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potatochup

491 karma · joined January 22, 2019

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potatochup··on The Yoghurt Mafia
Is RNZ not available from outside New Zealand?
potatochup··on The Yoghurt Mafia
Yup. Boil, let cool to 115F, add culture or frozen cube of previous yoghurt, into the instant pot for 9 hours.
potatochup··on The Yoghurt Mafia
The trick I've used is that I freeze cubes of the first batch in an ice-cube tray. Then whenever I make more, I unfreeze a cube, so I'm always making a "second generation" batch. My first generation I make from packets you can find online for ~$1.
potatochup··on Crazy fast build times, or when 10 seconds starts to make you nervous (2012)
Is it mostly compilation time, or link time? At least for debug builds, I found swapping out the linker to work wonders. There are some examples on https://endler.dev/2020/rust-compile-times/ (no affiliation, just 1st google result)
potatochup··on Elements of Dance Etiquette (2005)
Yup! The West Coast Swing community went though the same thing fairly recently. E.g. "No is a complete sentence". The social dance scene has traditionally been a place where unsavory behavior can go undetected/unchallenged, due to the social pressure of not being rude.

Even if you don't have unsavory characters, many people unintentionally tie their self-validation to getting accepted for dances on the dance floor, which can create a lot of angst. Managing expectations is a huge part of introducing people to social dance, since it's so different to the outside world.

potatochup··on Replaying real life: how the Waymo Driver avoids fatal human crashes
AEB is great, and I'm super happy that it's going to be standard, but its not going to totally eliminate the rear-ending problem. From wikipedia [1]:

> Forward collision warning plus autobrake is associated to a 50% decrease in front to rear crashes.

Similar stats are reported from around the world.

Low friction surfaces, weird car angles, poor radar/camera visibility and too high entry speed all mean the system isn't going to be 100% effective.

[1] https://en.wikipedia.org/wiki/Collision_avoidance_system

potatochup··on Honda's now selling the first production car with level 3 self-driving
> the system is driving with full responsibility on Honda

Yeah. I guess we'll have and wait for real reviews to see under what conditions this operate (or more importantly, fail to operate and hand control back to the user)

potatochup··on Honda's now selling the first production car with level 3 self-driving
At least from this video [1], it looks like it has the following features:

- hands-free overtaking of slower vehicles when at highway speeds

- a "traffic jam mode" that is hands-off up to a certain speed, and plays a video on the center display

This seems... not that impressive? I haven't seen many real reviews yet though, just a bunch of press releases filmed on closed courses.

[1] https://www.youtube.com/watch?v=_hBwmFbpNCA

potatochup··on RFC6238 TOTP implementation in pure PostgreSQL
Can someone explain where/why this might be used? Or is it just for fun?
potatochup··on The Left-NIMBY Canon
Yup! I mean you can see why, it would be political suicide. But it also means that if you want real solutions, none of the centralist parties have the guts to do anything about it.
potatochup··on Why Zig when there is already C++, D, and Rust?
I was interested by this statement made in the article: "The entire concept of the heap is strictly in userspace"

Is that just an analogy between Kernel and userspace from operating systems? Or is it an actual term used for programming languages, when abstract from an operating system?

If I was running zig on a bare-metal embedded device, and wrote my own heap allocator, is it appropriate to call that a "userspace" heap allocator?

potatochup··on GCC Rust: GCC Front-End for Rust
The VLE I'm talking about is this: https://www.st.com/resource/en/user_manual/cd00161395-variab...

This may be a vendor-specific extension though?

