interop-cats
ZIO instances for cats-effect type classes (by zio)
Simulacrum
First class syntax support for type classes in Scala (by typelevel)
Our great sponsors
interop-cats | Simulacrum | |
---|---|---|
5 | 1 | |
159 | 936 | |
1.9% | -0.4% | |
5.2 | 3.7 | |
11 days ago | about 1 month ago | |
Scala | Scala | |
Apache License 2.0 | BSD 3-clause "New" or "Revised" License |
The number of mentions indicates the total number of mentions that we've tracked plus the number of user suggested alternatives.
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.
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.
interop-cats
Posts with mentions or reviews of interop-cats.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-05-22.
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I have decided to connect my future with Scala (if possible), need little advice
If you're using http4s, don't use ZIO. Yes, ZIO has an interop-cats module, so you can do this. But using http4s means you're working in the conceptual framework the Typelevel ecosystem is based on (and what interop-cats does can be characterized as "describe ZIO's implementation in those terms, so the Typelevel ecosystem can make heads or tails of it.") This is essentially all cost and no benefit: you can't avoid understanding the Typelevel ecosystem if you use http4s (at least, no more than you can by using cats-effect), and you don't get any of the value proposition of ZIO (interop-cats gives you Typelevel typeclass instances for the RIO type alias, which means your error channel is rooted in Throwable, and you're faced with the most complex part of the ZIO ecosystem: ZLayer, which the Typelevel ecosystem doesn't use and doesn't need). Finally the ZIO ecosystem is still quite immature, and this brings us to documentation. There is not (yet!) anything comparable to:
- Using FS2 alongside ZIO?
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Friction-less scala - Tell us what is causing friction in your day-to-day life with Scala
These are necessarily oversimplifications. In particular, the ZIO ecosystem offers the relevant instances of cats-effect typeclasses to support use of the ZIO type in the cats-effect ecosystem.
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Why Typelevel hates ZIO?
However, ZIO continues to offer cats-effect type classes and I certainly have no doubt cats-effect 3 continues to benefit from John's contributions. Furthermore, I likewise don't doubt the value of the ZIO ecosystem generally, and John's success in building the ZIO community speaks for itself. I personally have chosen to remain closer to the other, let's say "classical," pure FP ecosystems, partially for historical (or, if you prefer, "sunk cost") reasons, but partially because I'm satisfied the value of the Haskell/Typelevel/PureScript/fp-ts/etc. interplay warrants it.
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Is it possible to use cats' monad transformers (OptionT, EitherT) with an effect type (F) that has >1 type parameter?
It seems that zio/interop-cats faces a similar issue.
Simulacrum
Posts with mentions or reviews of Simulacrum.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2021-08-10.
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Friction-less scala - Tell us what is causing friction in your day-to-day life with Scala
The Cats ecosystem offers mature named abstractions providing algebraic laws virtually identical to those offered by Haskell and PureScript and that have stood the test of time, at the cost of relying on a "design pattern" approach to implementation you have to squint a bit to see ("typeclasses" based on higher-kinded types and implicit arguments) and that sometimes doesn't play nicely with Scala's colored local type inference. The selling point of this, coupled with parametricity ("tagless-final style"), is the ability to reason algebraically about your code.
What are some alternatives?
When comparing interop-cats and Simulacrum you can also consider the following projects:
cats-effect - The pure asynchronous runtime for Scala
Ammonite-Ops - Scala Scripting
slick-cats - Cats instances for Slick DBIO
scribe - The fastest logging library in the world. Built from scratch in Scala and programmatically configurable.
fs2-grpc - gRPC implementation for FS2/cats-effect
Quicklens - Modify deeply nested case class fields
sbt-crossproject - Cross-platform compilation support for sbt.
Freestyle - A cohesive & pragmatic framework of FP centric Scala libraries
purescript - A strongly-typed language that compiles to JavaScript
LArray - Large off-heap arrays and mmap files for Scala and Java
mules-http4s - Http4s Caching Implementation
Shapeless - Generic programming for Scala
interop-cats vs cats-effect
Simulacrum vs Ammonite-Ops
interop-cats vs slick-cats
Simulacrum vs scribe
interop-cats vs fs2-grpc
Simulacrum vs Quicklens
interop-cats vs sbt-crossproject
Simulacrum vs Freestyle
interop-cats vs purescript
Simulacrum vs LArray
interop-cats vs mules-http4s
Simulacrum vs Shapeless