Index: src/java/jedi/functional/FunctionalPrimitives.java
===================================================================
--- src/java/jedi/functional/FunctionalPrimitives.java	(revision 116)
+++ src/java/jedi/functional/FunctionalPrimitives.java	Thu Feb 18 14:43:47 GMT 2010
@@ -879,4 +879,13 @@
 		}
 		return value;
 	}
+
+  public static <T> T first(Collection<T> all, Filter<T> filter) {
+    for (T t : all) {
+      if(filter.execute(t)) {
+        return t;
-}
+      }
+    }
+    return null;
+  }
+}
Index: src/test/jedi/functional/FunctionalPrimitivesTest.java
===================================================================
--- src/test/jedi/functional/FunctionalPrimitivesTest.java	(revision 116)
+++ src/test/jedi/functional/FunctionalPrimitivesTest.java	Thu Feb 18 14:49:23 GMT 2010
@@ -6,45 +6,7 @@
 import static jedi.functional.Coercions.asList;
 import static jedi.functional.Coercions.list;
 import static jedi.functional.Coercions.set;
-import static jedi.functional.FunctionalPrimitives.append;
-import static jedi.functional.FunctionalPrimitives.collect;
-import static jedi.functional.FunctionalPrimitives.drop;
-import static jedi.functional.FunctionalPrimitives.dropRight;
-import static jedi.functional.FunctionalPrimitives.flatten;
-import static jedi.functional.FunctionalPrimitives.fold;
-import static jedi.functional.FunctionalPrimitives.foldPowerset;
-import static jedi.functional.FunctionalPrimitives.forEach;
-import static jedi.functional.FunctionalPrimitives.group;
-import static jedi.functional.FunctionalPrimitives.head;
-import static jedi.functional.FunctionalPrimitives.headOption;
-import static jedi.functional.FunctionalPrimitives.headOrDefaultIfEmpty;
-import static jedi.functional.FunctionalPrimitives.headOrNullIfEmpty;
-import static jedi.functional.FunctionalPrimitives.join;
-import static jedi.functional.FunctionalPrimitives.last;
-import static jedi.functional.FunctionalPrimitives.lastOption;
-import static jedi.functional.FunctionalPrimitives.lastOrDefaultIfEmpty;
-import static jedi.functional.FunctionalPrimitives.lastOrNullIfEmpty;
-import static jedi.functional.FunctionalPrimitives.listTabulate;
-import static jedi.functional.FunctionalPrimitives.longest;
-import static jedi.functional.FunctionalPrimitives.only;
-import static jedi.functional.FunctionalPrimitives.partition;
-import static jedi.functional.FunctionalPrimitives.pop;
-import static jedi.functional.FunctionalPrimitives.popOption;
-import static jedi.functional.FunctionalPrimitives.powerset;
-import static jedi.functional.FunctionalPrimitives.produce;
-import static jedi.functional.FunctionalPrimitives.reject;
-import static jedi.functional.FunctionalPrimitives.reverse;
-import static jedi.functional.FunctionalPrimitives.select;
-import static jedi.functional.FunctionalPrimitives.sequence;
-import static jedi.functional.FunctionalPrimitives.shortest;
-import static jedi.functional.FunctionalPrimitives.slice;
-import static jedi.functional.FunctionalPrimitives.split;
-import static jedi.functional.FunctionalPrimitives.tabulate;
-import static jedi.functional.FunctionalPrimitives.tail;
-import static jedi.functional.FunctionalPrimitives.take;
-import static jedi.functional.FunctionalPrimitives.takeMiddle;
-import static jedi.functional.FunctionalPrimitives.takeRight;
-import static jedi.functional.FunctionalPrimitives.zip;
+import static jedi.functional.FunctionalPrimitives.*;
 import static jedi.option.Options.none;
 import static jedi.option.Options.some;
 
@@ -651,4 +613,29 @@
 		Object returnValue = foldPowerset("a", list("x", "y", "z"), (Functor2) functorMock.proxy());
 		assertEquals("i", returnValue);
 	}
+
+  @Test
+  public void firstReturnsTheFirstElementFromTheCollectionMatchingTheFilter() {
+    List<Integer> all = list(1,2,3,4);
+    assertEquals(new Integer(2), first(all, greaterThan(1)));
-}
+  }
+
+  @Test
+  public void firstReturnsNullIfNoElementMatchesTheFilter() {
+    List<Integer> all = list(1,2,3,4);
+    assertNull(first(all, greaterThan(5)));
+  }
+
+  @Test
+  public void firstCanHandleAnEmptyCollection() {
+    assertNull(first(Collections.EMPTY_LIST, greaterThan(5)));
+  }
+
+  private Filter<Integer> greaterThan(final Integer boundary) {
+    return new Filter<Integer>(){
+      public Boolean execute(Integer value) {
+        return value > boundary;
+      }
+    };
+  }
+}