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Dev with 5 of experience switched to Rails, what should I be careful about?

1•vampiregrey•2m ago•0 comments

AlphaFace: High Fidelity and Real-Time Face Swapper Robust to Facial Pose

https://arxiv.org/abs/2601.16429
1•PaulHoule•3m ago•0 comments

Scientists discover “levitating” time crystals that you can hold in your hand

https://www.nyu.edu/about/news-publications/news/2026/february/scientists-discover--levitating--t...
1•hhs•5m ago•0 comments

Rammstein – Deutschland (C64 Cover, Real SID, 8-bit – 2019) [video]

https://www.youtube.com/watch?v=3VReIuv1GFo
1•erickhill•5m ago•0 comments

Tell HN: Yet Another Round of Zendesk Spam

1•Philpax•5m ago•0 comments

Postgres Message Queue (PGMQ)

https://github.com/pgmq/pgmq
1•Lwrless•9m ago•0 comments

Show HN: Django-rclone: Database and media backups for Django, powered by rclone

https://github.com/kjnez/django-rclone
1•cui•12m ago•1 comments

NY lawmakers proposed statewide data center moratorium

https://www.niagara-gazette.com/news/local_news/ny-lawmakers-proposed-statewide-data-center-morat...
1•geox•14m ago•0 comments

OpenClaw AI chatbots are running amok – these scientists are listening in

https://www.nature.com/articles/d41586-026-00370-w
2•EA-3167•14m ago•0 comments

Show HN: AI agent forgets user preferences every session. This fixes it

https://www.pref0.com/
5•fliellerjulian•16m ago•0 comments

Introduce the Vouch/Denouncement Contribution Model

https://github.com/ghostty-org/ghostty/pull/10559
2•DustinEchoes•18m ago•0 comments

Show HN: SSHcode – Always-On Claude Code/OpenCode over Tailscale and Hetzner

https://github.com/sultanvaliyev/sshcode
1•sultanvaliyev•18m ago•0 comments

Microsoft appointed a quality czar. He has no direct reports and no budget

https://jpcaparas.medium.com/microsoft-appointed-a-quality-czar-he-has-no-direct-reports-and-no-b...
2•RickJWagner•20m ago•0 comments

Multi-agent coordination on Claude Code: 8 production pain points and patterns

https://gist.github.com/sigalovskinick/6cc1cef061f76b7edd198e0ebc863397
1•nikolasi•20m ago•0 comments

Washington Post CEO Will Lewis Steps Down After Stormy Tenure

https://www.nytimes.com/2026/02/07/technology/washington-post-will-lewis.html
7•jbegley•21m ago•1 comments

DevXT – Building the Future with AI That Acts

https://devxt.com
2•superpecmuscles•22m ago•4 comments

A Minimal OpenClaw Built with the OpenCode SDK

https://github.com/CefBoud/MonClaw
1•cefboud•22m ago•0 comments

The silent death of Good Code

https://amit.prasad.me/blog/rip-good-code
3•amitprasad•22m ago•0 comments

The Internal Negotiation You Have When Your Heart Rate Gets Uncomfortable

https://www.vo2maxpro.com/blog/internal-negotiation-heart-rate
1•GoodluckH•24m ago•0 comments

Show HN: Glance – Fast CSV inspection for the terminal (SIMD-accelerated)

https://github.com/AveryClapp/glance
2•AveryClapp•25m ago•0 comments

Busy for the Next Fifty to Sixty Bud

https://pestlemortar.substack.com/p/busy-for-the-next-fifty-to-sixty-had-all-my-money-in-bitcoin-...
1•mithradiumn•26m ago•0 comments

Imperative

https://pestlemortar.substack.com/p/imperative
1•mithradiumn•27m ago•0 comments

Show HN: I decomposed 87 tasks to find where AI agents structurally collapse

https://github.com/XxCotHGxX/Instruction_Entropy
2•XxCotHGxX•30m ago•1 comments

I went back to Linux and it was a mistake

https://www.theverge.com/report/875077/linux-was-a-mistake
3•timpera•32m ago•1 comments

Octrafic – open-source AI-assisted API testing from the CLI

https://github.com/Octrafic/octrafic-cli
1•mbadyl•33m ago•1 comments

US Accuses China of Secret Nuclear Testing

https://www.reuters.com/world/china/trump-has-been-clear-wanting-new-nuclear-arms-control-treaty-...
3•jandrewrogers•34m ago•2 comments

