Hacker News: jjmarr

New comment by jjmarr in "Payments Canada announces launch of Canada's Real-Time Rail (RTR) payment system"

jjmarr — Mon, 09 Nov 2026 17:26:12 +0000

Wealthsimple has 170 billion in assets under administration, while BMO, the smallest major bank, only has 310 billion. Considering WS is 100% retail, it's arguably a major financial institution at this point (though legally not a bank).

New comment by jjmarr in "Making any integer with four 2s (2025)"

jjmarr — Sun, 08 Nov 2026 04:17:35 +0000

You can use `sin(arctan())` as the repeatable operator instead of sqrt(). Then "unwrap" by applying ^-2 - (2^-2)

3=(sin(arctan(sin(arctan(sin(arctan(2))))))^−2 − (2)^−2

New comment by jjmarr in "C++26 Disapproved"

jjmarr — Wed, 04 Nov 2026 06:06:06 +0000

There is no standard build/module system or way of dependency management. Unfortunately, this is because there's no standard compiler with standardized flags so C++ would also have to standardize compiler behaviour too.

Large FAANGs that would be incentivized to change it don't care because they have their own in-house C++ build systems like bazel (Google) or buck2 (Meta) that are far faster than cmake (distributed compilation and caching) but require huge teams to maintain. Unfortunately, this distributed compilation and caching layer is something that many other languages don't have since their build systems are made for single devs building locally.

Also the dependencies can be added in a myriad of ways. Your build system can download them, your meta-build dependency manager can find them (Conan), your Linux distro can provide them (system libraries), or maybe you just download an object file from a website + some headers and are told to figure it out yourself (many commercial packages like cuda or steam).

New comment by jjmarr in "Work Requirements for Trick-or-Treaters"

jjmarr — Sun, 01 Nov 2026 06:27:26 +0000

I love the AI generated parodies because they show how formulaic some essays are.

New comment by jjmarr in "US tech stocks see sharp falls over AI cost fears"

jjmarr — Fri, 30 Oct 2026 18:19:42 +0000

I don't understand why the kernel needs to be linked to the distro. I use Gentoo and kernel upgrades are orthogonal to my userspace because of Linus' "we don't break userspace" policy. I do not even need to recompile packages when I change my kernel.

If EAC signs a custom kernel I will just boot into that one when I want to play video games. Unlike dual-booting Windows it won't delete my Linux boot entries and I can use all my applications.

New comment by jjmarr in "Seychelles has 58,396 IPv4 addresses per 1000 people, the most per capita"

jjmarr — Fri, 30 Oct 2026 05:16:45 +0000

The next two include the Vatican City with 21,645 and the USA with 4,691. Seychelles in absolute terms has a larger allocation than all but 4 other African countries, so I was surprised not to see it on the IPv4 map.

Why is this?

Seychelles has 58,396 IPv4 addresses per 1000 people, the most per capita

jjmarr — Fri, 30 Oct 2026 05:16:45 +0000

Article URL: https://en.wikipedia.org/wiki/List_of_countries_by_IPv4_address_allocation

Comments URL: https://news.ycombinator.com/item?id=50300098

Points: 2

# Comments: 1

New comment by jjmarr in "Chained PHP2Shell exploit roots 25 servers, including US Government servers"

jjmarr — Fri, 30 Oct 2026 03:18:32 +0000

I'm on Gentoo and when I compile my kernel, by default, almost nothing is enabled.

On other distros they throw in the kitchen sink because it is easier than making an endless amount of them customized to every system.

New comment by jjmarr in "UTS #39: Unicode Security Mechanisms"

jjmarr — Mon, 26 Oct 2026 01:42:05 +0000

Banning the "limited use" category by default in the "General Security Profile" is interesting given it overrepresents indigenous scripts.

For example, Canadian Aboriginal Syllabics is the writing system of Inuktitut, the primary language of the Canadian territory of Nunavut spoken by 63.1% of the population. It seems like they're being disenfranchised by this proposal.

New comment by jjmarr in "How Far Will AI Assistants Go for a Refund They Can't Get?"

jjmarr — Mon, 19 Oct 2026 15:35:05 +0000

The AI isn't me, though. If it goes overboard I can tell people it went rogue and get away with it.

New comment by jjmarr in "Waymo in Toronto"

jjmarr — Sun, 18 Oct 2026 01:47:22 +0000

The whole highway from my hotel to downtown Austin was new.

New comment by jjmarr in "Waymo in Toronto"

jjmarr — Sat, 17 Oct 2026 04:29:59 +0000

https://maps.app.goo.gl/ryE7MoAhZEfH1t3T7?g_st=ac

Here's the interchange near my hotel that's not on satellite but is on Google Maps. Unfortunately satellite coverage on Google Maps is older than Google Maps is, but you can see on streetview in April 2025 it mostly wasn't there and in May 2026 it mostly was. I think I visited a month or so after which is why it was so recent.

New comment by jjmarr in "Waymo in Toronto"

jjmarr — Fri, 16 Oct 2026 17:44:22 +0000

I went to Austin a few months ago and half the interchanges weren't on Google Maps because they were built so recently. In the week I was there I think they finished building a new one near my hotel.

I wonder how reliant self-driving cars are on unchanging road infrastructure.

New comment by jjmarr in "Overdose Offsets: Why Every Bag of Fentanyl I Sell Is Net Life-Positive"

jjmarr — Thu, 15 Oct 2026 02:10:43 +0000

The top comment discussing how price inelasticity means it is the drug users who are donating the money and deserve the moral credit made me appreciate my economics minor.

New comment by jjmarr in "Triple-A Minesweeper"

jjmarr — Fri, 09 Oct 2026 19:33:47 +0000

The ending needed to force you to click on a mine so you die in the cutscene lmao.

New comment by jjmarr in "Tell HN: I've been paying for a rural Tanzanian's education for 10 years"

jjmarr — Thu, 08 Oct 2026 23:18:06 +0000

Thanks for reminding me of Kiva. I used to be big on it when I was younger. Just sent US$50 to a Liberian to fund her clothing business, hope it works out.

New comment by jjmarr in "Anthropic reported diary entry to police, woman faces felony charge"

jjmarr — Tue, 06 Oct 2026 02:44:04 +0000

They run anti-abuse filters with ZDR but to my knowledge they don't have the specific prompts that triggered them. I have never received any emails from OpenRouter or otherwise.

New comment by jjmarr in "Anthropic reported diary entry to police, woman faces felony charge"

jjmarr — Mon, 05 Oct 2026 17:48:00 +0000

This is why I use ZDR and API access.

New comment by jjmarr in "How Singapore's government-run dating service works"

jjmarr — Sat, 03 Oct 2026 23:00:15 +0000

That's because she has other options.

There are far more people unhappily married with 4/10 attraction for each other because it is better being alone.

That's why it needs to be a stable matching instead of "high compatibility matching".

New comment by jjmarr in "How Singapore's government-run dating service works"

jjmarr — Fri, 02 Oct 2026 05:35:54 +0000

> the preference matrix is based on identical mutual compatibility scores

Is that modeling the problem correctly? It seems pretty rare for two partners to have equal amounts of love for each other.