Add support for the dropRightWhile().

Author: javadev

lodash-plugin/src/main/java/com/github/underscore/lodash/$.java

@@ -67,6 +67,10 @@ public Chain<List<T>> dropRight(final Integer n) {
         public Chain<List<T>> dropWhile(final Predicate<T> pred) {
             return new Chain<List<T>>($.dropWhile(value(), pred));
         }
+
+        public Chain<List<T>> dropRightWhile(final Predicate<T> pred) {
+            return new Chain<List<T>>($.dropRightWhile(value(), pred));
+        }
     }
 
     public static Chain chain(final String item) {
@@ -140,6 +144,15 @@ public List<T> dropWhile(final Predicate<T> pred) {
         return dropWhile(getIterable(), pred);
     }
 
+    public static <T> List<T> dropRightWhile(final Iterable<T> iterable, final Predicate<T> pred) {
+        final List<T> list = reverse(iterable);
+        return rest(list, findIndex(list, negate(pred)));
+    }
+
+    public List<T> dropRightWhile(final Predicate<T> pred) {
+        return dropRightWhile(getIterable(), pred);
+    }
+
     public static void main(String ... args) {
         final String message = "Underscore-java-lodash is a lodash plugin for underscore-java.\n\n"
             + "For docs, license, tests, and downloads, see: http://javadev.github.io/underscore-java";

lodash-plugin/src/test/java/com/github/underscore/lodash/LodashTest.java

@@ -126,6 +126,31 @@ public Boolean apply(Integer n) {
         }).toString());
     }
 
+/*
+_.dropRightWhile([1, 2, 3], function(n) {
+  return n > 1;
+});
+// → [1]
+*/
+    @Test
+    public void dropRightWhile() {
+        assertEquals("[1]", $.dropRightWhile(asList(1, 2, 3), new Predicate<Integer>() {
+            public Boolean apply(Integer n) {
+                return n > 1;
+            }
+        }).toString());
+        assertEquals("[1]", new $(asList(1, 2, 3)).dropRightWhile(new Predicate<Integer>() {
+            public Boolean apply(Integer n) {
+                return n > 1;
+            }
+        }).toString());
+        assertEquals("[1]", $.chain(asList(1, 2, 3)).dropRightWhile(new Predicate<Integer>() {
+            public Boolean apply(Integer n) {
+                return n > 1;
+            }
+        }).toString());
+    }
+
     @Test
     public void main() {
         $.main(new String[] {});