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jimpudar

234 karma · joined February 14, 2018

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jimpudar··on The Linux kernel's inability to gracefully handle low memory pressure
Yeah, usually you call ulimit before calling the process. The new process inherits the limits. If you want to modify the limits of an _existing_ process, you can use prlimit.
jimpudar··on The Linux kernel's inability to gracefully handle low memory pressure
You can use ulimit to set soft and hard limits for all sorts of system resources (including memory) on Linux.
jimpudar··on GM Cruise to delay commercial launch of self-driving cars to beyond 2019
The goal is eventually to have vehicles without manual controls, so this won't be an option.
jimpudar··on Neuralink Live Stream [video]
Sounds like in theory, you should be able to just remove the bluetooth battery unit from behind your ear to completely disable the implants. However, if someone else is in control of your brain, perhaps you wouldn't be able to...
jimpudar··on Neuralink Live Stream [video]
Symbiosis between man and AI sounds both exciting and incredibly frightening. Imagine on one hand the potential for improving our own intelligence, but on the other hand widening the gap between the rich who can afford this kind of augmentation and the poor who can't.

This is going to be a hell of a ride.

jimpudar··on Raspberry Pi 4 Review
It is, the sleeve carries the composite video signal. RasPi is intended to be usable for people from all sorts of economic backgrounds; there are still places where it's much more likely to have access to an old CRT than a modern monitor.
jimpudar··on Soulver – Notepad, meet calculator
If you like dc, give Emacs' calc mode a try.
jimpudar··on Raspberry Pi 4
I really love old CRT monitors. It's super nice to be able to hook up to them easily.
jimpudar··on Raspberry Pi 4
I'm so happy they haven't removed the composite video out in the headphone jack! If you didn't know, you just need a 3.5 mm TRRS connector - the pinout[0] looks like:

T - Left Channel Audio

R - Right Channel Audio

R - Ground

S - Composite Video Out

[0] https://www.raspberrypi-spy.co.uk/2014/07/raspberry-pi-model...

jimpudar··on Ask HN: Do you keep an engineering notebook?
I have a few Emacs org-mode[0] files in a git repository. I have one for work, one for personal projects, and one for home stuff. Works great for me.

I often take notes during meetings. The trick is to maintain eye contact with whoever you're speaking to so they know you're paying attention to them, not working on something else.

Sometimes I'll just bring a notebook and my pen, but I will generally put those notes into my org file afterwards.

I also track every project I work on in org-mode, with lots of TODO entries. Without it I have a pretty hard time staying on track.

[0] https://www.emacswiki.org/emacs/OrgMode

jimpudar··on Things I learnt the hard way in thirty years of software development
I keep all my Emacs config files in a git repository, so I can quickly pull it wherever I happen to be using Emacs. Might be practical for some IDEs too depending on their configuration file formats. I'd imagine it would work fine if the configuration is stored as XML.
jimpudar··on The decline of the family has unleashed an epidemic of loneliness
I lived next door to the co-op at State and Catherine, and there were a few people who lived there who were in their late thirties and definitely not students. I don't know about _all_ of them, but some definitely don't care if you are a student or not.
jimpudar··on Up to 25 cups of coffee a day still safe for heart health, study says
Typically people quote between 80 and 100 mg of caffeine in a "standard cup" of coffee. A Starbucks "short" Blonde Roast has around 190 mg.

Caffeine content will vary widely depending on the type of bean, roasting time, and the amount of ground beans used to brew the cup.

jimpudar··on macOS app to open the current directory in Terminal, iTerm, Hyper or Alacritty
Right clicking in a Finder window should allow you to open a "New iTerm2 Window Here" if you are an iTerm user.
jimpudar··on Ask HN: What overlooked class of tools should a self-taught programmer look into
Patterns of Enterprise Application Architecture

Enterprise Integration Patterns

Just start reading some Martin Fowler books, you will be up to your ears in patterns in no time :)

jimpudar··on Ask HN: What overlooked class of tools should a self-taught programmer look into
Yeah, far too often people create horrific spaghetti code of if/else statements which could be neatly coded as a state machine. This is a very important concept to grasp.
jimpudar··on Ask HN: What overlooked class of tools should a self-taught programmer look into
Racket is a very good Lisp for beginners, DrRacket makes it easy to get up and running with little effort.
jimpudar··on Ask HN: What overlooked class of tools should a self-taught programmer look into
I also find git blame extremely useful, along with code exploration tools like DeepGit [0]

[0] https://www.syntevo.com/deepgit/

jimpudar··on Ask HN: What overlooked class of tools should a self-taught programmer look into
Learning how to use dtrace / bpftrace [0] is very valuable if you ever need to get into serious systems profiling.

