renamed the rather long getOrElseUpdate to a simpler getOrPut which is a bit simpler and more accurate; as a new entry is put into the Map if its null

stdlib/ktSrc/JavaIterables.kt

@@ -110,7 +110,7 @@ inline fun <T> java.lang.Iterable<T>.foldRight(initial: T, operation: (it: T, it
 inline fun <T,K> java.lang.Iterable<T>.groupBy(result: Map<K,List<T>> = HashMap<K,List<T>>(), toKey: (T)-> K) : Map<K,List<T>> {
   for (elem in this) {
     val key = toKey(elem)
-    val list = result.getOrElseUpdate(key){ ArrayList<T>() }
+    val list = result.getOrPut(key){ ArrayList<T>() }
     list.add(elem)
   }
   return result

stdlib/ktSrc/JavaUtil.kt

@@ -19,8 +19,9 @@ inline fun linkedList<T>(vararg values: T) : LinkedList<T>  = values.to(LinkedLi
 /** Returns a new HashSet with a variable number of initial elements */
 inline fun hashSet<T>(vararg values: T) : HashSet<T> = values.to(HashSet<T>(values.size))
 
-/** Returns a new hash map */
-inline fun <K,V> hashMap() = HashMap<K,V>()
+inline fun <K,V> hashMap(): HashMap<K,V> = HashMap<K,V>()
+
+inline fun <K,V> sortedMap(): SortedMap<K,V> = TreeMap<K,V>()
 
 
 val Collection<*>.indices : IntRange

stdlib/ktSrc/JavaUtilMap.kt

@@ -41,7 +41,7 @@ inline fun <K,V> java.util.Map<K,V>.getOrElse(key: K, defaultValue: ()-> V) : V
 }
 
 /** Returns the value for the given key or the result of the defaultValue function is put into the map for the given value and returned */
-inline fun <K,V> java.util.Map<K,V>.getOrElseUpdate(key: K, defaultValue: ()-> V) : V {
+inline fun <K,V> java.util.Map<K,V>.getOrPut(key: K, defaultValue: ()-> V) : V {
   val current = this.get(key)
   if (current != null) {
     return current

testlib/test/MapTest.kt

@@ -21,11 +21,11 @@ class MapTest() : TestSupport() {
     assertEquals(0, data.size)
   }
 
-  fun testGetOrElseUpdate() {
-    val a = data.getOrElseUpdate("foo"){2}
+  fun testGetOrPut() {
+    val a = data.getOrPut("foo"){2}
     assertEquals(2, a)
 
-    val b = data.getOrElseUpdate("foo"){3}
+    val b = data.getOrPut("foo"){3}
     assertEquals(2, b)
 
     assertEquals(1, data.size())