deploy: 4155e2938f

examples/basic_json_document__root.cpp

@@ -0,0 +1,19 @@
+#include <iostream>
+#include <nlohmann/json_view.hpp>
+
+using json_document = nlohmann::json_document;
+
+int main()
+{
+    std::cout << std::boolalpha;
+
+    json_document doc = json_document::parse(R"({"greeting": "hi"})");
+    std::cout << doc.root().is_object() << '\n';
+
+    // root() is a cheap handle, not a copy: repeated calls observe the same value
+    std::cout << (doc.root().type() == doc.root().type()) << '\n';
+
+    // the root of a failed parse (allow_exceptions == false) is discarded
+    json_document failed = json_document::parse("{", false);
+    std::cout << failed.root().is_discarded() << '\n';
+}