|over 7 years ago
|23 days ago
|BSD 3-clause "New" or "Revised" License
|GNU General Public License v3.0 or later
Stars - the number of stars that a project has on GitHub. Growth - month over month growth in stars.
Activity is a relative number indicating how actively a project is being developed. Recent commits have higher weight than older ones.
For example, an activity of 9.0 indicates that a project is amongst the top 10% of the most actively developed projects that we are tracking.
Revisiting Haskell after 10 years
8 projects | dev.to | 15 Jan 2024
Writing Haskell programs that rely on third-party packages is still an issue when it’s a not actively maintained package. They get out of date with the base library (Haskell’s standard library), and you might see yourself in a situation where you need to downgrade to an older version. This is not exclusive to Haskell, but it happens more often than I’d like to assume. However, if you only rely on known well-maintained libraries/frameworks such as Aeson, Squeleto, Yesod, and Parsec, to name a few, it’s unlikely you will face troubles at all, you just need to be more mindful of what you add as a dependency. There’s stackage.org now, a repository that works with Stack, providing a set of packages that are proven to work well together and help us to have reproducible builds in a more manageable way—not the solution for all the cases but it’s good to have it as an option.
What databases do you find the most productive to connect to Haskell?
3 projects | /r/haskell | 29 Dec 2022
Postgresql-simple is a great library, it makes a nice use of overloaded strings to do the job. Some other nice libraries to keep an eye on are opaleye (postgres specific, which is equally nice but could be a bit difficult to get why the types are so big) and a combination of persistent (not DB specific! can work on postgres, sqlite, but also noSQL DBs like mongo, it's still easy to learn but you lose some things, such as joins due to the power of being agnostic) + esqueleto for type safe joins (be sure to look up the experimental package, it's a more comfortable syntax that will soon become the default one).
Go performance from version 1.2 to 1.18
14 projects | news.ycombinator.com | 3 Feb 2022
In Haskell: https://hackage.haskell.org/package/esqueleto
Either it analyzes the given SQL to determine the in/out types of each SQL query, or it calls the database describe feature at compile-time.
What's your favorite Database EDSL/library in Haskell?
4 projects | /r/haskell | 28 Feb 2023
If you ever have any questions about Opaleye I'm happy to help. Feel free to open an issue to ask about anything any time.
Persistent vs. beam for production database
2 projects | /r/haskell | 9 Feb 2023
Sounds like Opaleye isn't on your list of choices, but if it is then feel free to ask me any questions, any time by filing an issue (I'm the Opaleye maintainer).
What are things that the Haskell scene lacks the most?
4 projects | /r/haskell | 21 Apr 2022
Out of memory when building product-profunctors
2 projects | /r/haskell | 13 Mar 2022
Nice! Well done. If you have any more questions about product-profunctors or Opaleye then please let me know. It's best to ask by [opening an issue](https://github.com/tomjaguarpaw/haskell-opaleye/issues/new).
8 projects | news.ycombinator.com | 10 Jul 2021
The only way out that I can see is to design embedded domain specific languages (EDSLs) that inherit the expressiveness, composability and type safety from the host language. That's what Opaleye and Rel8 (Postgres EDSLs for Haskell do. Haskell is particularly good for this. The query language can be just a monad and therefore users can carry all of their knowledge of monadic programming to writing database queries.
This approach doesn't resolve all of the author's complaints but it does solve many.
Disclaimer: I'm the author of Opaleye. Rel8 is built on Opaleye. Other relational query EDSLs are available.
What are some alternatives?
HDBC - Haskell Database Connectivity
database-migrate - database-migrate haskell library to assist with migration for *-simple sql backends.
HongoDB - A Simple Key Value Store
yxdb-utils - Utilities for parsing Alteryx Database format
squeal-postgresql - Squeal, a deep embedding of SQL in Haskell
groundhog - This library maps datatypes to a relational model, in a way similar to what ORM libraries do in OOP. See the tutorial https://www.schoolofhaskell.com/user/lykahb/groundhog for introduction
hocilib - A lightweight Haskell binding to the OCILIB C API
beam - A type-safe, non-TH Haskell SQL library and ORM
mysql-simple - A mid-level client library for the MySQL database, intended to be fast and easy to use.
ampersand - Build database applications faster than anyone else, and keep your data pollution free as a bonus.
rel8 - Hey! Hey! Can u rel8?