. It seems pretty clear that the motivation here is to simplify the type checker considerably, which is a really good reason to do something. Heck, I've got an open issue for deleting a feature in persistent which (according to the lack of comments on the issue) only ever used by persistent's own test suite.
[ANNOUNCE] GHC 9.2.2 is now available!
4 projects | reddit.com/r/haskell | 7 Mar 2022
PR submitted: https://github.com/yesodweb/persistent/pull/1366 :)
Simple Servant + Persistent + Katip template for starting a new project
5 projects | reddit.com/r/haskell | 19 Jan 2022
Async Control Flow
Ha, I spotted a possible resource leak here. If stmtFinalize fail, then the connection won't be closed.
Hmm, you are right, the bracket I pointed to is unrelated. I guess the fix is in catchAny, which doesn't catch ThreadKilled. So not it's not rolling the transaction back in case of asynchronous exceptions. My point is that it probably should not rollback even on synchronous exception. BTW the issue is well know, see for example here
I don't think connection is returned to the pool here. The thread is interrupted when query is sent to server, but before the results are consumed. At that point cleanup action catches `ThreadKilled` exceptions and issues `ROLLBACK`, which fails with `libpg` exception because the previous operations was not completed. And now cleanup action rethrows the `libpg` exception instead of the `ThreadKilled` one - that's the behavior of `bracket` from `base`. [The fix](https://github.com/yesodweb/persistent/pull/1207/files#diff-f9d7f232cd00cb88188b7fcc68110e3f4cb378fcad9df652360de44d13cd86e3R199) was to use `bracket` from `unliftio`, which [rethrows the correct exception](https://hackage.haskell.org/package/unliftio-0.2.14/docs/src/UnliftIO.Exception.html#bracket).
We haven't tracked posts mentioning HDBC yet.
Tracking mentions began in Dec 2020.
What are some alternatives?
hocilib - A lightweight Haskell binding to the OCILIB C API
persistent-odbc - uses persistent connecting via hdbc odbc
persistent-relational-record - Persistent adapter for Haskell Relational Record
HongoDB - A Simple Key Value Store
bloodhound - Haskell Elasticsearch client and query DSL
mongoDB - MongoDB driver for Haskell
lmdb - Lightning MDB bindings for Haskell
presto-hdbc - Presto HDBC Connector
beam - A type-safe, non-TH Haskell SQL library and ORM