GIgiancarlostoro·Oct 28, 2020
The JSON library is impressive:
https://github.com/nlohmann/json#examples
In Ask HN: Good C++ code bases to read?nlohmann
json
C++2015–2025
nlohmann / json
json
JSON for Modern C++
32Distinct people
38Mentions
0Explicit recommenders
50.9KGitHub stars
What to know before exploring
What it is
JSON for Modern C++
GitHub
Where it is used
No documented product use was verified in the last source check.
What people are saying
No recommendation phrase was found in the indexed comments.
No classified warning is attached to this page. Read the discussions before treating silence as approval.
Also in these discussions
- miloyip/nativejson-benchmark · linked in 2 of the same discussions
Mentioned in the same Hacker News threads. That is not proof they are substitutes.
This week on Hacker News
Nov 8–Nov 15 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/15/2026, 2:04:58 PM UTC.
No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.
Mentions over time
HN mentions by year38 dated mentions
Observed mentions: 2015-01-04 18:20:40 UTC to 2025-05-17 19:18:24 UTC.
Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.
View mention counts and date ranges
| Period | Start (UTC) | End (exclusive, UTC) | Mentions | Submissions | Comments |
|---|---|---|---|---|---|
| 2015 | 2015-01-01 00:00:00 UTC | 2016-01-01 00:00:00 UTC | 2 | 2 | 0 |
| 2016 | 2016-01-01 00:00:00 UTC | 2017-01-01 00:00:00 UTC | 4 | 3 | 1 |
| 2017 | 2017-01-01 00:00:00 UTC | 2018-01-01 00:00:00 UTC | 5 | 3 | 2 |
| 2018 | 2018-01-01 00:00:00 UTC | 2019-01-01 00:00:00 UTC | 4 | 1 | 3 |
| 2019 | 2019-01-01 00:00:00 UTC | 2020-01-01 00:00:00 UTC | 4 | 1 | 3 |
| 2020 | 2020-01-01 00:00:00 UTC | 2021-01-01 00:00:00 UTC | 4 | 1 | 3 |
| 2021 | 2021-01-01 00:00:00 UTC | 2022-01-01 00:00:00 UTC | 5 | 1 | 4 |
| 2022 | 2022-01-01 00:00:00 UTC | 2023-01-01 00:00:00 UTC | 3 | 0 | 3 |
| 2023 | 2023-01-01 00:00:00 UTC | 2024-01-01 00:00:00 UTC | 1 | 0 | 1 |
| 2024 | 2024-01-01 00:00:00 UTC | 2025-01-01 00:00:00 UTC | 3 | 1 | 2 |
| 2025 | 2025-01-01 00:00:00 UTC | 2026-01-01 00:00:00 UTC | 3 | 1 | 2 |
What Hacker News says
4 sourcesHere are a couple of expertly-written C++17/C++20 repositories:
https://github.com/hanickadot/compile-time-regular-expressio...
https://github.com/nlohmann/json
If you've not written C++ code before, it can take a while to catch up with the latest developments in C++23. Start with C, and learn these, in approximately the specified order:
1. lvalue references.
2. Constructors, destructors, and inheritance.
3. Annotations such as const and noexcept on members.
4. Simple type templates, and value templates.
5. constexpr, std::move, and rvalue references.
6. Type traits and std::enable_if.
7. Concepts.
Once you learn the core language features, learning the various data structures/algorithms in `std` should just be a matter of looking them up in cppreference, and using them over and over again.
Good luck.
In Ask HN: Good C++ code bases to read?IMO "public" facing APIs should always be easy to use and only require the minimum information from the user necessary. An example of an outstanding public API would be nlohmann's json library for C++[0].
Whether that API is merely a wrapper for an internal API that is more testable (i.e. allows injection, etc.) or whatever is another matter.
[0] https://github.com/nlohmann/json
In Short term usability is not the same as long term usabilityJSON does not preserve insertion order
2 points · Open discussion