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examples/operator_array__json_pointer_const.cpp

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+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+using namespace nlohmann::literals;
+
+int main()
+{
+    // create a JSON value
+    const json j =
+    {
+        {"number", 1}, {"string", "foo"}, {"array", {1, 2}}
+    };
+
+    // read-only access
+
+    // output element with JSON pointer "/number"
+    std::cout << j["/number"_json_pointer] << '\n';
+    // output element with JSON pointer "/string"
+    std::cout << j["/string"_json_pointer] << '\n';
+    // output element with JSON pointer "/array"
+    std::cout << j["/array"_json_pointer] << '\n';
+    // output element with JSON pointer "/array/1"
+    std::cout << j["/array/1"_json_pointer] << '\n';
+}