Add U.defaultTo(value, defaultValue).

Author: javadev

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

@@ -2874,6 +2874,13 @@ public static <T> T checkNotNull(T reference, Object errorMessage) {
         return reference;
     }
 
+    public static <T> T defaultTo(T value, T defaultValue) {
+        if (value == null) {
+            return defaultValue;
+        }
+        return value;
+    }
+
     @SuppressWarnings("unchecked")
     protected static <T> List<T> newArrayList() {
         return new ArrayList<T>();

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

@@ -447,6 +447,16 @@ public void checkNotNullWithObjectAndMessage() {
         assertEquals("123", U.checkNotNull("123", "Error message"));
     }
 
+    @Test
+    public void defaultTo() {
+        assertNull(U.defaultTo(null, null));
+    }
+
+    @Test
+    public void defaultTo2() {
+        assertEquals("123", U.defaultTo("123", "124"));
+    }
+
     @Test
     @SuppressWarnings("unchecked")
     public void and() {