From 44a896dda5145c2eef59255c2d6d35796e2e305e Mon Sep 17 00:00:00 2001
From: Krzysztof Rybka <krzysztof.rybka@gmail.com>
Date: Thu, 2 May 2019 15:12:31 +0200
Subject: [PATCH] Take items of original array instead of dup and delete

---
 lib/fast_jsonapi/serialization_core.rb | 4 +---
 1 file changed, 1 insertion(+), 3 deletions(-)

diff --git a/lib/fast_jsonapi/serialization_core.rb b/lib/fast_jsonapi/serialization_core.rb
index 55994a0..7dd1b76 100644
--- a/lib/fast_jsonapi/serialization_core.rb
+++ b/lib/fast_jsonapi/serialization_core.rb
@@ -109,9 +109,7 @@ module FastJsonapi
       def remaining_items(items)
         return unless items.size > 1
 
-        items_copy = items.dup
-        items_copy.delete_at(0)
-        [items_copy.join('.').to_sym]
+        [items[1..-1].join('.').to_sym]
       end
 
       # includes handler