Question 1

How to parse JSON with RapidJSON in C++?

Accepted Answer

Include rapidjson/document.h, use Document::Parse() on a JSON string, and check for errors with HasParseError(). The simpledom example shows basic usage but omits error handling for clarity.

Question 2

RapidJSON vs nlohmann/json: which is better?

Accepted Answer

RapidJSON is better for performance-critical and memory-constrained apps due to its speed and minimal dependencies. nlohmann/json offers a more modern, intuitive API with automatic memory management and exceptions, making it easier for rapid development.

Question 3

Does RapidJSON support JSON Schema validation?

Accepted Answer

Yes, it includes JSON Schema validation as a feature, with examples like schemavalidator.cpp. However, it might not be as comprehensive or up-to-date as dedicated schema libraries, and implementation requires additional setup.

Question 4

How to handle errors in RapidJSON parsing?

Accepted Answer

After calling Parse(), use HasParseError() to check for errors, then GetParseError() and GetErrorOffset() to get details. This manual approach adds code but gives fine-grained control over error management.

Question 5

Is RapidJSON still maintained in 2023?

Accepted Answer

The last major release was in 2016, and while the library is stable, GitHub activity shows slower development. It's reliable for existing use cases but may lack new features or quick bug fixes compared to actively maintained alternatives.

Question 6

Can RapidJSON parse UTF-16 JSON files?

Accepted Answer

Yes, it supports multiple encodings including UTF-16. Use AutoUTF or specific readers like GenericReader with UTF16<> to handle encoding detection and transcoding seamlessly, as documented in the Unicode features.

RapidJSON

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