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nlohmann committed 2026-10-12 07:35:31 +00:00
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@@ -25,13 +25,27 @@ When the macro is not defined, the library will define it to its default value.
namespace.
```cpp
--8<-- "examples/nlohmann_json_namespace_no_version.cpp"
#include <iostream>
#define NLOHMANN_JSON_NAMESPACE_NO_VERSION 1
#include <nlohmann/json.hpp>
// macro needed to output the NLOHMANN_JSON_NAMESPACE as string literal
#define Q(x) #x
#define QUOTE(x) Q(x)
int main()
{
std::cout << QUOTE(NLOHMANN_JSON_NAMESPACE) << std::endl;
}
```
Output:
```json
--8<-- "examples/nlohmann_json_namespace_no_version.output"
nlohmann::json_abi
```
## See also