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jrjarrett

228 karma · joined November 18, 2010

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jrjarrett··on The Magnetar, nature’s ultimate superweapon
Musk was re using ships from Iain Banks’ Culture series where ships are sentient.

Voice Of The Whirlwind is from The Expanse series, where a human colony finds ancient aliens tech and builds a class of warship called the Magnetar-class shops. They use an intense magnetic weapon to literally dissociate an Earth station as a show of force.

jrjarrett··on Stop Interviewing with Leet Code
When do/did you have time to study LeetCode? After a day’s work at my actual job, I’m done. My brain is fried. Writing more code is the last thing I want to do.
jrjarrett··on Ask HN: Any other self taught devs terrified of interviewing these days?
On an interview you have maybe 45 minutes to get something working.

In real life, it’s going to take you longer to understand the problem enough to even attempt the naïve solution. So in the context of an interview, get ANYTHING working.

jrjarrett··on How Intelligent Are Cats? (2004)
I have an automated feeder for my 2 cats. One has a better time sense than the other and would camp out and devour both bowls when it dispensed.

We got a timer and set it to chime when the feeder went off, which helped.

The feeder has an app that triggers an alert on my phone and now if my phone makes that alert sound, they perk up and bolt to the basement.

So they’ve also learned to associate the alert sound to food….

jrjarrett··on Kodak factory tour: How does Kodak make film? [video]
I worked at KAD for the first 7 years of my 16 years at Kodak; I was in IT, thought.
jrjarrett··on Study on quality of sleep when pet cats choose location of slumber
From reading the title I expected it to be a study along the lines of “if your cat decides to sleep on your face, then your sleep will be of lesser quality than if it decides to sleep at the foot of the bed.”
jrjarrett··on Why coding interviews aren't all that bad
Yes, exactly-this is what I wanted to get across in my comment down post.
jrjarrett··on Why coding interviews aren't all that bad
Except that skews the candidates that pass younger. If you’re fresh out of school, you remember binary trees or sorting algorithms.

After doing software development for 20+ years, you’ve been using those structures as a small part of the larger problems you now solve. If you go looking for a new job, you don’t necessarily remember all these tricks to invert a binary tree, and you fail. Even though you have all that experience in what you actually will be asked to do on the job.

jrjarrett··on It’s your friends who break your heart
I count myself very lucky. I have friends from childhood and college that are still very close. We don’t get to see each other as often as we’d like but we do keep in touch and I know they are as there for me as I am for them. Our friendships have survived moves and children.
jrjarrett··on A non-standard book list for software developers
Holy crap, the Comer XINU book is still around. I used that in my undergrad Systems course in the mid ‘80s…
jrjarrett··on New cars make me want to Saab (2020)
I had an Alltrack, only in white. It was totaled in an accident last November, with only 11,000 miles on it.

The first thing I thought after we knew we weren’t injured was, “oh NO I am going to have to buy a new car!”

Used Alltracks with more miles were going for both more than what I paid and more than the insurance payout (also more than I paid).

I have given up ever having a manual again. I managed to get a Honda Accord hybrid, and the only thing I can say about it is the gas mileage is nice right now. But it’s absolutely soulless, I feel unconnected to the road when driving, and it’s just boring and an appliance.

jrjarrett··on Caltech's CS interview prep course
That’s not always true. I’ve recommended 3 engineers from my previous company to apply at my current company. All of them I deeply respected for their skills and thought they were smarter than I was.

None of them got offers. One didn’t even get past the take-home. I worked with them. I KNOW they had the tech skills to do it.

jrjarrett··on Code Tests are pointless – doubly so for DevRel
Did you let them Google while doing your test?

Did you ask questions about their CV projects that dove into the implementation of the project?

jrjarrett··on Get mock interviews now, pay when you find your next job
> I don't get why everyone seems so hung up on the interview.

Because if you need a job, the wild asymmetry between you and the interviewers.

