Replace is Array<T> with .isArrayOf<T>()

libraries/stdlib/src/kotlin/jvm/IsArrayOf.kt

@@ -0,0 +1,26 @@
+/*
+ * Copyright 2010-2015 JetBrains s.r.o.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package kotlin.jvm
+
+import kotlin.jvm.internal.Intrinsic
+
+/**
+ * Checks if array can contain element of type [T].
+ */
+@Intrinsic("kotlin.jvm.isArrayOf")
+public fun <reified T : Any> Array<*>.isArrayOf(): Boolean =
+        T::class.java.isAssignableFrom(this.javaClass.componentType)

libraries/stdlib/test/collections/CollectionJVMTest.kt

@@ -123,7 +123,7 @@ class CollectionJVMTest {
         assertEquals(2, arr.size())
         todo {
             assertTrue {
-                arr is Array<String>
+                arr.isArrayOf<String>()
             }
         }
     }

libraries/stdlib/test/collections/CollectionTest.kt

@@ -403,7 +403,7 @@ class CollectionTest {
         assertEquals(2, arr.size())
         todo {
             assertTrue {
-                arr is Array<String>
+                arr.isArrayOf<String>()
             }
         }
     }