add map to NonEmptyChain. (#2939)

* add map to NonEmptyChain. * Re-merge the `map` method is provided by the `Functor` instance of `Chain`
typelevel · Jul 22, 2019 · c313eb0 · c313eb0
1 parent 7e94169
commit c313eb0
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/core/src/main/scala/cats/data/NonEmptyChain.scala b/core/src/main/scala/cats/data/NonEmptyChain.scala
@@ -362,6 +362,12 @@ class NonEmptyChainOps[A](private val value: NonEmptyChain[A]) extends AnyVal {
   final def reduce[AA >: A](implicit S: Semigroup[AA]): AA =
     S.combineAllOption(iterator).get
 
+  /**
+   * Applies the supplied function to each element and returns a new NonEmptyChain.
+   */
+  final def map[B](f: A => B): NonEmptyChain[B] =
+    create(toChain.map(f))
+
   /**
    * Applies the supplied function to each element and returns a new NonEmptyChain from the concatenated results
    */