update ceph source to reef 18.1.2

[ceph.git] / ceph / src / jaegertracing / opentelemetry-cpp / third_party / nlohmann-json / doc / mkdocs / docs / api / basic_json / object_comparator_t.md

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+# <small>nlohmann::basic_json::</small>object_comparator_t
+
+```cpp
+using object_comparator_t = std::less<StringType>;  // until C++14
+
+using object_comparator_t = std::less<>;            // since C++14
+```
+
+The comparator used in [`object_t`](object_t.md).
+
+When C++14 is detected, a transparent com parator is used which, when combined with perfect forwarding on find() and
+count() calls, prevents unnecessary string construction.
+
+## Version history
+
+- Unknown.