Hacker News - Newest: "C++"

Writing Efficient C++ Code (2013)

ibobev — Fri, 25 Sep 2026 20:20:27 +0000

Article URL: https://asawicki.info/articles/writing_efficient_cpp_code.php

Comments URL: https://news.ycombinator.com/item?id=49849409

Points: 120

# Comments: 71

Show HN: A benchmark comparison of C++ vs. Node.js performance

vikky2810 — Fri, 25 Sep 2026 05:25:29 +0000

Article URL: https://vikky2810.github.io/blog/cpp-vs-node/

Comments URL: https://news.ycombinator.com/item?id=49840469

Points: 5

# Comments: 1

Can Java's Adjoint Automatic Differentiation Compete with C++?

petrpravda — Thu, 24 Sep 2026 19:18:32 +0000

Article URL: https://nablatensor.com/blog/xad-matlogica-aadc-monte-carlo-benchmark

Comments URL: https://news.ycombinator.com/item?id=49835576

Points: 4

# Comments: 0

Open Source World of Warcraft Client in C++ and Vulkan Renderer

m0do1 — Wed, 23 Sep 2026 20:18:24 +0000

Article URL: https://github.com/Kelsidavis/WoWee

Comments URL: https://news.ycombinator.com/item?id=49821907

Points: 1

# Comments: 0

How fast is C++23's std:flat_map?

surprisetalk — Wed, 23 Sep 2026 12:20:04 +0000

Article URL: https://lemire.me/blog/2026/09/16/how-fast-is-c23s-stdflat_map/

Comments URL: https://news.ycombinator.com/item?id=49815003

Points: 3

# Comments: 1

Show HN: Open-source Express-like HTTP server in C++

Amsozzer — Tue, 22 Sep 2026 22:20:41 +0000

Hey guys, I made an open-source Express like non blocking HTTP Server library in C++. Starting a new web server is as simple as initiating the app with the desired port (8080 default) and start registering routes.

#include

int main() { HttpServer app(3000);

    app.GET("/users/:id", [](HttpRequest& req, HttpResponse& res) {
        res.status(200).send(nlohmann::json{
            {"id", req.params["id"]},
            {"name", "ada"},
        });
    });

    app.serve([] { std::cout << "listening on :3000\n"; });

}

It supports middleware chaining and since it uses tries for storing routes instead of a flat array like Express, the performance gets better as the application scales up

For example: At 5 Routes PlusWeb is 4.8x faster than express whereas at 10,000 routes it is 253x faster than express

Playground: https://amsozzer.com/projects/plusweb It is available to use on https://github.com/Amsozzer1/PlusWeb

Some more profiling info available on https://github.com/Amsozzer1/PlusWeb/blob/main/PROFILING_REP...

Learn more about my mistakes building PlusWeb and how I fixed them on https://amsozzer.com/writing/i-could-not-understand-express-...

Comments URL: https://news.ycombinator.com/item?id=49809041

Points: 1

# Comments: 0

Type Punning in C and C++

ingve — Tue, 22 Sep 2026 11:29:47 +0000

Article URL: https://blog.pwkf.org/2026/09/21/correct-type-punning-in-c.html

Comments URL: https://news.ycombinator.com/item?id=49799577

Points: 36

# Comments: 23

Show HN: Spatium – any mathematical space, one C++23 library

Vaniello — Tue, 22 Sep 2026 10:53:37 +0000

Article URL: https://github.com/Vaniell0/spatium

Comments URL: https://news.ycombinator.com/item?id=49799228

Points: 1

# Comments: 0

Fastlogging-Rs: High-Performance Logging for Rust, Python, C, C++, Java, Go, C#

brmmm3 — Mon, 21 Sep 2026 19:58:32 +0000

Article URL: https://github.com/brmmm3/fastlogging-rs

Comments URL: https://news.ycombinator.com/item?id=49792528

Points: 2

# Comments: 0

Show HN: FractalBrainOS – self-learning brain in C++17 (no backprop)

