final class ListOps[A] extends AnyVal
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Instance Constructors
- new ListOps(la: List[A])
Value Members
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final
def
!=(arg0: Any): Boolean
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final
def
##(): Int
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final
def
==(arg0: Any): Boolean
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final
def
asInstanceOf[T0]: T0
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def
getClass(): Class[_ <: AnyVal]
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def
groupByNel[B](f: (A) ⇒ B)(implicit B: Order[B]): SortedMap[B, NonEmptyList[A]]
Groups elements inside this
Listaccording to theOrderof the keys produced by the given mapping function.Groups elements inside this
Listaccording to theOrderof the keys produced by the given mapping function.scala> import cats.data.NonEmptyList scala> import scala.collection.immutable.SortedMap scala> import cats.implicits._ scala> val list = List(12, -2, 3, -5) scala> list.groupByNel(_ >= 0) res0: SortedMap[Boolean, NonEmptyList[Int]] = Map(false -> NonEmptyList(-2, -5), true -> NonEmptyList(12, 3))
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final
def
isInstanceOf[T0]: Boolean
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def
toNel: Option[NonEmptyList[A]]
Returns an Option of NonEmptyList from a List
Returns an Option of NonEmptyList from a List
Example:
scala> import cats.data.NonEmptyList scala> import cats.implicits._ scala> val result1: List[Int] = List(1, 2) scala> result1.toNel res0: Option[NonEmptyList[Int]] = Some(NonEmptyList(1, 2)) scala> val result2: List[Int] = List.empty[Int] scala> result2.toNel res1: Option[NonEmptyList[Int]] = None
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def
toString(): String
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