Release date: 2019-03-20 SHA-256: ce9839370f28094c71107c405affb3b08c4a098154988014cbb0800b1c44a831 (json.hpp), 237c5e66e7f8186a02804ce9dbd5f69ce89fe7424ef84adf6142e973bd9532f4 (include.zip)

ℹ️ This release introduced a regression. Please update to version 3.6.1!

Summary

This release adds some convenience functions for JSON Pointers, introduces a contains function to check if a key is present in an object, and improves the performance of integer serialization. Furthermore, a lot of small bug fixes and improvements have been made. All changes are backward-compatible.

:sparkles: New Features

• Overworked the public interface for JSON Pointers. The creation of JSON Pointers is simplified with operator/ and operator/=. JSON Pointers can be inspected with empty, back, and parent_pointer, and manipulated with push_back and pop_back. #1434
• Added a boolean method contains to check whether an element exists in a JSON object with a given key. Returns false when called on non-object types. #1471 #1474

:bug: Bug Fixes

• Fixed a compilation issues with libc 2.12. #1483 #1514
• Fixed endian conversion on PPC64. #1489
• Fixed library to compile with GCC 9. #1472 #1492
• Fixed a compilation issue with GCC 7 on CentOS. #1496
• Fixed an integer overflow. #1447
• Fixed buffer flushing in serializer. #1445 #1446

:zap: Improvements

• The performance of dumping integers has been greatly improved. #1411
• Added CMake parameter JSON_Install to control whether the library should be installed (default: on). #1330
• Fixed a lot of compiler and linter warnings. #1400 #1435 #1502
• Reduced required CMake version from 3.8 to 3.1. #1409 #1428 #1441 #1498
• Added nodiscard attribute to meta(), array(), object(), from_cbor, from_msgpack, from_ubjson, from_bson, and parse. #1433

:hammer: Further Changes

• Added missing headers. #1500
• Fixed typos and broken links in README. #1417 #1423 #1425 #1451 #1455 #1491
• Fixed documentation of parse function. #1473
• Suppressed warning that cannot be fixed inside the library. #1401 #1468
• Imroved package manager suppert:
  • Updated Buckaroo instructions. #1495
  • Improved Meson support. #1463
  • Added Conda package manager documentation. #1430
  • Added NuGet package manager documentation. #1132
• Continuous Integration
  • Removed unstable or deprecated Travis builders (Xcode 6.4 - 8.2) and added Xcode 10.1 builder.
  • Added Clang 7 to Travis CI.
  • Fixed AppVeyor x64 builds. #1374 #1414
• Updated thirdparty libraries:
  • Catch 1.12.0 -> 1.12.2
  • Google Benchmark 1.3.0 -> 1.4.1
  • Doxygen 1.8.15 -> 1.8.16

:fire: Deprecated functions

This release does not deprecate any functions. As an overview, the following functions have been deprecated in earlier versions and will be removed in the next major version (i.e., 4.0.0):

• Function iterator_wrapper are deprecated. Please use the member function items() instead.
• Functions friend std::istream& operator<<(basic_json&, std::istream&) and friend std::ostream& operator>>(const basic_json&, std::ostream&) are deprecated. Please use friend std::istream& operator>>(std::istream&, basic_json&) and friend operator<<(std::ostream&, const basic_json&) instead.