HNHacker News
TopNewBestAskShowJobs

jrrv

86 karma · joined November 19, 2018

submissionscomments
jrrv··on The Death of Shame Is Tearing Us Apart
45% of this article is about the NBA
jrrv··on Don't let anyone take away your big box of cables
> Palm III dock, Linksys WRT54G, or Sony PSP charger

These are all >20 years old

jrrv··on Zohran and the Short Link
Socialism is when the government does stuff, it would seem.
jrrv··on Python's pre-declared constants are kinda weird
> [1, 2, 3] + [4, 5, 6] == "1, 2, 34, 5, 6"

Well, `+` is a string operator. There's no infix array concatenation operator, so makes sense.

> parseInt(0.000001) == 0 > parseInt(0.0000001) == 1

Never knew about this one! Quite funny actually and I'm curious why that happens. I suppose because `0.0000001` is represented as an exponent rather than a decimal? Although I haven't seen `parseInt` used since 2015, you should use `Number`.

> "" + 5 == "5" > "" - 5 = -5

iirc

`+` operator: - If LHS is a string, concatenate - Otherwise, cast to Number and perform arithmetic.

`-` operator: - Perform arithmetic.

All of these are explainable, and never catch anybody competent out in practice. And, since TypeScript is the norm in a lot of places now, it's never an issue.

jrrv··on Python's pre-declared constants are kinda weird
I clicked on half a dozen of these at random and none of them are weird.

For example, why would you expect `Boolean("false")` to equal `false`? It's a string, and bears no relation to the Boolean type. [0]

[0] https://wtfjs.com/wtfs/2014-10-07-true-equals-false

jrrv··on Starbase, LA
> many of whom will be from Grimes

That required a double take

jrrv··on New Mac Studio with M5 Max and M5 Ultra
Or, if you're like me then "if you work from anywhere in your house, then you're never at work."
jrrv··on The hardest working font in Manhattan (2025)
Funny, I'd actually noticed that this font was knocking around in various places, particularly in American media, without giving it too much conscious thought. Although I had decided that I liked it. It's very 60s, mechanical, tactile, and almost cute in its ignorance of typography rules that would come to be unquestionable. It's nice to put a name to the font.
jrrv··on The hardest working font in Manhattan (2025)
I think my ad blocker was the problem. Disabling it didn't turn it into the fastest website in the world—the images loaded in about 15 seconds—but that was a lot better than the never loading I was getting before disabling it.
jrrv··on Pareto Front
Given this in the TFA

> a Pareto front represents the set of solutions where no solution outperforms any other solution in the set at every objective

I do not believe you are correct when you say

> something that better, cheaper, and faster, or even pretty close to the best on two of those and clearly better on the other. It's a Pareto point.

Since that would outperform on every objective

GP's point that it's prioritisation does not seem incorrect to me. Prioritisation involves considering trade-offs of various approaches and deciding which aspects & attributes to optimise for, at the expense of others.

jrrv··on Situational Awareness Down 67% in July in AI Stock Rout
Literally the first line
jrrv··on Show HN: Follow London Trains in 3D
The planes were a surprise
jrrv··on Show HN: Turn native language audio into flashcards and shadowing practice
No worries, I appreciate the effort. I did go back and listen and they are indeed pronouncing sheí in the audio too.

I use a firefox extension to convert simplified to traditional, looks like it's open source so that may be of some use to you: https://github.com/tongwentang/tongwentang-extension.

Although there are some clashes that it does not handle, e.g. 隻 and 只 are both 只 in simplified, you just have to know which one it is from context, but the extension fails to convert to 隻 where appropriate.

jrrv··on Show HN: Turn native language audio into flashcards and shadowing practice
Is it possible to add traditional characters for mandarin?

Also the pinyin for 誰/谁 is coming through as shuí, whilst this character has two pronounciations, I believe shéi is the more common one.

jrrv··on How many of the 170k English words do you know?
Presumably it's a random batch of words since you can run the test again. I wonder how much the word selection affects the outcome. I got 66,750 with 20/20/15/17/14.

I'm curious how the difficult is chosen because "obfuscate" was included in the hardest difficulty but I would not consider that to me a difficult word.

Also I found that some of the definitions were not completely correct.

jrrv··on Lies we tell ourselves about email addresses
> In the year of our lord 2026, you can reasonably expect your users to know how to type their own email address

Lies we tell ourselves about users.

jrrv··on UK media fails to disclose defence sector links in nearly 60% of cases
LBC certainly falls within the "usual suspects"
jrrv··on Bird brains (2023)
Fun fact: octopus does not come from Latin, which would give the plural an -i ending. It comes from Greek, which means that if you want to be particularly correct about your plurals, then the plural is octopodes.
jrrv··on Czech Man's Stone in Barn's Foundations Is Rare Bronze Age Spearhead Mold
Such an interesting artefact just sat under some guy's barn... can't help but wonder how many more items like this there are out there, and how many of them we'll never find before they're accidentally destroyed.
jrrv··on Czech Man's Stone in Barn's Foundations Is Rare Bronze Age Spearhead Mold
I'm using uBlock, and I didn't see a single advert.
jrrv··on Yann LeCun raises $1B to build AI that understands the physical world
Lol. A lump of flesh can't be sentient

https://www.mit.edu/people/dpolicar/writing/prose/text/think...

jrrv··on DIY NAS: 2026 Edition
What makes a motherboard a NAS motherboard, precisely? I've got a decent Mini-ITX sitting around and I've been contemplating setting up/getting a NAS. Would be nice if I could re-use what I already have and save some money.
jrrv··on Cosmic Paradox Reveals the Awful Consequence of an Observer-Free Universe
Very interesting. Almost feels like a cosmic implementation of "If a tree falls in a forest and no one is around to hear it, does it make a sound?"
jrrv··on I analyzed the lineups at the most popular nightclubs
Am I missing something or is the author using dots for both breaking up large numbers and also for decimal points?
jrrv··on Type Theory and Functional Programming (1999) [pdf]
The Haskell looks much better, and I don't even know Haskell.

> If you know simd it’s easy.

Surely "if you know Haskell it's easy" is equally applicable.

jrrv··on This website has no class
:%s/;/:
jrrv··on Meta Ray-Ban Display
Really? Mine lumps together completely unrelated people whilst failing to group together the same person.
jrrv··on Equinox.space
I have pages of notes for a game like this that I've been thinking about since university, largely inspired by Battlestar Galactica and The Expanse. This game reminded me of it too, maybe I'll get to it one day.
jrrv··on Serverless Development with Serverless Framework
DynamoDB is used by Amazon.com.

"Across the 48 hours of Prime Day, these sources made 7.11 trillion calls to the DynamoDB API, peaking at 45.4 million requests per second." [1]

[1] https://aws.amazon.com/blogs/aws/amazon-prime-day-2019-power...

jrrv··on Entropic Gravity
Physics Stack Exchange: physics.stackexchange.com
Page 1 of 2Next →