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2026-10-03 05:43:12 +00:00
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api/macros/json_use_implicit_conversions/index.md
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@@ -22,6 +22,8 @@ Implicit conversions will be switched off by default in the next major release o
You can prepare existing code by already defining `JSON_USE_IMPLICIT_CONVERSIONS` to `0` and replace any implicit conversions with calls to [`get`](https://json.nlohmann.me/api/basic_json/get/index.md).
See the [migration guide](https://json.nlohmann.me/integration/migration_guide/#replace-implicit-conversions) for how to update existing code.
Automatic migration
The community-maintained clang-tidy check `modernize-nlohmann-json-explicit-conversions` rewrites implicit conversions into explicit calls to [`get`](https://json.nlohmann.me/api/basic_json/get/index.md); for example, `int i = j;` becomes `int i = j.get<int>();`. The check is not part of clang-tidy itself, and it does not catch every case (for example, constructing a `std::optional` from a JSON value), so review the result. See [discussion #4610](https://github.com/nlohmann/json/discussions/4610) for how to build and use it.