Squants
FS2
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Squants | FS2 | |
---|---|---|
8 | 17 | |
910 | 2,325 | |
0.1% | 1.1% | |
2.9 | 9.5 | |
8 days ago | 5 days ago | |
Scala | Scala | |
Apache License 2.0 | 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.
Squants
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Improving our safety with a physical quantities and units library
Scala's squants library is a nice implementation of units-of-measure/dimensional-analysis http://www.squants.com
In particular it uses types for dimensions; whilst units are just constructors. Hence `Meters(2)` and `Microns(7)` have the same type (`Length`).
- Show HN: Numbat – A programming language with physical dimensions as types
- The type system is a programmer's best friend
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Is Scala a good choice for a data intensive web backend?
squants for the “Market” package to use in financial calculations.
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Please put units in names
take a peek at https://www.squants.com looks like not in your language, but maybe you can apply some same concepts
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Atlas, a (hopefully) better engineering IDE
You might find the Squants library for Scala interesting; it even seems like an apt usage of some oft-questioned language features.
https://github.com/typelevel/squants
- Ratio Templates?
FS2
- Ask HN: What are some of the most elegant codebases in your favorite language?
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The Great Concurrency Smackdown: ZIO versus JDK by John A. De Goes
Recently, CE3 has had similar issues reported across multiple repositories, almost an epidemic of reports!
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Parallel streaming in Haskell: Part 1 – Fast, efficient, and fun
Thanks for the explanation!
So it's pull based and not push based like most other streams lib.
Does maybe someone know how this compares to FS2 or Iteratees than? (Both are also pull based streaming solutions).
https://fs2.io/#/
https://en.wikipedia.org/wiki/Iteratee
Looks quite similar to me. Is the Scala FS2 lib maybe even a clones of the Haskell solution? Or are they different in important aspects?
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Grasping the concepts and getting them down to earth
Most important/known: * https://http4s.org/ - an HTTP client/server * https://github.com/typelevel/fs2 - streaming * https://github.com/tpolecat/doobie - JDBC
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Should I Move From PHP to Node/Express?
On the contrary, switching to the functional mindset, with something like Typelevel Scala3 and respective cats and cats-effect fs2 frameworks, helps to rethink a lot of designs and development approaches.
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Is Scala a good choice for a data intensive web backend?
fs2 for streaming.
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Is “Functional Programming in Scala” 1st edition still relevant?
Finally, the last chapter has been rewritten to be based on some of the main design ideas from FS2 (https://fs2.io), which I hope will be more approachable than the 1st edition.
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FS2 stream doesn't work as I expect it to
Just to clarify, is your doubt about the meaning of the api, or do you think you have found a bug? In either case, you can also open a Github discussion https://github.com/typelevel/fs2/discussions.
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How to update and access state that needs to be shared across multiple API endpoints with FP?
Another more reactive solution would to use signals, as in FPR sinal network. fs2 implements this very nicely here https://github.com/typelevel/fs2/blob/8b285a6b54c63d43ed6aa3bb91365652035c90e5/core/shared/src/main/scala/fs2/concurrent/Signal.scala
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Introducing effects systems S.A. ZIO at work?
Assuming the bug mentioned here is https://github.com/typelevel/fs2/issues/2568, we came up with a partial fix in a day (https://github.com/typelevel/fs2/pull/2569) and a complete fix in 2 days: https://github.com/typelevel/fs2/pull/2572. Note the original bug was opened on a Saturday. :)
What are some alternatives?
Breeze - Breeze is a numerical processing library for Scala.
cats-effect - The pure asynchronous runtime for Scala
Axle - Axle Domain Specific Language for Scientific Cloud Computing and Visualization
Diffy
PredictionIO - PredictionIO, a machine learning server for developers and ML engineers.
Http4s - A minimal, idiomatic Scala interface for HTTP
Spire - Powerful new number types and numeric abstractions for Scala.
ScalaMock - Native Scala mocking framework
rscala - The Scala interpreter is embedded in R and callbacks to R from the embedded interpreter are supported. Conversely, the R interpreter is embedded in Scala.
ScalaTest - A testing tool for Scala and Java developers
Compute.scala - Scientific computing with N-dimensional arrays
ScalaMeter - Microbenchmarking and performance regression testing framework for the JVM platform.