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dumah

137 karma · joined August 24, 2023

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dumah··on Parsing Protobuf like never before
Fantastic post.

Please do one on your analysis and optimization workflow and tooling!

dumah··on I'm Switching to Python and Actually Liking It
I’m not sure why you’re comparing __new__ to constructors in other languages.

Ruby has the same thing but it’s called ‘new’.

Implementing the type of customization (idiomatically) that __new__ provides in Kotlin and JS isn’t any cleaner.

dumah··on Dict Unpacking in Python
That’s not “the normal way”, it’s just the case when the LHS is immutable.

This behavior is congruent to C++ and it’s documented and idiomatic.

It’d be weird if the in-place operator deeply copied the LHS, and problematic for a garbage-collected language in high throughput applications.

dumah··on Grok: Searching X for "From:Elonmusk (Israel or Palestine or Hamas or Gaza)"
No, he finally said something that cost Murdoch money instead of making him money.
dumah··on Some of Iran's Enriched Uranium Survived Attacks, Israeli Official Says
Of course every bit of it survived. U-235 has a half life of over 700m years.

Whether it’s yellowcake or UF6, it was merely dispersed within the facilities and has not been mobilized. Recovery would consist of chemical processing of debris using common chemicals.

Fissile materials like enriched uranium and plutonium can only be neutralized by secure disposal or (nuclear) burn up.

When the USSR fell, US nuclear weapons specialists assisted former Soviet republics with securing the tunnels in which many weapon cores were vaporized by subcritical weapon testing, where a weapon core is imploded in such a manner that reactivity is limited below the level needed for low or high order nuclear detonation.

dumah··on Grok 4
You can embed these requirements into conventions that systematically constrain the solutions you request from the LLM.

I’ve requested a solution from Sonnet that included multiple iterative reviews to validate the solution and it did successfully detect errors in the first round and fix them.

You really should try this stuff for yourself - today!

You are a highly experienced engineer and ideally positioned to benefit from the technology.

dumah··on Starcloud can’t put a data centre in space at $8.2M in one Starship
Radiation at desirable operating temperatures is a relatively weak means of heat transport, hence spreaders.

Only a big power-efficient chip like M2 Ultra could survive if it could _only_ radiate from one side of the wafer into CMB.

The rest of the silicon will become molten at 100% TDP: H100, Xeon, Core, EPYC, Ryzen.

Most would be over 400C at 1% TDP.

Conduction and convection are linear or close and are effective at desirable temperatures, whereas thermal radiation is quartic and highly convex.

dumah··on Starcloud can’t put a data centre in space at $8.2M in one Starship
Geostationary orbiters operate there during the day but this concept would position systems 100x closer to earth and well inside the protective envelope.
dumah··on Astronomers have discovered a mysterious object flashing signals from deep space
This is called the pulsar’s magnetic inclination and it’s often quite far from 0, all the way to nearly orthogonal.

Yes but this is a dynamic process that produces more correlated stars as the galaxy ages.

Astronomers routinely measure such parameters using models to provide confidence bounds for their estimates.

https://arxiv.org/pdf/2404.13857

dumah··on Jepsen: TigerBeetle 0.16.11
OLTP (Online Transaction Processing) is a database paradigm optimized for handling high volumes of short, fast transactions in real-time, typically supporting day-to-day operational activities like order processing, inventory updates, and customer account management where data integrity and quick response times are critical.

Another paradigm is OLAP, in which aggregation of large datasets is the principal concern.

dumah··on Why are 2025/05/28 and 2025-05-28 different days in JavaScript?
ISO 8601-1:2019/Amd 1:2022

Midnight at the start of the day: 00:00:00

Midnight at the end of the day: 24:00:00

dumah··on Comparing Docusaurus and Starlight and why we made the switch
It's wild that you are offering your views on software documentation while you think checking git blame is a substitute for retaining documentation, and you don't understand why users would want documentation for old versions.
dumah··on LPython: Novel, Fast, Retargetable Python Compiler (2023)
PEP-723 solves this nicely.

https://peps.python.org/pep-0723/

https://news.ycombinator.com/item?id=43500124

dumah··on I don't like NumPy
This is because of the dispatch semantics for dunder operator methods, which the Python docs are horrible at communicating.

The types returned as you described are exactly what I’d expect and idiomatic for Python. This isn’t a problem with numpy.

dumah··on Zig, the Ideal C Replacement Or?
From my perspective, the adoption for Linux kernel modules, prevalence in the ecosystem of data science my industry relies on, and the explosion of great rust CLI tools satisfies this foundation.

