add pipe#map(class)

burdoto · burdoto · commit 9584387fba49 · 2020-09-15T15:08:51.000+02:00
diff --git a/src/mutatio/main/java/org/comroid/mutatio/pipe/Pipe.java b/src/mutatio/main/java/org/comroid/mutatio/pipe/Pipe.java
@@ -107,6 +107,10 @@ default Pipe<O> filter(Predicate<? super O> predicate) {
         return addStage(StageAdapter.filter(predicate));
     }
 
+    default <R> Pipe<R> map(Class<R> target) {
+        return filter(target::isInstance).map(target::cast);
+    }
+
     default <R> Pipe<R> map(Function<? super O, ? extends R> mapper) {
         return addStage(StageAdapter.map(mapper));
     }

Original file line number	Diff line number	Diff line change
`@@ -107,6 +107,10 @@ default Pipe<O> filter(Predicate<? super O> predicate) {`
`107`	`107`	`return addStage(StageAdapter.filter(predicate));`
`108`	`108`	`}`
`109`	`109`
	`110`	`+ default <R> Pipe<R> map(Class<R> target) {`
	`111`	`+ return filter(target::isInstance).map(target::cast);`
	`112`	`+ }`
	`113`	`+`
`110`	`114`	`default <R> Pipe<R> map(Function<? super O, ? extends R> mapper) {`
`111`	`115`	`return addStage(StageAdapter.map(mapper));`
`112`	`116`	`}`