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Semigroup object additions #4625

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Semigroup object additions #4625

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e5cb750
Add `reverse` on the Semigroup companion object
igstan Jun 17, 2024
99714f1
Add `intercalate` on the Semigroup companion object
igstan Jun 17, 2024
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5 changes: 5 additions & 0 deletions kernel/src/main/scala/cats/kernel/Semigroup.scala
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Original file line number Diff line number Diff line change
Expand Up @@ -178,6 +178,11 @@ object Semigroup
*/
@inline def last[A]: Semigroup[A] = (_, y) => y

@inline def reverse[A](implicit ev: Semigroup[A]): Semigroup[A] = ev.reverse

@inline def intercalate[A](sep: A)(implicit ev: Semigroup[A]): Semigroup[A] =
ev.intercalate(sep)

implicit def catsKernelBoundedSemilatticeForBitSet: BoundedSemilattice[BitSet] =
cats.kernel.instances.bitSet.catsKernelStdSemilatticeForBitSet
implicit def catsKernelInstancesForUnit: BoundedSemilattice[Unit] with CommutativeGroup[Unit] =
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