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api/macros/json_has_static_rtti/index.md

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+# JSON_HAS_STATIC_RTTI
+
+```
+#define JSON_HAS_STATIC_RTTI /* value */
+```
+
+This macro indicates whether the standard library has any support for RTTI (run time type information). Possible values are `1` when supported or `0` when unsupported.
+
+## Default definition
+
+The default value is detected based on the preprocessor macro `_HAS_STATIC_RTTI`.
+
+When the macro is not defined, the library will define it to its default value.
+
+## Examples
+
+Example
+
+The code below forces the library to enable support for libraries with RTTI dependence:
+
+```
+#define JSON_HAS_STATIC_RTTI 1
+#include <nlohmann/json.hpp>
+
+...
+```
+
+## Version history
+
+- Added in version 3.11.3.