Files
json/docs/mkdocs/docs/integration/index.md
Niels Lohmann 061c30310e Document json_document and json_view
- API pages for basic_json_document and basic_json_view, one per member,
  and for the four aliases, each with an example
- features/json_view.md: the problem the view solves, ownership and
  lifetime, what matches basic_json::parse() and what differs, and when
  to choose json, ordered_json, SAX, or the view
- the examples show why one would use the view, not only how: borrowed
  vs. owned input, reading a few fields and materializing one subtree,
  reusing a document across many messages
- registered in the mkdocs navigation, llms.txt, the docset, the
  exceptions page (out_of_range.416), architecture.md, the integration
  page, and the README; the yyjson credit is added to the README and
  license.md

Signed-off-by: Niels Lohmann <mail@nlohmann.me>
2026-09-30 20:58:44 +02:00

1.2 KiB

Header only

json.hpp is the single required file in single_include/nlohmann or released here. You need to add

#include <nlohmann/json.hpp>

// for convenience
using json = nlohmann::json;

to the files you want to process JSON and set the necessary switches to enable C++11 (e.g., -std=c++11 for GCC and Clang).

You can further use file single_include/nlohmann/json_fwd.hpp for forward declarations, and file single_include/nlohmann/json_literals.hpp for the user-defined string literals if you define JSON_NO_AUTOMATIC_UDLS.

For the read-only, non-owning basic_json_document/basic_json_view types, additionally include single_include/nlohmann/json_view.hpp; see Zero-copy JSON views.