Add isNotNullOrEmpty to Strings.

magro · magro · commit 6b35d99c0118 · 2011-08-26T11:58:56.000+02:00
diff --git a/core/src/main/java/fj/function/Strings.java b/core/src/main/java/fj/function/Strings.java
@@ -14,6 +14,16 @@ private Strings() {
     throw new UnsupportedOperationException();
   }
 
+  /**
+   * This function checks if a given String is neither <code>null</code> nor empty.
+   */
+  public static final F<String, Boolean> isNotNullOrEmpty = new F<String, Boolean>() {
+    @Override
+    public Boolean f(final String a) {
+      return a != null && a.length() > 0;
+    }
+  };
+
   /**
    * A curried version of {@link String#isEmpty()}.
    */
