Add support for the drop().

Author: javadev

.travis.yml

@@ -7,7 +7,7 @@ jdk:
   - oraclejdk8
 
 script:
-  - mvn clean package jacoco:report coveralls:jacoco
+  - mvn clean install jacoco:report coveralls:jacoco
   - mvn -f math-plugin/pom.xml clean package jacoco:report
   - mvn -f string-plugin/pom.xml clean package jacoco:report
   - mvn -f lodash-plugin/pom.xml clean package jacoco:report

lodash-plugin/pom.xml

@@ -202,7 +202,7 @@
     <dependency>
       <groupId>com.github.javadev</groupId>
       <artifactId>underscore</artifactId>
-      <version>1.3</version>
+      <version>1.4-SNAPSHOT</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>

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

@@ -46,6 +46,14 @@ public Chain(final List<T> list) {
         public Chain<List<List<T>>> chunk(final Integer size) {
             return new Chain<List<List<T>>>($.chunk(value(), size));
         }
+
+        public Chain<List<T>> drop() {
+            return new Chain<List<T>>($.drop(value()));
+        }
+
+        public Chain<List<T>> drop(final Integer n) {
+            return new Chain<List<T>>($.drop(value(), n));
+        }
     }
 
     public static Chain chain(final String item) {
@@ -79,6 +87,22 @@ public List<List<T>> chunk(final Integer size) {
         return chunk(getIterable(), size);
     }
 
+    public static <T> List<T> drop(final Iterable<T> list) {
+        return rest(newArrayList(list));
+    }
+
+    public List<T> drop() {
+        return drop(getIterable());
+    }
+
+    public static <T> List<T> drop(final Iterable<T> list, final Integer n) {
+        return rest(newArrayList(list), n);
+    }
+
+    public List<T> drop(final Integer n) {
+        return drop(getIterable(), n);
+    }
+
     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

@@ -50,6 +50,31 @@ public void chunk() {
         assertEquals("[[a, b, c], [d]]", $.chunk(asList("a", "b", "c", "d"), 3).toString());
     }
 
+/*
+_.drop([1, 2, 3]);
+// → [2, 3]
+
+_.drop([1, 2, 3], 2);
+// → [3]
+
+_.drop([1, 2, 3], 5);
+// → []
+
+_.drop([1, 2, 3], 0);
+// → [1, 2, 3]
+*/
+    @Test
+    public void drop() {
+        assertEquals("[2, 3]", $.drop(asList(1, 2, 3)).toString());
+        assertEquals("[2, 3]", new $(asList(1, 2, 3)).drop().toString());
+        assertEquals("[2, 3]", $.chain(asList(1, 2, 3)).drop().toString());
+        assertEquals("[3]", $.drop(asList(1, 2, 3), 2).toString());
+        assertEquals("[3]", new $(asList(1, 2, 3)).drop(2).toString());
+        assertEquals("[3]", $.chain(asList(1, 2, 3)).drop(2).toString());
+        assertEquals("[]", $.drop(asList(1, 2, 3), 5).toString());
+        assertEquals("[1, 2, 3]", $.drop(asList(1, 2, 3), 0).toString());
+    }
+
     @Test
     public void main() {
         $.main(new String[] {});

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

@@ -665,7 +665,7 @@ public static <E> List<E> rest(final List<E> list) {
     }
 
     public static <E> List<E> rest(final List<E> list, int n) {
-        return list.subList(n, list.size());
+        return list.subList(Math.min(n, list.size()), list.size());
     }
 
     public static <E> E[] rest(final E[] array) {