⚗️ experiment from #2685 (comment)

nlohmann · Dec 23, 2021 · 253f39c · 253f39c
1 parent 47b9b7e
commit 253f39c
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diff --git a/include/nlohmann/json.hpp b/include/nlohmann/json.hpp
@@ -3816,6 +3816,19 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
         JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
     }
 
+    // see https://github.com/nlohmann/json/pull/2685#issuecomment-994015092
+    template<typename T, std::size_t n>
+    reference operator[](T * (&key)[n])
+    {
+        return operator[](static_cast<const T>(key));
+    }
+
+    template<typename T, std::size_t n>
+    const_reference operator[](T * (&key)[n]) const
+    {
+        return operator[](static_cast<const T>(key));
+    }
+
     /*!
     @brief access specified object element with default value
 

diff --git a/single_include/nlohmann/json.hpp b/single_include/nlohmann/json.hpp
@@ -21383,6 +21383,19 @@ class basic_json // NOLINT(cppcoreguidelines-special-member-functions,hicpp-spec
         JSON_THROW(type_error::create(305, "cannot use operator[] with a string argument with " + std::string(type_name()), *this));
     }
 
+    // see https://github.com/nlohmann/json/pull/2685#issuecomment-994015092
+    template<typename T, std::size_t n>
+    reference operator[](T * (&key)[n])
+    {
+        return operator[](static_cast<const T>(key));
+    }
+
+    template<typename T, std::size_t n>
+    const_reference operator[](T * (&key)[n]) const
+    {
+        return operator[](static_cast<const T>(key));
+    }
+
     /*!
     @brief access specified object element with default value