Show HN: Yet another JSON lib (C++17)

2 points by GeorgeHaldane 11 hours ago

Hello HN.

There is no shortage of excellent JSON libraries out there, so initially this one was built mostly out of curiosity for writing parsers.

JSON proved to be a quite pleasant format to work with so eventually this project evolved into a proper feature complete lib with an API quite similar to nlohmann_json, but much better performance (~2x-5x depending on the workload) and a very concise codebase (single header ~1k L.O.C., slightly larger than picojson), in short:

  - Concise single-header JSON lib
  - All JSON types map to std:: containers
  - Performance better than nlohmann_json / picojson, some metrics even beat RapidJSON
  - Supports reflection
  - Supports conversions for custom containers

The lib itself was mostly completed a few months ago, but now that it has proper CMake and CI tests different platforms I feel it is appropriate to post it here. Would love to hear some feedback on the design.

https://github.com/DmitriBogdanov/UTL/blob/master/docs/modul...