06121985 — Mon, 21 Sep 2026 15:09:04 +0000

Article URL: https://github.com/NineNi999neNine/FractalBrainOS

Comments URL: https://news.ycombinator.com/item?id=49788302

Points: 2

# Comments: 0

Geatsc – TypeScript-to-C++ Compiler

arbayi — Sun, 20 Sep 2026 19:20:22 +0000

Article URL: https://github.com/geastack/compiler

Comments URL: https://news.ycombinator.com/item?id=49779069

Points: 3

# Comments: 0

Resident Evil 4 (GameCube) – complete byte-identical decompilation to C/C++

metrofun — Sun, 20 Sep 2026 17:38:27 +0000

Article URL: https://github.com/adonis-singh/re4

Comments URL: https://news.ycombinator.com/item?id=49778022

Points: 140

# Comments: 99

Comparing reflection capabilities of C++, Zig and C3

ManuLinares — Sun, 20 Sep 2026 02:00:31 +0000

Article URL: https://nyr24.github.io/blog/reflection-comparison/

Comments URL: https://news.ycombinator.com/item?id=49771873

Points: 11

# Comments: 7

The C++20's u8/char8_t Backward-Compatibility Fiasco

signa11 — Sat, 19 Sep 2026 05:58:35 +0000

Article URL: https://giodicanio.com/2026/09/11/the-c-plus-plus-20-s-u8-char8_t-fiasco/

Comments URL: https://news.ycombinator.com/item?id=49763761

Points: 3

# Comments: 0

C++26: Trivial infinite loops are no longer undefined behaviour

ibobev — Fri, 18 Sep 2026 13:01:29 +0000

Article URL: https://www.sandordargo.com/blog/2026/09/16/cpp26-trivial-infinite-loops

Comments URL: https://news.ycombinator.com/item?id=49753817

Points: 3

# Comments: 0

The C++20's u8/char8_t Backward-Compatibility Fiasco

jandeboevrie — Fri, 18 Sep 2026 09:21:39 +0000

Article URL: https://giodicanio.com/2026/09/11/the-c-plus-plus-20-s-u8-char8_t-fiasco/

Comments URL: https://news.ycombinator.com/item?id=49751932

Points: 4

# Comments: 0

Separating Compilation from Attestation. C++ memory safety without disruption

marksun130 — Thu, 17 Sep 2026 21:56:37 +0000

Article URL: https://gist.github.com/mksunny1/fe88dc882278cb76181e7b2b3eb1d5ce

Comments URL: https://news.ycombinator.com/item?id=49747167

Points: 2

# Comments: 0

C++26: Trivial infinite loops are no longer undefined behaviour

ibobev — Thu, 17 Sep 2026 20:52:33 +0000

Article URL: https://www.sandordargo.com/blog/2026/09/16/cpp26-trivial-infinite-loops

Comments URL: https://news.ycombinator.com/item?id=49746406

Points: 173

# Comments: 289

How fast is C++23's std:flat_map?

ibobev — Thu, 17 Sep 2026 20:40:34 +0000

Article URL: https://lemire.me/blog/2026/09/16/how-fast-is-c23s-stdflat_map/

Comments URL: https://news.ycombinator.com/item?id=49746231

Points: 2

# Comments: 0

Show HN: I wrote a custom assembler for CHIP-8 in C++

tack1234 — Thu, 17 Sep 2026 17:47:40 +0000

I'm writing a custom assembler for CHIP-8 and just finished adding support for the DB/.byte directive so I can embed sprites in the ROM and finally get something drawn on the screen. It SHOULD support all OG CHIP-8 instructions, but still a ton of rough edges that I'm ironing out.

This is my first ever C++ project, just like the CHIP-8 emulator was my first ever C (and emudev) project. It's so satisfying to write assembly and have your program spit out a ROM that actually runs in the emulator you wrote.

All code is written by me (a lot of it livestreaming) as evident by the quality, no AI.

Comments URL: https://news.ycombinator.com/item?id=49744174

Points: 28

# Comments: 8