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Tracking mentions began in Dec 2020.
Help me break the fourth wall
1 project | reddit.com/r/scala | 25 Apr 2022
Perhaps refined would help you? It lets you set constraints (i.e. "rules") for values / types. You get compile-time enforcement for constants and fallible methods for runtime values (i.e. Either[Error, RefinedValue]).
Simple, Naïve, and Wrong: More than you wanted to know about Scala Case Classes
3 projects | reddit.com/r/scala | 26 Feb 2022
This is more or less how derivation works when you want to use something like Refined types (it exposes Validate[Type, Refinement] typeclass if I remember correctly). Enumeratum exposes Enum[A], and newtypes expose Coercible[From, To].
Opinions on implementing traits for validation with the help of a companion object
2 projects | reddit.com/r/scala | 26 Feb 2022
You will probably be interested into Iron or Refined.
Help with Single Value Validated Types
2 projects | reddit.com/r/scala | 27 Aug 2021
You want either a refined type, a newtype, or if you are in Scala 3 an opaque type.
Alan Kay's answer to What was the last breakthrough in computer programming?
3 projects | news.ycombinator.com | 17 Aug 2021
Types versus sets in math and programming languages
1 project | reddit.com/r/ProgrammingLanguages | 24 Jul 2021
Option as type of field in case class
1 project | reddit.com/r/scala | 28 Apr 2021
Additionally, I also like to use Refined, so that my names are actually NonEmptyStrings, and I'll usually go even farther and make a LastName type alias to NonEmptyString and a FirstName type alias to NonEmptyString so that I can legitimately return just Char as an initial, for example. That way parsing guarantees you're not just sending me empty stuff that is just as useless as an empty person, and also so that I don't accidentally put a FirstName where a LastName should go somewhere in my code.
Using refined to improve type safety and error reporting in Scala
1 project | reddit.com/r/scala | 12 Apr 2021
I wrote a short piece on my company's blog explaining how we used refined to validate incoming data and parse it into more… well, refined types: https://engineering.contentsquare.com/2021/scala-refined-types/
Why there is still no ExpressJS-like alternative in Scala?
5 projects | reddit.com/r/scala | 7 Jan 2021
This example uses probably the most popular JSON library for Scala, Circe. There is another Scala library that lets us "be more specific with," or "refine," our types, called Refined. http4s doesn't provide any particular support for Refined, but Circe has a module integrating Refined, meaning that all of Circe's parsing, encoding, and decoding support is integrated with Refined. Putting together http4s' Circe support, Circe's generic codec derivation, and Circe's Refined integration, here's what I came up with:
What are some alternatives?
Shapeless - Generic programming for Scala
Scalaz - Principled Functional Programming in Scala
Log4s - High-performance SLF4J wrapper for Scala.
cats - Lightweight, modular, and extensible library for functional programming.
Scala Async - An asynchronous programming facility for Scala
Ammonite-Ops - Scala Scripting
Scala-Logging - Convenient and performant logging library for Scala wrapping SLF4J.
Monocle - Optics library for Scala
Each - A macro library that converts native imperative syntax to scalaz's monadic expressions
Cassovary - Cassovary is a simple big graph processing library for the JVM