Issues

• The exception classes' create() functions are public by accident

  kind: enhancement/improvementstate: please discuss🔮 V4 candidate
  nlohmann/json#5786 · Filter by author nlohmann opened on Oct 8, 2026
  2

• Floats are truncated at the decimal point under locales with a multi-byte decimal point (fa_IR.UTF-8)

  kind: bug
  nlohmann/json#5660 · Filter by author nlohmann opened on Sep 29, 2026
  3

  

• Behavior differences in operator[] object creation with a json_pointer

  state: please discuss
  nlohmann/json#5357 · Filter by author nlohmann opened on Aug 3, 2026
  1

• CBOR: cbor_tag_handler_t::store rejects documents that ignore accepts, and drops tag numbers 6-20

  aspect: binary formatsstate: please discuss
  nlohmann/json#5316 · Filter by author nlohmann opened on Jul 27, 2026
  1

• Idea: arena / PMR document mode (O(1) teardown, allocation-free destruction)

  nlohmann/json#5298 · Filter by author nlohmann opened on Jul 22, 2026
  5

• Idea: canonical / deterministic serialization (RFC 8785 JCS)

  nlohmann/json#5297 · Filter by author nlohmann opened on Jul 22, 2026
  1

• Idea: lossless number round-tripping (raw / arbitrary-precision number mode)

  nlohmann/json#5296 · Filter by author nlohmann opened on Jul 22, 2026

• Idea: borrowed / zero-copy read-only view over a source buffer

  nlohmann/json#5295 · Filter by author nlohmann opened on Jul 22, 2026
  

• Ideas: exploring ways to reduce compilation time

  nlohmann/json#5294 · Filter by author nlohmann opened on Jul 22, 2026
  7

• Unable to use gnu mpz types for NumberIntegerType

  kind: bugkind: enhancement/improvementstate: please discuss
  nlohmann/json#3578 · Filter by author eric-wieser opened on Jul 11, 2022
  23

• Custom Precision on floating point numbers

  state: waiting for PR
  nlohmann/json#1170 · Filter by author DarkZeros opened on Jul 19, 2018
  39