stdlib: stream() for Map #KT-6547 Fixed

libraries/stdlib/src/generated/_Streams.kt

@@ -119,6 +119,17 @@ public fun <T> Iterable<T>.stream(): Stream<T> {
     }
 }
 
+/**
+ * Returns a stream from the given collection
+ */
+public fun <K, V> Map<K, V>.stream(): Stream<Map.Entry<K, V>> {
+    return object : Stream<Map.Entry<K, V>> {
+        override fun iterator(): Iterator<Map.Entry<K, V>> {
+            return this@stream.iterator()
+        }
+    }
+}
+
 /**
  * Returns a stream from the given collection
  */

libraries/stdlib/test/collections/MapTest.kt

@@ -66,6 +66,12 @@ class MapTest {
         assertEquals("beverage,beer,location,Mells,name,James", list.join(","))
     }
 
+    test fun stream() {
+        val map = mapOf("beverage" to "beer", "location" to "Mells", "name" to "James")
+        val named = map.stream().filter { it.key == "name" }.single()
+        assertEquals("James", named.value)
+    }
+
     test fun iterateWithProperties() {
         val map = mapOf("beverage" to "beer", "location" to "Mells", "name" to "James")
         val list = arrayListOf<String>()

libraries/tools/kotlin-stdlib-gen/src/templates/Stream.kt

@@ -6,6 +6,7 @@ fun streams(): List<GenericFunction> {
     val templates = arrayListOf<GenericFunction>()
 
     templates add f("stream()") {
+        include(Maps)
         doc { "Returns a stream from the given collection" }
         returns("Stream<T>")
         body {