some more predicates/transformers

solita · Aug 17, 2014 · da1f49a · da1f49a
1 parent 9f1ddff
commit da1f49a
Show file tree

Hide file tree

Showing 4 changed files with 43 additions and 6 deletions.
diff --git a/JavaBuildPath.png b/JavaBuildPath.png
diff --git a/pom.xml b/pom.xml
@@ -11,12 +11,6 @@
                         <include>**/*.java</include>
                     </includes>
                 </resource>
-                <resource>
-                    <directory>${project.build.directory}/generated-sources/apt</directory>
-                    <includes>
-                        <include>**/*.java</include>
-                    </includes>
-                </resource>
         </resources>
 
         <plugins>

diff --git a/src/main/java/fi/solita/utils/functional/Predicates.java b/src/main/java/fi/solita/utils/functional/Predicates.java
@@ -131,4 +131,11 @@ public boolean accept(Object candidate) {
             return candidate instanceof Serializable || candidate != null && candidate.getClass().isPrimitive();
         }
     };
+
+    public static final Predicate<Option<?>> defined = new Predicate<Option<?>>() {
+        @Override
+        public boolean accept(Option<?> candidate) {
+            return candidate.isDefined();
+        }
+    };
 }
diff --git a/src/main/java/fi/solita/utils/functional/Transformers.java b/src/main/java/fi/solita/utils/functional/Transformers.java
@@ -194,6 +194,42 @@ public static final <T> Transformer<Either<?,T>,Option<T>> eitherRight() {
         return (Transformer<Either<?,T>,Option<T>>)(Object)eitherRight;
     }
 
+    private static final Transformer<Option<?>,?> get = new Transformer<Option<?>,Object>() {
+        @Override
+        public Object transform(Option<?> source) {
+            return source.get();
+        }
+    };
+    @SuppressWarnings("unchecked")
+    public static final <T> Transformer<Option<T>,T> get() {
+        return (Transformer<Option<T>,T>)(Object)get;
+    }
+
+    public static final Transformer<String,Iterable<Character>> it = new Transformer<String,Iterable<Character>>() {
+        @Override
+        public Iterable<Character> transform(String source) {
+            return it(source);
+        }
+    };
+
+    private static final Transformer<Iterable<?>, Object> head = new Transformer<Iterable<?>,Object>() {
+        @Override
+        public Object transform(Iterable<?> source) {
+            return Functional.head(source);
+        }
+    };
+    @SuppressWarnings("unchecked")
+    public static final <T> Transformer<Iterable<T>,T> head() {
+        return (Transformer<Iterable<T>,T>)(Object)head;
+    }
+
+    public static final Transformer<Iterable<?>, Long> size = new Transformer<Iterable<?>,Long>() {
+        @Override
+        public Long transform(Iterable<?> source) {
+            return Functional.size(source);
+        }
+    };
+
     private static final Transformer<Tuple._1<?>,?> _1 = new Transformer<Tuple._1<?>,Object>() {
         @Override
         public Object transform(Tuple._1<?> source) {