Peacock. A New Programming Language

2•hashhooshy•38m ago•1 comments

A postcard arrived: 'If you're reading this I'm dead, and I really liked you'

https://www.washingtonpost.com/lifestyle/2026/02/07/postcard-death-teacher-glickman/
4•bookofjoe•40m ago•1 comments

What to know about the software selloff

https://www.morningstar.com/markets/what-know-about-software-stock-selloff
2•RickJWagner•43m ago•0 comments

Show HN: Syntux – generative UI for websites, not agents

https://www.getsyntux.com/
3•Goose78•44m ago•0 comments
Open in hackernews

Translating Cython to Mojo, a first attempt

https://fnands.com/blog/2025/sklearn-mojo-dbscan-inner/
87•fnands•4mo ago

Comments

adsharma•4mo ago
A more interesting path is to keep dbscan_inner in pure python with type annotations and then use

  py2many --mojo=1 dbscan_inner.py
to translate.
baobun•4mo ago
Somehow just trying to navigate to this website makes my browser crash.

Firefox on Android with NoScript.

VoidWhisperer•4mo ago
Something with Noscript is causing it. I was able to load it fine, then installed noscript and it suddenly crashed
fnands•4mo ago
Mhh, any idea what I could do? It's my website.

I just use Quarto to create a static site, but I am also very clueless about web stuff.

hyperbovine•4mo ago
In my niche corner of scientific computing it feels like Cython has largely been replaced by Numba and CFFI, or just Julia. Last I checked it still needed setup.py which is a bit of a deal breaker in 2025.
almostgotcaught•4mo ago
> Last I checked it still needed setup.py which is a bit of a deal breaker in 2025.

lolwut

westurner•4mo ago
/? cython pyproject.toml: https://www.google.com/search?q=cython+pyproject.toml

From "Building cython extensions using only pyproject.toml (no setup.py)" https://github.com/pypa/setuptools/discussions/4154#discussi... :

  [build-system]
  requires = ["setuptools", "cython"]

  [tool.setuptools]
  ext-modules = [
    {name = "example", sources = ["example.pyx"]} # You can also specify all the usual options like language or include_dirs 
]
physicsguy•4mo ago
Pybind11 seems more popular in my area now. I still like Cython though in terms of the ease of wrapping anything in a Python-y interface.
maleldil•4mo ago
Obligatory Rust + PyO3/Maturin plug. Very ergonomic and easy to use.
physicsguy•4mo ago
That's true but I still don't see that so much because the core libraries are not as mature and often they're just thin wrappers around the C/C++/Fortran API without examples. Just as an example, I'd count this SUNDAILS library as like that: https://docs.rs/sundials/0.3.2/sundials/

Nothing wrong with that as a starting point of course, but it's easier just to compile it as a dependency and look at the core documentation if you're familiar with C++; you'll need to be reading the C++ examples anyway to write Rust code with it.

pjmlp•4mo ago
And it will get even better with reflection, there are already a few talks on the matter, generating Python bindings with C++26 reflection.
maleldil•4mo ago
Sorry, I can't find a relationship between Sundials and PyO3/Maturin. Am I missing something?
physicsguy•4mo ago
What I mean is that (at least in my experience) people are not so commonly writing serious numeric applications in Rust as Python extensions because the numeric libraries on which you'd typically write in a compiled language are not as well developed and are in themselves often thin wrappers over C/C++ code at the moment. When you write an extension library you typically want all the 'slow' stuff to be done in a layer below the interpreted language for performance reasons.

So if you wanted to write a Python Physics library that included, say, time integration with an implicit solver like those SUNDIALS provides (and SUNDIALS is like the gold standard in this area), you have less well used options for the time integration part if you write the extension in Rust as if you do in C/C++. Or you're using the same library anyway.

westurner•4mo ago
It looks like Narwhals; "Narwhals and scikit-Lego came together to achieve dataframe-agnosticism" https://news.ycombinator.com/item?id=40950813 :

> Narwhals: https://narwhals-dev.github.io/narwhals/ :

>> Extremely lightweight compatibility layer between [pandas, Polars, cuDF, Modin]

> Lancedb/lance works with [Pandas, DuckDB, Polars, Pyarrow,]; https://github.com/lancedb/lance

SymPy has Solvers for ODEs and PDEs and other libraries do convex optimization. SymPy also has lambdify to compile from a relatively slow symbolic expression tree to faster 'vectorized' functions

From https://news.ycombinator.com/item?id=40683777 re: warp :

> sympy.utilities.lambdify.lambdify() https://github.com/sympy/sympy/blob/master/sympy/utilities/l... :

