From b3e468a26e18e8d747789ea6336ccbc905b7fc2b Mon Sep 17 00:00:00 2001
From: Edmund Johnson <edmund@jumpingmouse.uk>
Date: Tue, 1 May 2018 16:08:48 +0100
Subject: [PATCH] Remove unnecessary toSet() conversion in Fold solution

---
 Kotlin Koans/Collections/Fold/Solution.kt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Kotlin Koans/Collections/Fold/Solution.kt b/Kotlin Koans/Collections/Fold/Solution.kt
index 85e18ae..213e45f 100644
--- a/Kotlin Koans/Collections/Fold/Solution.kt	
+++ b/Kotlin Koans/Collections/Fold/Solution.kt	
@@ -6,6 +6,6 @@ fun Shop.getSetOfProductsOrderedByEveryCustomer(): Set<Product> {
     /*<taskWindow>*/val allProducts = customers.flatMap { it.orders.flatMap { it.products }}.toSet()
     return customers.fold(allProducts, {
         orderedByAll, customer ->
-        orderedByAll.intersect(customer.orders.flatMap { it.products }.toSet())
+        orderedByAll.intersect(customer.orders.flatMap { it.products })
     })/*</taskWindow>*/
 }
\ No newline at end of file