daw_json_link
Better Enums
daw_json_link | Better Enums | |
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21 | 5 | |
433 | 1,596 | |
- | - | |
8.4 | 3.7 | |
17 days ago | 3 months ago | |
C++ | C++ | |
Boost Software License 1.0 | BSD 2-clause "Simplified" License |
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daw_json_link
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Has Boost lost its charm?
They might have good luck with https://github.com/beached/daw_json_link it has support for stuff like JSON lines and alike plus other ways that only use as much ram as their underlying data structures do as it parses directly to the user DS. Plus it has an iterator/range interface for things like arrays if needed.
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New, fastest JSON library for C++20
We will add more benchmarks in the future, but for now you can see the comparison of daw_json_link with rapidjson. glaze is faster than daw_json_link, which is over twice as fast as rapidjson.
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What are some cool modern libraries you enjoy using?
I am biased, but prefer https://github.com/beached/daw_json_link Super fast and you work with your native data structures without the overhead of DOM parsing/lookup
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How to deserialise json into a C++ struct?
You can also look into https://github.com/beached/daw_json_link which claims to support nullable values in the readme.
- Show HN: DAW JSON Link
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JSON for Modern C++ 3.11.0
The library I author does this. https://github.com/beached/daw_json_link . It's fast, GB/s too, and provides the mapping mechanism, iteration types, json lines support, event based parser, along with a non-owning json_value for when the mappings don't fit right or if one is querying. Pretty much everything but an owning JSON value as it's not something I've ever needed more than temporarily and brings a lot of complexity that is solved by using the actual C++ data structures one is eventually parsing into anyways.
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DAW JSON Link v3, a JSON serialization/deserialization library, is released
So DAW JSON Link does have a DOM view, however it does not have a owning view. The json_value(even supports JSON Path in a limited form) type and json_raw mappings can help here. But there is no hard line between parsing view the json_value and the mappings to concrete data structures. One can mix and match.
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Parsing JSON faster with Intel AVX-512
Is this the repo? Never saw it linked in our convo, and I’d like to give it a whirl.
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Is there something like GSON available in C++?
daw_json_link is what you're looking for : https://github.com/beached/daw_json_link
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Deserializing JSON Fast
Check out https://github.com/beached/daw_json_link , it provides a non-typeerased way to parse JSON straight into user-defined data structures.
Better Enums
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How to convert an enum to string in C++
I really like better_enums instead of magic_enums. There’s no limit on enum size with it: http://aantron.github.io/better-enums/
It was heavily used at a former employer of mine, so definitely a solid production-ready solution.
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What C++ library do you wish existed but hasn’t been created yet?
IIRC I then switched to another library doing the same stuff: https://github.com/aantron/better-enums It is not as magical, as it uses a special macro to define the enum, using dedicated syntax. So it only works for enums you yourself define. However, it did work a lot better for me with enums with huge values.
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Behind the magic of magic_enum
I can't keep up! First we have better enum, then some guy at a conference says we have to use wise enum instead, and now you speak of magic enum!
- What are some cool modern libraries you enjoy using?
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let's all be chads
If you need a laugh today, look at Better Enums library for C++. If you thought moving from C to C++ would let you leave macros behind, think again! Enums in C++ still suck (a bit less than in C though), so someone built a library to help with that. And it's built on macros. So you can only have 64 entries per enum. And the library's code is barely readable.
What are some alternatives?
json_struct - json_struct is a single header only C++ library for parsing JSON directly to C++ structs and vice versa
C++ Format - A modern formatting library
simdjson - Parsing gigabytes of JSON per second : used by Facebook/Meta Velox, the Node.js runtime, ClickHouse, WatermelonDB, Apache Doris, Milvus, StarRocks
stb - stb single-file public domain libraries for C/C++
json - JSON for Modern C++
Klib - A standalone and lightweight C library
Magic Enum C++ - Static reflection for enums (to string, from string, iteration) for modern C++, work with any enum type without any macro or boilerplate code
American Fuzzy Lop - american fuzzy lop - a security-oriented fuzzer
RapidJSON - A fast JSON parser/generator for C++ with both SAX/DOM style API
Cppcheck - static analysis of C/C++ code
Crow - A Fast and Easy to use microframework for the web.
constexpr-8cc - Compile-time C Compiler implemented as C++14 constant expressions