Shapeless
Generic programming for Scala (by milessabin)
Scalaz
Principled Functional Programming in Scala (by scalaz)
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Shapeless | Scalaz | |
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13 | 3 | |
3,363 | 4,654 | |
- | 0.1% | |
7.5 | 8.4 | |
7 days ago | 7 days ago | |
Scala | Scala | |
Apache License 2.0 | GNU General Public License v3.0 or later |
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.
Shapeless
Posts with mentions or reviews of Shapeless.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-07-06.
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Question regarding Recursive datatypes and cats typeclasses (Haskell to Scala)
Scala 2-only: * Shapeless (there is Shapeless for Scala 3 but less often needed as basic things are in Scala 3)
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Is there the equivalent of this in Scala ? (Maps to Struct)
This is the FromMap typeclass in Shapeless. Note that there’s a companion syntax package for it providing .toRecord for any Map and an appropriately-structured Record (and a Record is the LabelledGeneric representation of a case class).
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Scala 3: modifying product types in compile-time
If that's what you want, you can use Shapeless' records and HList. You can probably replicate this in plain Scala 3 with tuples and literal types as you said. It won't play nice with your others libs though but maybe there are integrations.
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Does Scala have support for Dependent types?
See the Shapeless Sized example.
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How does Scala's type system compare to TypeScript's? Is it as powerful?
Shapeless has Sized: https://github.com/milessabin/shapeless/blob/v2.3.9/core/src/main/scala/shapeless/sized.scala
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Fp libraries that target scala 3 exclusively?
I know that libraries like Scodec and shapeless were rewritten practically from scratch for Scala 3, taking advantage of the next syntax and internals, as well as protoquill - a Scala 3 implementation of Quill.
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Delphi 11 Alexandria Has Been Released
please show me something like this: https://akka.io/ or this: https://zio.dev/ or this: https://github.com/milessabin/shapeless
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6 Years of Professional Clojure
That largely depends on the type system. Languages like Haskell and Scala which have much more powerful type systems than C/Java/Go/etc absolutely do allow you to do those sorts of things. It is a bit harder to wrap your head around to be sure and there are some rough edges, but once you get the hang of it you can get the benefits of static typing with the flexibility of dynamic typing. See https://github.com/milessabin/shapeless or a project that I've been working on a lot lately https://github.com/zio/zio-schema.
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Scala3: Does it provide a simplified way of doing n-term generic parameters?
Just use cats and use the apply syntax .mapN for this. Seriously. There isn't a way to do it without generating source code that I can see in the api. Scala 3's HList Tuples aren't like Shapeless 2's HLists and I can't figure out a way in the api to reduce the tuple members down from (A, B, C, D) into an E, generically, yet with Scala 3 poly functions, unlike what you could do in Shapeless 2 with HList
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Scala: A Love Story
Scala has sparked a huge ecosystem of very high quality libraries (Cats, Scalaz, shapeless, to name but a few). I think a major reason for this is that Scala attracts developers who value the advantages of the JVM, but are fed up with the limitations of the Java programming language and understand the benefits of an expressive type system and functional programming.
Scalaz
Posts with mentions or reviews of Scalaz.
We have used some of these posts to build our list of alternatives
and similar projects. The last one was on 2023-05-29.
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Going into year 2 of Software Development Foundation Degree, have a particular liking for OOP and SQL, any tips, info or pointers on where to go from there?
I'm sorry, but have you ever done functional programming for a real company, like in a functional programming language like Haskell, Scala, or F#? Have you ever used Scala cats or scalaz? Have you ever learned category theory and how to apply its abstractions in software? Listen u/judethedude2106 this person hasn't gone as far down the functional programming rabbit hole as I have. Beyond learning the basics like the difference between pure and impure functions, what are closures, what higher order functions are and the most common ones like .map, .filter, and .flatmap, the immutable collections like immutable linked lists and trees, and what a Monad is and common monads like those used for futures/promises, async programming, and Option (Some or None, which is used instead of null checking), the more advanced functional programming stuff like category theory based abstractions are totally useless for real jobs and is just a giant time suck. Don't waste years on functional programming, spend at most a few months on it and no more.
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Typeclasses explained in Java
If I managed to gain you interest you can take a look at one of the following libraries like cats, scalaz for scala and vavr for java which contain type class definitions and implementations for common types.
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In Search of the Best Functional Programming Back-End: 2021 Update
I’ve specifically had 2 job offers internally at my company because of this language. First with Cats and Scalaz and now with ZIO, Scala has taken the best parts of Haskell, the best parts of Scala, and made it really nice to work with. You can barely see the OOP leftovers.
What are some alternatives?
When comparing Shapeless and Scalaz you can also consider the following projects:
cats - Lightweight, modular, and extensible library for functional programming.
magnolia - Easy, fast, transparent generic derivation of typeclass instances
Monocle - Optics library for Scala
ScalaTest - A testing tool for Scala and Java developers
Chimney - Scala library for boilerplate-free, type-safe data transformations
better-files - Simple, safe and intuitive Scala I/O
scala-newtype - NewTypes for Scala with no runtime overhead
scala.meta - Library to read, analyze, transform and generate Scala programs
Ammonite-Ops - Scala Scripting