>>> """Convert a SymPy expression into a function that allows for fast numeric evaluation""" [with e.g. the CPython math module, mpmath, NumPy, SciPy, CuPy, JAX, TensorFlow, PyTorch (*), SymPy, numexpr, but not yet cmath]

physicsguy•4mo ago
I’m perfectly familiar with SymPy and it’s great but it doesn’t have methods comparable in performance in stiff PDEs to CVODE, and it’s not parallelised either. CVODES offers sensitivity analysis, ARKODE offers multi rate integrators for systems where the ODE can be decomposed into slow and fast rates, etc. etc. - it’s a much more sophisticated and specialist library.
westurner•3mo ago
CVODE,: https://github.com/ufz/cvode

scikits.odes supports CVODE: scikits.odes.sundials.cvode: https://bmcage.github.io/odes/master/api/compat.html#module-....

sckits.odes docs > Choosing a Solver: https://scikits-odes.readthedocs.io/en/latest/solvers.html

scipy.integrate.solve_ivp has Radau, BDF, and LSODA for stiff ODEs, in Python: https://docs.scipy.org/doc/scipy/reference/generated/scipy.i...

If you add Arrow RecordBatch or Table output to CVODE with arrow-cpp, e.g. Dask can zero-copy buffers to Python (pyarrow, pandas.DataFrame(dtype_backend=arrow), or narwhals) when it needs to gather / fan in at a computational barrier in a process-parallel workflow.

Is sklearn-deap useful with scikits.odes and sundials (and dask or not)?

yosefk•4mo ago
extern "C" functions + ctypes are a personal favorite - it's the least "type-rich" approach by far, and I prefer poverty to this sort of riches
hyperbovine•4mo ago
Thanks, but experimental support based off a Github comment is not what I'm looking for when I distribute software.
westurner•4mo ago
Persons who need pyproject.toml functionality could consider contributing tests so that the free functionality might be considered adequate for their purposes.
Certhas•4mo ago
I haven't kept track of numba in recent years. But there is a clear path to translate more and more scikit-learn to mojo, bypassing the python interpreter entirely. And then things become much more composable in a way that numba can't be.

We are heavily leaning on Julia, and to my mind Mojo is a major threat to the long term development of the Julia community. If people dissatisfied with Python+C(++)-Silos end up writing Mojo instead of Julia it will become even harder to grow the ecosystem and community.

That said, for now Julia has a number of big strengths for scientific work that don't seem to be in the focus of the Mojo devs...

fnands•4mo ago
Yeah, I went to JuliaCon last year, and it was clear that Julia really seems to have found it's niche in the scientific computing world.

I like the language, but as I do ML, Python is really the only game in town, and Mojo is looking promising.

Archit3ch•4mo ago
> Mojo is a major threat to the long term development of the Julia community

Mojo has 3 disadvantages compared to Julia:

1) The core team is focused on the Linux+servers+AI combination, because that's where the money is.

2) Less composability due to the lack of multiple dispatch.

3) The license.

RossBencina•4mo ago
Very interesting. I'm currently trading off whether to use Mojo or C++/pybind to accelerate simulations that combine matrix operations with fine-grained scalar calculations. I only recently learned that pybind + cppimport offers the integrated compile-on-import experience available in Mojo.
melodyogonna•4mo ago
Mojo makes SIMD and GPU programming more ergonomic than what you would obtain from C++, I imagine this should factor into your decision process. The language is just less mature overall.
fnands•4mo ago
I would say it depends on how stable you need the code to be.

If it's something you need to put in production soon, C++/pybind might be the way to go, but if it's just a side-project, Mojo could work.

pjmlp•4mo ago
Depends on how much you care to work on Windows, if not at all, then Mojo can be considered.
pjmlp•4mo ago
> I think moving a lot of scikit-learn’s more computationally intensive code to Mojo could be an interesting project.

Only if you want to lose access to Windows users, as it is a low priority for Mojo development.

fnands•4mo ago
Fair, but it would also be a multi-year project, and I wouldn't take it seriously until Mojo reaches a 1.0
pjmlp•4mo ago
As per current roadmap that seems something around 2027, assuming everything goes as planned.
fnands•4mo ago
That's not too bad right, seeing as 2026 is getting pretty close?
pjmlp•4mo ago
Enough time for landscape changes, though.
jononor•4mo ago
Mojo is not open source, so how can it be realistic to use it in scikit-learn?

We spent decades getting out of the clutches of Mathworks, Microsoft, etc. Why are people eager to go back that way?

fnands•4mo ago
They want to open-source the language, and call me naive, but I do believe that they will.

The licence is a bit weird to me though. I do get it for their main product, Max, but it is a bit of a weird one for a language.