(yegor256#1572) Generify more classes from func package

DmitryBarskov · DmitryBarskov · commit 0f67ca8a1bfa · 2021-05-08T11:55:29.000+03:00
diff --git a/src/main/java/org/cactoos/func/Flattened.java b/src/main/java/org/cactoos/func/Flattened.java
@@ -25,6 +25,7 @@
 
 import org.cactoos.Func;
 import org.cactoos.Scalar;
+import org.cactoos.scalar.Constant;
 
 /**
  * {@link Func} from {@link Func} of {@link Scalar}.
@@ -40,7 +41,7 @@ public final class Flattened<X, Y> extends FuncEnvelope<X, Y> {
      * Ctor.
      * @param sclr The func
      */
-    public Flattened(final Func<X, Scalar<Y>> sclr) {
+    public Flattened(final Func<X, ? extends Scalar<? extends Y>> sclr) {
         super(x -> sclr.apply(x).value());
     }
 }

Original file line number	Diff line number	Diff line change
`@@ -25,6 +25,7 @@`
`25`	`25`
`26`	`26`	`import org.cactoos.Func;`
`27`	`27`	`import org.cactoos.Scalar;`
	`28`	`+import org.cactoos.scalar.Constant;`
`28`	`29`
`29`	`30`	`/**`
`30`	`31`	`* {@link Func} from {@link Func} of {@link Scalar}.`
`@@ -40,7 +41,7 @@ public final class Flattened<X, Y> extends FuncEnvelope<X, Y> {`
`40`	`41`	`* Ctor.`
`41`	`42`	`* @param sclr The func`
`42`	`43`	`*/`
`43`		`- public Flattened(final Func<X, Scalar<Y>> sclr) {`
	`44`	`+ public Flattened(final Func<X, ? extends Scalar<? extends Y>> sclr) {`
`44`	`45`	`super(x -> sclr.apply(x).value());`
`45`	`46`	`}`
`46`	`47`	`}`