News for hackers. Stuff that matters.

zro

Re:Cross Views on Wednesday February 26, 2025 @02:06PM (#43186960)
There's a whole bunch of these over at https://old.reddit.com/r/wigglegrams/ if you want more
Washing dishes with the machine actually tends to save quite a lot of water, as long as you actually fill the machine.
Re:How to Build a 50K Ton Forging Press on Thursday August 22, 2024 @03:28PM (#41323638)
The clear Nalgenes are polycarbonate, but the opaque ones (sold as "Ultralite Bottle" on their website) are made of HDPE
Re:The Law of Leaky Abstractions (2002) on Wednesday March 06, 2024 @05:49PM (#39622773)
In my experience (admittedly limited) you include the assembly in the compile step. Your linker hopefully puts everything together so you can talk to yourself
Tall with large head here, works pretty consistently for me
Re:A successful example of "adversarial collaboration." on Monday October 16, 2023 @05:52PM (#37907182)
This is a super interesting concept and I'd never heard of it. Thanks for linking!
Blindsight is one of my all time favorite books.

Looks like it's still available for free from the author's website [0]

[0] https://www.rifters.com/real/Blindsight.htm

Re:Intermittent fasting 2 days vs. 1 day per week on Wednesday August 03, 2022 @04:51PM (#32336533)
As an outlier more towards the other end, my weight tends to fall if I go below about 2500 kcal/day
Re:Optimizations Enabled by -ffast-Math on Wednesday October 20, 2021 @02:00PM (#28933789)
> NaN is unordered: it is not equal to, greater than, or less than anything, including itself. x == x is false if the value of x is NaN [0]

My read of this is that comparisons involving NaN on either side always evaluate to false.

In the first one if X or Y is NaN then you'll get do_something_else, and in the second one you'll get do_something.

As far as why one order would be more optimal than the other, I'm not sure. Maybe something to do with branch prediction?

[0] https://www.gnu.org/software/libc/manual/html_node/Infinity-...

Re:Find Someone to play chess with in London on Friday July 16, 2021 @01:26PM (#27858719)
Nf3
Re:●●|●●●●●|●●|● on Tuesday May 11, 2021 @02:24PM (#27121616)
I believe that was SCP-055
Re:What is your favorite C programming trick? (2009) on Monday November 23, 2020 @04:09PM (#25191937)
As an embedded C developer, I'm interested. What do you recommend looking into as other "low level, non garbage collected" options?
NPR article about the same, if you prefer to read instead of listen: https://www.npr.org/2020/06/24/882683463/the-computer-got-it...

I'll be watching this case with great interest

Blindsight has been one of my favorite books from my first picking it up. Watts is such a compelling author!

It looks like Blindsight is also still available for free on the author's website [1].

[1] https://www.rifters.com/real/Blindsight.htm

Re:A theory of Zoom fatigue on Tuesday April 21, 2020 @12:36PM (#22936555)
On the amateur radio side you see both types mixing in pretty amusing ways. On the one hand there's contesters and dx-ers that are all about confirming contacts as fast as they can, and on the other there's more casual people that'll talk about anything and everything that comes to mind. In my experience both sides use some amount of procdural language, but at very different cadences.
Do you have any good sources for places to start learining powershell? I'm pretty comfortable in bash, but powershell scares me.
Re:Ask HN: What physical books do you have? on Thursday March 19, 2020 @06:38PM (#22632502)
I only have two tech-realted books on paper:

- Microwave Transistor Amplifiers by Guillermo Gonzalez, which is a fantastic introduction and reference about high frequency circuit design

- The O'Reilly Linux Pocket guide, which has a cowboy on the cover and usually gets loaned to coworkers

Aside from that I've got a ton of sci-fi and high fantasy, but I'm slowly moving to a digital collection.

Re:Ask HN: What physical books do you have? on Thursday March 19, 2020 @06:27PM (#22632415)
Is SICP worth reading? I keep hearing about it, but it seems like it's mostly a resource for learning lisp. Is that not the case?
Also after it's observed
Re:Johns Hopkins Covid-19 Github Data Repo on Tuesday March 03, 2020 @02:35PM (#22477958)
It can be a bit of a gotcha when trying to share your work with others. They'll have to clone with --recursive or the submodules will come up as empty folders for them.
Re:Being a Noob on Wednesday January 29, 2020 @03:02PM (#22185152)
> I was reprimanded the other day, by management because I said in a presentation "I don't know"

Maybe it's because I'm still in the junior / recent-grad mindset, but my experience has been the opposite.

The most striking difference for me between academia and industry is that now it's okay to not know things. In academia you're expected to have the answers and be able to reproduce them on tests and things; in industry it seems much more acceptable to admit ignorance so long as you plan on eventually getting an answer.

Re:Using OpenAI Gym to train an open-source 3D printed robot on Monday January 27, 2020 @05:15PM (#22164414)
I'm not sure about doing that with physical robots, but I've seen a couple interesting iterations using simulated robots

https://www.youtube.com/watch?v=gn4nRCC9TwQ

Re:Using OpenAI Gym to train an open-source 3D printed robot on Monday January 27, 2020 @05:11PM (#22164372)
Looks like the legs are just for show [1], but I bet you could kitbash something

[1]http://inmoov.fr/legs-non-motorized/

Re:Ever Plugged a USB in Wrong? (2019) on Tuesday January 14, 2020 @02:58PM (#22048637)
I've only ever seen female B connectors on peripherals. Do they make motherboards that have them?
Re:Show HN: Cantools – an extensive set of CAN bus tools on Tuesday January 14, 2020 @10:46AM (#22045823)
There's also at least one repo [1] of DBC files that have already been reverse-engineered by the community

[1] https://github.com/commaai/opendbc

Re:Show HN: Cantools – an extensive set of CAN bus tools on Tuesday January 14, 2020 @10:41AM (#22045773)
Thanks for all your hard work! We used this constantly at $oldjob and it saved us a ton of time and effort.