Allow to specify optional from and to indices for filling an array.

#KT-8382 Fixed

libraries/stdlib/src/generated/_SpecialJVM.kt

@@ -409,64 +409,64 @@ public fun <T> Array<T>.copyOfRange(from: Int, to: Int): Array<T> {
 /**
  * Fills original array with the provided value.
  */
-public fun BooleanArray.fill(element: Boolean): Unit {
+public fun BooleanArray.fill(element: Boolean, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun ByteArray.fill(element: Byte): Unit {
+public fun ByteArray.fill(element: Byte, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun CharArray.fill(element: Char): Unit {
+public fun CharArray.fill(element: Char, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun DoubleArray.fill(element: Double): Unit {
+public fun DoubleArray.fill(element: Double, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun FloatArray.fill(element: Float): Unit {
+public fun FloatArray.fill(element: Float, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun IntArray.fill(element: Int): Unit {
+public fun IntArray.fill(element: Int, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun LongArray.fill(element: Long): Unit {
+public fun LongArray.fill(element: Long, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun ShortArray.fill(element: Short): Unit {
+public fun ShortArray.fill(element: Short, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**
  * Fills original array with the provided value.
  */
-public fun <T> Array<T>.fill(element: T): Unit {
+public fun <T> Array<T>.fill(element: T, fromIndex: Int = 0, toIndex: Int = size()): Unit {
-    Arrays.fill(this, element)
+    Arrays.fill(this, fromIndex, toIndex, element)
 }
 
 /**

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

@@ -83,13 +83,13 @@ fun specialJVM(): List<GenericFunction> {
         annotations(InvariantArraysOfObjects) { """platformName("mutableCopyOf")"""}
     }
 
-    templates add f("fill(element: T)") {
+    templates add f("fill(element: T, fromIndex: Int = 0, toIndex: Int = size())") {
         only(InvariantArraysOfObjects, ArraysOfPrimitives)
         doc { "Fills original array with the provided value." }
         returns { "Unit" }
         body {
             """
-            Arrays.fill(this, element)
+            Arrays.fill(this, fromIndex, toIndex, element)
             """
         }
     }