KT-20357 Add sample code for Pair/Triple.toList

libraries/stdlib/samples/test/samples/misc/tuples.kt

@@ -20,4 +20,27 @@ class Tuples {
         assertPrints(c, "[null]")
     }
 
+    @Sample
+    fun pairToList() {
+        val mixedList: List<Any> = Pair(1, "a").toList()
+        assertPrints(mixedList, "[1, a]")
+        assertTrue(mixedList[0] is Int)
+        assertTrue(mixedList[1] is String)
+
+        val intList: List<Int> = Pair(0, 1).toList()
+        assertPrints(intList, "[0, 1]")
+    }
+
+    @Sample
+    fun tripleToList() {
+        val mixedList: List<Any> = Triple(1, "a", 0.5).toList()
+        assertPrints(mixedList, "[1, a, 0.5]")
+        assertTrue(mixedList[0] is Int)
+        assertTrue(mixedList[1] is String)
+        assertTrue(mixedList[2] is Double)
+
+        val intList: List<Int> = Triple(0, 1, 2).toList()
+        assertPrints(intList, "[0, 1, 2]")
+    }
+
 }

libraries/stdlib/src/kotlin/util/Tuples.kt

@@ -44,6 +44,7 @@ public infix fun <A, B> A.to(that: B): Pair<A, B> = Pair(this, that)
 
 /**
  * Converts this pair into a list.
+ * @sample samples.misc.Tuples.pairToList
  */
 public fun <T> Pair<T, T>.toList(): List<T> = listOf(first, second)
 
@@ -76,5 +77,6 @@ public data class Triple<out A, out B, out C>(
 
 /**
  * Converts this triple into a list.
+ * @sample samples.misc.Tuples.tripleToList
  */
 public fun <T> Triple<T, T, T>.toList(): List<T> = listOf(first, second, third)