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JSON to C++ Struct

C++ structs with std::optional and nlohmann::json.

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編集者注

Understanding · Header-only, macro-driven, surprisingly ergonomic.

この詳細な解説章は現在、英語版のみで提供されています。上の変換ツールはあなたの言語で動作しますが、長文の解説記事はまだ翻訳されていません。

よくある質問

Quick answers.

Which C++ version is required?

The generated code uses `std::optional`, which requires C++17 or later. For older standards, you may need to manually replace these with pointers or third-party optional types.

Do I need any external libraries?

Yes. The generated code is designed to work with the `nlohmann::json` library, also known as JSON for Modern C++, which is a popular header-only library.

How are null values handled?

Fields that are null or missing in the JSON input are automatically wrapped in `std::optional` to reflect their nullable status in the resulting struct.

Can it handle nested objects?

Yes. The tool recursively parses the JSON and creates separate structs for nested objects, ensuring clear organisation and reusability of types.

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