cats-kernel-3

library2.13.0javamavenunverified

Core type classes and data structures for the Cats functional programming library, compiled for Scala 3.

<dependency>
  <groupId>org.typelevel</groupId>
  <artifactId>cats-kernel_3</artifactId>
  <version>2.13.0</version>
</dependency>

github ↗homepage ↗docs ↗

INSTALL

IMPORT

SIG · CATS-KERNEL-3

cats-kernel-3

utilityjavav2.13.0

harness data pending

Install & Compatibility

Where this runs

No compatibility data collected yet for this library.

Code

Verified usage

Verified import paths — ran on the pinned version, not inferred.

Semigroup

✓ cats.kernel.Semigroup

Define and use a Semigroup instance.

import cats.kernel.Semigroup object Example extends App { implicit val intSemigroup: Semigroup[Int] = Semigroup.instance(_ + _) println(intSemigroup.combine(1, 2)) }

Debug

Known issues

gotchaCats Kernel for Scala 3 may have subtle differences in type inference compared to Scala 2.

fix

Refer to the Cats migration guide for Scala 3.

affects: >=2.13.0

Upgrade

Version history

2.13.0latest on Maven

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Dependencies

No dependency data recorded yet.

Agent activity

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Resources

githubhttps://github.com/typelevel/cats ↗

homepagehttps://typelevel.org/cats ↗

docshttps://appdoc.app/artifact/org.typelevel/cats-kernel_3/ ↗