update ceph source to reef 18.1.2

[ceph.git] / ceph / src / jaegertracing / opentelemetry-cpp / third_party / nlohmann-json / doc / examples / emplace_back.cpp

diff --git a/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/emplace_back.cpp b/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/emplace_back.cpp
new file mode 100644 (file)
index 0000000..e979a94
--- /dev/null
+++ b/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/emplace_back.cpp
@@ -0,0 +1,24 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create JSON values
+    json array = {1, 2, 3, 4, 5};
+    json null;
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+
+    // add values
+    array.emplace_back(6);
+    null.emplace_back("first");
+    null.emplace_back(3, "second");
+
+    // print values
+    std::cout << array << '\n';
+    std::cout << null << '\n';
+}