You have to be ON for that short time and ready to deal with questions like what you got about "best vacation" or in the next question code a red-green tree implementation, followed seconds later by describing a full scale cloud architecture.

All of that in an hour.

And if you falter anywhere along the line, they reject you and you worry about how you will feed and clothe yourself and your family.

jrjarrett··on 178 Seconds to Live
There’s a whole separate rating for learning exactly how to do that. I got my instrument rating last summer.

One very important skill you’re taught is to ignore what you feel-your inner ear will lie to you and try to kill you. Pay attention to the instruments to know whether you are turning or ascending/ decending.

jrjarrett··on Atlassian fired me while I was taking care of my wife who is fighting cancer
This is a particular hot button for me, since when I started working, I got separate banks of vacation and sick time. It took me years to build up to a decent amount of vacation time; I rarely took sick time, but that was time when I truly couldn’t work and needed to recover from something.

My last job was a fixed bank of PTO- that had to account for everything; vacation, sick. I was constantly anxious if I woke up feeling unwell because that was some number of days I wouldn’t be able to take as vacation.

If a company wants to have a limited amount of time off, they really need vacation and sick time as separate banks, treated differently for different reasons-vacation for planned, sick time for unplanned.

jrjarrett··on Vaccine experts: Covid-19 booster shots aren't needed now
In the mid 70s I contracted measles. I was only 9 or 10 but I think I remember it was because there was a batch of vaccines that didn’t work, or maybe it was doctors learned we actually needed two doses. Whatever; I’d had the vaccination prescribed at the time, it didn’t work, I got measles.

Fast forward 25 years to when I applied to grad school. There was a measles outbreak happening and in order to attend I either needed to have a recent vaccination or a blood test proving immunity.

Even though I had natural immunity I just went ahead and got the additional vaccination. It was faster, cheaper, and I didn’t care.

The point is, medical knowledge changed. No one made a big deal about needing an extra vaccination. No one made a big deal about even needing certain vaccinations to do things like go to school. Why now?

jrjarrett··on The time Pepsi got sued for a $33M fighter jet
I’m sorry. Why on earth would any reasonable person think you could turn in 7 million points for a jet?

It was a clever piece of advertising ruined because some self important snot could not see the humor.

jrjarrett··on Ask HN: How you even get an interview?
How do you find recruiters like this? How do you make that contact?
jrjarrett··on Stop the “Hard Work” Obsession
I work in the US for a “startup” company. They’ve gotten a big round of funding and are hiring like crazy.

There’s constantly this exhortation to “work hard” and “overcome the obstacles”. People work ALL THE TIME. There’s an underlying pressure to be on constantly.

And I’m asking “why?” I’m an IC. I am by no means invested in the company. If some big event happens, the C-levels and investors may pay out. I might be lucky and keep my job. I’ll bet money that the good health insurance we have and “unlimited” PTO goes away when that happens.

So again, why should I put in extra to make someone else rich? I have no problem with working within reasonable bounds and trading my skills for a salary. I don’t want to start my own business.

jrjarrett··on If you've been laid off, please avoid this mistake in interviews
But what if you DIDN’T have a good amount of savings, or you get no severance?
jrjarrett··on Private Pilot Ground School
The 20 hrs/ 40 hrs for PPL is not a hard limit. If you are not ready, a decent instructor will not sign you off to take the check ride. Even if you have 20/40/100 hours—the instructor will not let you take it until they feel you are ready.

So it may cost you more or take you longer. If you are truly interested, you keep with it, or decide to stop.

jrjarrett··on The dystopian world of software engineering interviews
I start a new position Monday. I expected my search to be exactly like this, so I started early.

Within a week of setting the "would hear from recruiters" flag on my admittedly-thin LinkedIn profile, I had 3 solid leads from 3 companies.

