added filterNot method

stdlib/ktSrc/JavaIterables.kt

@@ -40,6 +40,15 @@ inline fun <T> java.lang.Iterable<T>.filter(result: Collection<T> = ArrayList<T>
   return result
 }
 
+/** Returns a new collection containing all elements in this collection which do not match the given predicate */
+inline fun <T> java.lang.Iterable<T>.filterNot(result: Collection<T> = ArrayList<T>(), predicate: (T)-> Boolean) : Collection<T> {
+  for (elem in this) {
+    if (!predicate(elem))
+      result.add(elem)
+  }
+  return result
+}
+
 /**
   * Returns the result of transforming each item in the collection to a one or more values which
   * are concatenated together into a single collection

stdlib/ktSrc/generated/ArraysFromJavaIterables.kt

@@ -41,6 +41,15 @@ inline fun <T> Array<T>.filter(result: Collection<T> = ArrayList<T>(), predicate
   return result
 }
 
+/** Returns a new collection containing all elements in this collection which do not match the given predicate */
+inline fun <T> Array<T>.filterNot(result: Collection<T> = ArrayList<T>(), predicate: (T)-> Boolean) : Collection<T> {
+  for (elem in this) {
+    if (!predicate(elem))
+      result.add(elem)
+  }
+  return result
+}
+
 /**
   * Returns the result of transforming each item in the collection to a one or more values which
   * are concatenated together into a single collection

stdlib/ktSrc/generated/StandardFromJavaIterables.kt

@@ -41,6 +41,15 @@ inline fun <T> Iterable<T>.filter(result: Collection<T> = ArrayList<T>(), predic
   return result
 }
 
+/** Returns a new collection containing all elements in this collection which do not match the given predicate */
+inline fun <T> Iterable<T>.filterNot(result: Collection<T> = ArrayList<T>(), predicate: (T)-> Boolean) : Collection<T> {
+  for (elem in this) {
+    if (!predicate(elem))
+      result.add(elem)
+  }
+  return result
+}
+
 /**
   * Returns the result of transforming each item in the collection to a one or more values which
   * are concatenated together into a single collection

testlib/test/CollectionTest.kt

@@ -39,6 +39,16 @@ class CollectionTest() : TestSupport() {
     assertEquals(arrayList("foo"), foo)
   }
 
+  fun testFilterNot() {
+    val foo = data.filterNot{it.startsWith("b")}
+
+    assert {
+      foo.all{it.startsWith("f")}
+    }
+    assertEquals(1, foo.size)
+    assertEquals(arrayList("foo"), foo)
+  }
+
   fun testFilterIntoLinkedList() {
     // TODO would be nice to avoid the <String>
     val foo = data.filter(linkedList<String>()){it.startsWith("f")}