Add object-oriented map(func) method.

Author: javadev

src/main/java/com/github/underscore/$.java

@@ -213,6 +213,10 @@ public static <T, E> List<T> map(final List<E> list, final Function1<? super E,
         return transformed;
     }
 
+    public <F> List<F> map(final Function1<? super T, F> func) {
+        return map(newArrayList(iterable), func);
+    }
+
     public static <T> List<T> map(final int[] array, final Function1<? super Integer, T> func) {
         final List<T> transformed = newArrayListWithExpectedSize(array.length);
         for (int element : array) {

src/test/java/com/github/underscore/CollectionsTest.java

@@ -182,6 +182,12 @@ public Integer apply(Integer item) {
             }
         });
         assertEquals("[3, 6, 9]", result.toString());
+        List<Integer> resultObject = new $<Integer>(asList(1, 2, 3)).map(new Function1<Integer, Integer>() {
+            public Integer apply(Integer item) {
+                return item * 3;
+            }
+        });
+        assertEquals("[3, 6, 9]", resultObject.toString());
     }
 
 /*