I had 3 in-person interviews, and even feeling like I flailed a bit on a couple of the coding exercises (I had the exact panic about writing The Game of Life in 60 minutes), I had two offers and one almost-offer. (The almost was more due to they wanted a principal engineer vs. senior engineer).

Maybe around where I am companies are learning their lesson.

jrjarrett··on Do you aim for 80% code coverage? Let me guess which 80% you choose
I've used this metric but intelligently - I've used tools to SEE what is covered or uncovered.

Simple constructors or accessors that end up not getting coverage are fine, I believe you can see that you have little risk in not writing test for them. If you're shooting for package-level tests and you have no separate tests for POJO's (in Java) - little risk there.

But if you see a big section of exception handling that has not been tested -- that's a sign of a risk. Test that stuff.

jrjarrett··on Will Bright Star Betelgeuse Supernova?
Out of curiosity, I wonder what the closest star to Sol system is that is large enough to supernova?
jrjarrett··on Veteran executives and financiers helped fuel WeWork’s rise and fall
Not entirely.

What about the employees of WeWork? They lose their jobs because "a bunch of rich people paid for a guy to live like a king."

They lose their homes, access to health insurance, the ability to retire someday.

There's a big difference between some billionaire losing some rounding errors and someone trying to provide for their family.

jrjarrett··on Ask HN: How many of you have been impacted by a layoff?
This is my worst nightmare.

-Just as I was finishing college, my father, who only had a high school education, worked for GTE Sylvania for 25+ years. The company was sold, then closed the small plant he worked at. The best he could find after that was stockroom work at a department store. That triggered depression in him and a big rift in my parent's marriage.

-20 years ago my brother worked for Xerox, and was laid off/downsized. He and his wife had a third child on the way, had just built a house. It took him a year to find a job as IT support for a law firm. That traumatized him so much he's overworked for the company ever since.

-I worked for Kodak for many years. The last 2 years I worked there in the early 2000's, my department was under constant layoff threat. At that point, I'd decided I was moving out of NY, and wanted the severance package (but didn't get it)

-After moving to WI, 9 months into my new job there, our department had a round of layoffs. I was terrified since I was the last hired, and now was hundreds of miles from my support network. I survived, and went on to work there for 10 more years.

-My partner, after working for a financial services company for 26 years, got a boss who didn't like him, and frankly I think did not like LGBTQ folks, and maneuvered him into being a "displaced worker". He got let go, 5 years before his pension and years of service would have put him in a place to be able to comfortably retire.

So I haven't ever been laid off, but I have seen how much damage it can do to people I care about and their futures.

I worry about this every day, especially seeing what happened to my dad and my partner. I have been saving for retirement, but I really need the next 5-10 years to let that build to be able to comfortably retire.

jrjarrett··on Costco gained a cult following by breaking every rule of retail
I'm wondering how Costco has managed to hold out against the stockholders demanding more.

Bravo to them for doing it!

jrjarrett··on Travel without a phone
I think you can divide this into four legs:

"Phone-as-camera" - people have always traveled with cameras since it became practical. They took crappy pictures of fireworks, or whatever, on film. Perhaps a bit more mindfully because of the limited amount of exposures on a roll of film, but it's still a major way to capture a memory. A shutterbug would spend just as much time shooting film and not being "in the moment" as someone with a phone. It's just that now phones work as pretty decent cameras along with all their other features.

"Phone-as-nav" - this is a great advance over paper maps in that it tells you where you are on the map.

"Phone-as-comms" - also a great advance in that you can get in touch with travel companions or make contact with locations.

"Phone-as-distraction" - aha. THIS is where I think the issue comes in; if you are too busy tweeting or reading email or playing Clash of Knights while you're visiting the Pyramids or the Forum Ruins, THAT'S a problem. That's where you need to put down the phone and be a part of what you've traveled to ostensibly see.

jrjarrett··on Questions to ask a company during a job interview
Assuming you CAN take unpaid time off, and not have that penalize you.
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