Add support for the method size(Object ...).

Author: javadev

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

@@ -619,6 +619,9 @@ public <K, V> Map<K, V> toMap() {
     }
 
     public static int size(final Iterable<?> iterable) {
+        if (iterable instanceof Collection) {
+            return ((Collection) iterable).size();
+        }
         int size;
         final Iterator<?> iterator = iterable.iterator();
         for (size = 0; iterator.hasNext(); size += 1) {
@@ -631,6 +634,10 @@ public int size() {
         return size(iterable);
     }
 
+    public static <E> int size(final E ... array) {
+        return array.length;
+    }
+
     public static <E> List<List<E>> partition(final Iterable<E> iterable, final Predicate<E> pred) {
         final List<E> retVal1 = newArrayList();
         final List<E> retVal2 = newArrayList();

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

@@ -1144,6 +1144,25 @@ public void size() {
         assertEquals(4, resultObj);
         final int resultChain = $.chain(asList(1, 2, 3, 4)).size();
         assertEquals(4, resultChain);
+        final int[] array = new int[] {1, 2, 3, 4, 5, 6};
+        Iterable<Integer> iterable = new Iterable<Integer>() {
+            public Iterator<Integer> iterator() {
+                return new Iterator<Integer>() {
+                    private int index;
+                    public boolean hasNext() {
+                        return array.length > index;
+                    }
+                    public Integer next() {
+                        return array[index++];
+                    }
+                    public void remove() {
+                    }
+                };
+            }
+        };
+        assertEquals(6, $.size(iterable));
+        assertEquals(5, $.size(new Integer[] {5, 4, 3, 2, 1}));
+        assertEquals(5, $.size(5, 4, 3, 2, 1));
     }
 
 /*