arrow-core / arrow.core.extensions.const.functor / arrow.Kind / mapConst

mapConst

@JvmName("mapConst") fun <A, B> Kind<Kind<ForConst, A>, A>.~~mapConst~~(arg1: B): Const<A, B> Deprecated: @extension kinded projected functions are deprecated

Replaces A inside F with B resulting in a Kind<F, B>

Kind<F, A> -> Kind<F, B>

 import arrow.core.*
import arrow.core.extensions.const.functor.*
import arrow.core.*


 import arrow.core.extensions.const.applicative.just
import arrow.core.extensions.monoid

 fun main(args: Array<String>) {
  val result =
  //sampleStart
  "Hello World".just<String>(String.monoid()).mapConst<String, String>("...")
  //sampleEnd
  println(result)
 }