update ceph source to reef 18.1.2

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

diff --git a/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/cbegin.cpp b/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/cbegin.cpp
new file mode 100644 (file)
index 0000000..bed2b37
--- /dev/null
+++ b/ceph/src/jaegertracing/opentelemetry-cpp/third_party/nlohmann-json/doc/examples/cbegin.cpp
@@ -0,0 +1,16 @@
+#include <iostream>
+#include <nlohmann/json.hpp>
+
+using json = nlohmann::json;
+
+int main()
+{
+    // create an array value
+    const json array = {1, 2, 3, 4, 5};
+
+    // get an iterator to the first element
+    json::const_iterator it = array.cbegin();
+
+    // serialize the element that the iterator points to
+    std::cout << *it << '\n';
+}