Add 'any' operator to Observable

Author: zsxwing

rxjava-core/src/main/java/rx/Observable.java

@@ -4188,36 +4188,36 @@ private boolean isInternalImplementation(Object o) {
         return p != null && p.getName().startsWith("rx.operators");
     }
 
-//    /**
-//     * Returns an {@link Observable} that emits <code>true</code> if the source
-//     * {@link Observable} is not empty, otherwise <code>false</code>.
-//     * 
-//     * @param source
-//     *            The source {@link Observable} to check if not empty.
-//     * @return A subscription function for creating the target Observable.
-//     * @see <a href=
-//     *      "http://msdn.microsoft.com/en-us/library/hh229905(v=vs.103).aspx"
-//     *      >MSDN: Observable.Any</a>
-//     */
-//    public Observable<Boolean> any() {
-//        return create(OperationAny.any(this));
-//    }
-//
-//    /**
-//     * Returns an {@link Observable} that emits <code>true</code> if all items
-//     * of the source {@link Observable} satisfy the given condition, otherwise
-//     * <code>false</code>.
-//     * 
-//     * @param predicate
-//     *            The condition all items have to satisfy.
-//     * @return A subscription function for creating the target Observable.
-//     * 
-//     * @see <a href=
-//     *      "http://msdn.microsoft.com/en-us/library/hh211993(v=vs.103).aspx"
-//     *      >MSDN: Observable.Any</a>
-//     */
-//    public Observable<Boolean> any(Func1<? super T, Boolean> predicate) {
-//        return create(OperationAny.any(this, predicate));
-//    }
+    /**
+     * Returns an {@link Observable} that emits <code>true</code> if the source
+     * {@link Observable} is not empty, otherwise <code>false</code>.
+     * 
+     * @param source
+     *            The source {@link Observable} to check if not empty.
+     * @return A subscription function for creating the target Observable.
+     * @see <a href=
+     *      "http://msdn.microsoft.com/en-us/library/hh229905(v=vs.103).aspx"
+     *      >MSDN: Observable.Any</a>
+     */
+    public Observable<Boolean> any() {
+        return create(OperationAny.any(this));
+    }
+
+    /**
+     * Returns an {@link Observable} that emits <code>true</code> if all items
+     * of the source {@link Observable} satisfy the given condition, otherwise
+     * <code>false</code>.
+     * 
+     * @param predicate
+     *            The condition all items have to satisfy.
+     * @return A subscription function for creating the target Observable.
+     * 
+     * @see <a href=
+     *      "http://msdn.microsoft.com/en-us/library/hh211993(v=vs.103).aspx"
+     *      >MSDN: Observable.Any</a>
+     */
+    public Observable<Boolean> any(Func1<? super T, Boolean> predicate) {
+        return create(OperationAny.any(this, predicate));
+    }
 
 }