updating examples and deprecations for qodana

Author: Jolanrensen

examples/src/main/kotlin/org/jetbrains/kotlinx/spark/examples/CachedOperations.kt

@@ -31,9 +31,7 @@ fun main() {
 
                 filter { it._1 % 2 == 0 }.showDS()
             }
-            .map { (first, second) ->
-                first X second X (first + second) * 2
-            }
+            .map { it.appendedBy(it._1 + it._2 * 2) }
             .show()
     }
 }

examples/src/main/kotlin/org/jetbrains/kotlinx/spark/examples/Group.kt

@@ -21,7 +21,6 @@ package org.jetbrains.kotlinx.spark.examples
 
 import org.jetbrains.kotlinx.spark.api.*
 import org.jetbrains.kotlinx.spark.api.tuples.*
-import org.jetbrains.kotlinx.spark.api.tuples.t
 
 fun main() {
     withSpark {
@@ -31,7 +30,9 @@ fun main() {
             2 X "c",
         )
             .groupByKey { it._1 }
-            .reduceGroupsK { a, b -> tupleOf(_1 = a._1 + b._1, _2 = a._2 + b._2) }
+            .reduceGroupsK { a, b ->
+                tupleOf(a._1 + b._1, a._2 + b._2)
+            }
             .show()
     }
 }

examples/src/main/kotlin/org/jetbrains/kotlinx/spark/examples/Main.kt

@@ -44,7 +44,7 @@ object Main {
                     Q(3, 3 X "333"),
                 )
             )
-            .map { (a, b) -> t(_1 = a + b._1, _2 = b._2?.length) }
+            .map { (a, b) -> t(a + b._1, b._2?.length) }
             .map { it: Tuple2<Int, Int?> -> it + 1 } // add counter
 
         val pairs = spark

examples/src/main/kotlin/org/jetbrains/kotlinx/spark/examples/MapAndListOperations.kt

@@ -30,7 +30,7 @@ fun main() {
         )
             .flatMap {
                 it.toList()
-                    .map { (first, tuple) -> listOf(first, tuple._1, tuple._2, tuple._3) }
+                    .map { (first, tuple) -> (first + tuple).toList() }
                     .iterator()
             }
             .flatten()