There are some really cool data structures out there you might not know about. One of my favorite basic ones that I get a lot of use out of is the trie [1] (a.k.a. prefix tree). Very useful for IP calculations.

Also look into probabilistic data structures [2], very amazing things can be done with them.

[0] https://en.wikipedia.org/wiki/DTrace

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

[2] https://en.wikipedia.org/wiki/Category:Probabilistic_data_st...

jimpudar··on Sears has another chance to avoid closing down
You might want to change your vacuum bags more often!

I'm certain if you search online you will be able to find bags for your vacuum.

jimpudar··on Larry Roberts has died
> people engaged in high-frequency trading

These people pay to have their servers colocated with the trading servers they are communicating with. That would be like having a VoIP call with someone sitting next to you connected to the same switch.

jimpudar··on Ask HN: Which tool do you use to create beautiful diagrams?
There's a senior architect in my organization who makes the most incredible, beautiful diagrams I've ever seen. He just uses PowerPoint.
jimpudar··on What Closing a Government Radio Station Would Mean for Clocks
I set my analog watch to WWV every couple of days.

I'm in California, so I can actually hear both signals at the same time (one from Colorado, one from Hawaii). You can tell which signal is which by the gender of the announcer. Pretty cool stuff.

It will be a very sad day for radio if it is discontinued.

jimpudar··on E-Cigarette Maker Juul Just Gave Its Employees an Average 1.3M Bonus
This is an incredibly well written comment. One of my best friends is a two pack a day smoker, and when I ask him why he doesn't even _want_ to quit, he has (less eloquently) given me a lot of these reasons.

He doesn't have a lot of control over his circumstances, and I can definitely understand the sense of control you can get from satisfying a nicotine craving. He's also mentioned the social aspect quite a few times. He frequently tells me that the best times in his life have all been smoking cigarettes.

My issue is that he is undoubtedly going to suffer major health problems, likely dying much earlier than he would have head it not been for the two pack a day habit. He knows this, and routinely jokes about dying before he hits thirty. I don't know if he really understands how young thirty is.

I do have empathy for him, but I love him very much and hate to see the damage he is doing to himself...

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
Do you have a link to the forum post about the Quiet Linear mod? I'd be interested in checking that out.

I used the Matias Ergo Pro with the Quiet Click switches pretty much exclusively before I got my Model 01, so I was already very used to that style of switch when I first got the board.

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
Do you use the quiet ones, or the clicky ones?

I have one of each, but I generally prefer the quiet ones.

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
Just a comment - I would be completely unable to use this board. I think the angle of the two halves of your board is way too steep.

Looks very cool though!

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
Same here. If you think there may have been QC issues with your board, reach out to Jesse and Kaia and they will take care of you.

Matias keyswitches are fantastic, I've never heard of anyone calling them "non-standard" or "cheap". They are a recreation of the classic ALPS keyswitches used in early Apple and IBM keyboards.

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
I've had RSI issues for a few years now, and I've tried a whole lot of split mechanical keyboards. I've found others I like, but there are a couple of "killer" Model 01 features that will keep me from going back to any other board:

* The 'fn' buttons under the palm are super ergonomic. They make the lack of physical function keys a non-issue. Which leads to:

* vi-style arrow keys everywhere! Just hit 'fn'!

* Modifier keys under the thumbs took a little while to get used to, but are so much more comfortable in the long run.

* Frequently used keys like 'Return', 'Tab', and 'Esc' are under your strong index fingers. Can't tell you how much better my pinkies feel between this and the previously mentioned modifiers being under the thumb.

* Curly and square brackets are very close to the home row. You just press 'fn' and they are right above the fingers of your right hand.

* Individually sculpted keycaps aren't a gimmick; they really make it much easier to find where your hands go.

In addition to those features:

* Matias keyswitches have long been my favorites.

* It has high quality wooden enclosures and cool programmable LEDs that really look great and stand out in the office. (Could be a con if you don't like the attention)

* Open source! Need I say more?

On top of that, it's been fascinating to read Jesse and Kaia's blog throughout the entire process. They are extremely responsive to questions and comments. You can tell they really have a passion for this product.

jimpudar··on Keyboardio Kickstarter Day 1278: A startling discovery
I backed Keyboardio in the initial round of funding, and now use the Model 01 every day. It is truly an incredible product!

I've been extremely impressed with Jesse and Kaia's transparency throughout the whole process. I'm sure they will come out on top of this.

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