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diff --git a/include/lib/ArduinoJson/TypeTraits/IsArray.hpp b/include/lib/ArduinoJson/TypeTraits/IsArray.hpp
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+// ArduinoJson - arduinojson.org
+// Copyright Benoit Blanchon 2014-2018
+// MIT License
+
+#pragma once
+
+namespace ArduinoJson {
+namespace Internals {
+
+// A meta-function that return the type T without the const modifier
+template <typename T>
+struct IsArray {
+ static const bool value = false;
+};
+template <typename T>
+struct IsArray<T[]> {
+ static const bool value = true;
+};
+template <typename T, size_t TN>
+struct IsArray<T[TN]> {
+ static const bool value = true;
+};
+}
+}