potatochup··on DuckDuckGo Reaches 100M Daily Search Queries
Yeah, same here with NZ. Even with the location toggle enabled, if I don't append "NZ" to my query, I end up with a whole lot of useless results from the USA, UK, etc. I still use DDG for everything but the most technical queries though.
potatochup··on GCC Rust: GCC Front-End for Rust
Does this mean that compilation target currently supported by GCC would now allow rust to target that architecture? Specifically I'm thinking of PPC cores with the VLE extension, which LLVM does not support (as far as I'm aware).
potatochup··on The beautiful Silent ThunderBolt-3 PC
I have a HP "cube" G2 dock feeding a 4k60hz monitor, usb peripherals, ethernet and power to my macbook, that I want to be able to plug into my desktop PC. I don't have USB-C on my desktop, does anyone know what kind of PCI-E expansion card to get so this will work?
potatochup··on Electrified wingsuit from BMW reaches 186MPH on first flight
I guess his arms are fixed into the suit, but it still looks like if you relaxed your arms a little too much you could get your hands into the turbine...
potatochup··on The world needs nuclear power and we shouldn’t be afraid of it
Are there any details on how much processing you need to get uranium from the ore? My intuition is that it is a lot harder to get to uranium fuel from the ore compared coal and oil.
potatochup··on PyPy 7.3.2 triple release: Python 2.7, 3.6, and 3.7
Eh, there are still huge legacy codebaes around that benefit from pypy, not everything is worth a rewrite
potatochup··on Be skeptical of Ring's indoor security drone
I've had cops show up the next day, take fingerprints, footprints, give me a call a few weeks later when they tracked down the perp. I don't live in the USA though...
potatochup··on Swift System Is Now Open Source
If you don't need super-high performance it should in theory be easier to develop in swift as the automatic memory management is easier to deal with than rusts lifetimes/borrow checking. I tried them both out a few years ago, but gave up on swift because the cross-platform development story was poor. That's gotten better now it seems, but I'm already comfortable enough writing rust for everything I see no reason to switch.
potatochup··on Tesla says its battery innovations will deliver its goal of a $25,000 car
Even if the weight of the cells doesn't change that much, if the new cells aren't as heat tolerant then there might be significantly more weight and space allocated for cooling, meaning you get less cells
potatochup··on UC Berkeley inappropriately admitted students as favors to donors
Side note, but why are water polo and volleyball considered upper-class sports in the USA? I understand regular polo, rowing, etc, because of the cost of equipment. But at my school (on the other side of the world), volleyball was for the islanders, and water polo was for the misfits who couldn't make it in a more popular sport. What sports in the USA are for the plebs? Baseball?
potatochup··on Ask HN: How to Learn Rust
Aside from the rust book, I learnt by porting some older python scripts (~100 lines) into rust. It was good starting with something that had a simple data flow so you don't have to worry about lifetimes as much, and performance isn't a concern so you can just ".clone()" if you don't want deal with references
potatochup··on Tesla can detect aftermarket hacks designed to defeat EV performance paywalls
Teslas don't have to phone home to operate. They work just fine off-grid, and you can also opt-out of any data collection/phone home [1] if you want. As mentioned elsewhere in this thread, the burden of proof is on the manufacturer to prove that the modification caused the damage (at least in the USA), so removing the sim and turning off wifi is unlikely to void any warranty

[1] https://www.tesla.com/about/legal#choice-transparency

potatochup··on Tesla can detect aftermarket hacks designed to defeat EV performance paywalls
It will be interesting to see what impact right-to-repair laws have here. They are already forcing the release of service documentation, tooling & procedures. But does that also apply to re-certifying a crashed vehicle? Will denying charging to crashed vehicles even be allowed?
potatochup··on Tesla can detect aftermarket hacks designed to defeat EV performance paywalls
The biggest concern I have with black boxes like this is how its going to interact with updates. Presumably they are intercepting messages on the CAN bus. The CAN bus is fairly easy to crack if you know what you are doing, but it also could change with the software version. The black box has probably hardcoded the message IDs that they are intercepting, but if the messages get reshuffled around in a software update it'll be sending out some data for some random other message which could have safety implications.
potatochup··on Rare plants that ‘bleed’ nickel
What do you do with the mushrooms afterwards? (In the heavy metal case). Presumably you can't eat them, burn them... Do you just pile them up somewhere?
potatochup··on Cat vs. panel heater: which is better?
Buying a house (in NZ) is a liquid investment with better returns than the stock market and no captial gains tax. Building involves much more risk, nimbyisn, geographic constraints. The cost of building is more closely related to the cost of labour than it is materials, so even at higher prices margins aren't nessecarily better.
potatochup··on Cat vs. panel heater: which is better?
Presumably, high rates of investment drive up prices (since supply is somewhat constrained). High prices reduce the ability for people to purchase, so they have to rent, but then higher purchase price means the investors have to increase rent too. This means there is a lot of demand at the low end of the housing market, where houses aren't as well maintained/insulated/upgraded
potatochup··on What harm do minimum wages do?
As an interesting aside, I recently discovered New Zealand has minimum wage exemptions where productivity is low due to disabilities or other circumstances.

https://www.employment.govt.nz/hours-and-wages/pay/minimum-w...

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