Native rust extensions to provide canonical high quality interfaces for other languages, like Valkey Glide are another example.

Adding on the fact that rust is the fastest or nearly the fastest growing language in terms of users, and I can’t agree with the view that it is not moving in that direction.

dumah··on Stainless steel strengthened: Twisting creates submicron 'anti-crash wall'
The regularity of this microstructure is incredible, even in comparison to additively manufactured steels.

https://scx2.b-cdn.net/gfx/news/2025/creating-an-anti-crash....

dumah··on Inheriting is becoming nearly as important as working
Framing this as a personal income tax concern is a bit off the mark.

https://en.m.wikipedia.org/wiki/Base_erosion_and_profit_shif...

dumah··on Inheriting is becoming nearly as important as working
What if I told you that the largest and most liquid market for assets in the United States wasn’t covered by any transaction tax?
dumah··on Bank CEO: Retract your debanking piece? Me: No
The law has recently changed quite a bit with respect to the very nature of a smart contract (Tornado).

I don’t think they’re very specific.

The lack of specificity was such that the government is now purporting to end “regulation by enforcement”.

dumah··on The U.S. needs a shipbuilding revolution
The primary purpose of guided missile destroyers is missile defense.

Modern destroyers are capable of staying on station almost indefinitely and defending themselves and allied vessels from nearly any existing airborne threat.

Such a platform needs to be on station and close to assets at risk so it can interdict. You would need to orbit these platforms continuously to provide protection, and would need more than one of them at all times.

Missile defense has been one of the biggest topics in international security over the last year, and is Trump's biggest defense priority.

This is not a good sales pitch.

dumah··on The young, inexperienced engineers aiding DOGE
That’s fair.
dumah··on The young, inexperienced engineers aiding DOGE
Lon Horiuchi couldn't be convicted because the state's prosecutor dropped it.
dumah··on Show HN: Uscope, a new Linux debugger written from scratch
There are almost 4000 open issues on gdb reported more than five years ago.

In this conversation are reports of an annoying bug that requires a user patch gdb and it's existed for almost twenty years.

It was years before anyone was even assigned because of a bug in their bug tracking system, and they haven't addressed any further comments over the decades.

dumah··on OpenAI says it has evidence DeepSeek used its model to train competitor
my_ridiculous_list = ["Ilya Sutskever"]
dumah··on A better build system for OCaml
Java https://github.com/openjdk/jdk/blob/master/Makefile

Rust https://github.com/rust-lang/rust/blob/master/tests/run-make...

Go https://github.com/golang/go/blob/master/src/runtime/Makefil...

NodeJS https://github.com/nodejs/node/blob/main/Makefile

OCaml https://github.com/ocaml/ocaml/blob/trunk/Makefile

Python https://github.com/python/cpython/blob/main/Makefile.pre.in

Haskell https://github.com/ghc/ghc/blob/master/ghc/Makefile

R https://github.com/wch/r-source/blob/trunk/Makefile.in

CLR https://github.com/mono/mono/blob/main/Makefile.am

Ruby https://github.com/ruby/ruby/blob/master/enc/Makefile.in

dumah··on Commercial jet collides with Black Hawk helicopter near Reagan airport
Missile approach warning systems don’t need radar. Most use IR sensing and lasers.

Even in radar-based MAW systems, they are not multipurpose and do not detect aircraft by design.

dumah··on Commercial jet collides with Black Hawk helicopter near Reagan airport
The air-to-air radar is not necessarily peanuts compared to the helicopter. A recent sale of blackhawks to Greece was priced at 1.95B for 35 helos. A past sale of 36 Apache Longbow radars and support to Korea was priced at 3.6B.

A helo is a sitting duck for a fighter so what would it do anyways. AEW will tell the helicopter about a fighter and vector them to safety. An active military radar will only be lit when necessary.

I do agree that an iPad with flight radar should have been able to help avoid this incident, much less the engineered solution that is warranted in a combat aircraft.

dumah··on Younger cannabis users have reduced brain function, finds largest study yet
This is demeaning, uncivil, and largely baseless.
dumah··on No one is disrupting banks – at least not the big ones
There’s at most a zero floor value on holdings of government debt, corporate equities, bank holdings, and any asset held by a custodian.

The floor value of physical commodities with significant storage costs is negative.

The market is aware of these possibilities and these risks are generally recognized as being embedded in asset prices as premiums.

dumah··on Operator research preview
Being restricted from doing crimes by a vendor of commercial software isn’t a cyberpunk dystopia. Buy or download something else.

It’s a typical restriction of software terms of service to prohibit use outside of applicable laws and regulations.

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