Use eagerMap instead of Lists.transform

1 files changed, 9 insertions, 0 deletions

diff --git a/src/main/java/org/zwobble/couscous/util/ExtraLists.java b/src/main/java/org/zwobble/couscous/util/ExtraLists.java
index 36c9b06..590b466 100644
--- a/src/main/java/org/zwobble/couscous/util/ExtraLists.java
+++ b/src/main/java/org/zwobble/couscous/util/ExtraLists.java
@@ -5,6 +5,7 @@ import java.util.function.BiFunction;
 import java.util.function.Function;
 import java.util.stream.Collectors;
 import java.util.stream.Stream;
+import java.util.stream.StreamSupport;
 
 public class ExtraLists {
     @SuppressWarnings("unchecked")
@@ -26,6 +27,14 @@ public class ExtraLists {
         }
     }
     
+    public static <T, R> List<R> eagerMap(
+            Iterable<T> iterable,
+            Function<T, R> function) {
+        return StreamSupport.stream(iterable.spliterator(), false)
+            .map(function)
+            .collect(Collectors.toList());
+    }
+    
     @FunctionalInterface
     public static interface CheckedFunction<T, R, E extends Exception> {
         R apply(T value) throws E;