Recent submissions

Comment · 6 years ago
Modern versions of excel (after office 2007), using .xlsx files, have a 1,048,576 row limit. But older versions of excel (before office 2007) used .xls files and had a limit of 65,536 rows.

I could easily see them exceeding this limit, if they were using an older version of excel.

Alternatively, even the new versions of excel enforce the 2^16 row limit if working on a .xls file instead of a .xlsx file.

Comment · 7 years ago
Unfortunately many managers are not adults, emotionally.
Comment · 7 years ago
I used to write my resume with LaTeX, but the last time I was job hunting I decided to take a different approach - now I keep my resume as a single semantic HTML document, and I apply useful categories and tags (as classes) to each bit of job experience/accomplishment/education I have listed, and I have a bit of javascript that makes it easy to hide portions from the printed version (via css print styles).

I do it this way because it allows me to keep all of my experience and history in one single place, while also making it easy to create reduced subsets tailored to specific jobs.

Comment · 7 years ago
One of the original starcraft games accepts 11111-...-11113 (I don't remember how many places, but all 1's and then a 3 or 4).

Guess how I figured that one out.

Comment · 8 years ago
Sorry, but no.

Most lithium chemistries have a nominal voltage near 3.3 - 3.7V per cell.

When you stack lithium cells in series for any sort of high-performance application, you need additional balancing circuitry to bleed off energy from the cells individually (tiny variations between cells results in them having different capacities, which means some will charge up at different rates, resulting in them DISCHARGING at higher rates, which results in pretty serious negative effects for the life of the battery pack). The only exception here is extremely well matched cells, which is how Tesla is able to get away with not using much balancing circuitry (they are very picky about the cells they use, and have enough cells in stock to pick ones with very similar capacities).

And the safety features include a lot more than fuses - there are over-voltage protection circuits (extremely important!), over-discharge protection circuits, temperature protection circuits (you can overheat a cell even without drawing too much power out of it).

In short, large stacks of lithium cells are a difficult and dangerous beast to handle, and a lot of work goes into keeping them safe. These cells tend to have very low internal impedance, and as a result a chain of them can produce staggering amounts of power.

Source: I work on the embedded protection systems for a company which makes specialty lithium-ion battery systems for industrial, aerospace, and defense customers.

Comment · 9 years ago
Comment · 9 years ago
> Birth defects aren't contagious and are not often fatal.

Well, not immediately fatal, anyway. What if a gene modification is developed that halves the rate of aging? Is it a birth defect to have a maximum life expectancy of only 120 years instead of 200 years?

Comment · 9 years ago
I had to deal with CORBA 6 months ago in the large scale architectures class at my university. I'm _very_ glad that class is over.
Comment · 9 years ago
My main display is the same resolution. I absolutely love it, and rarely feel like I'm wanting for space.
Comment · 10 years ago
Comment · 10 years ago
I disagree with this, in my opinion slack has a lot of features on top of IRC (offline messages, webhooks, etc) that make it much more usable for its target audience.
Comment · 10 years ago
I hope they present and push a focus on security with whatever they do. I use android because I don't like apple, but it seems like there's a new critical android vulnerability every 2 weeks, and they all take 4 - 6 months to actually get the patch to my phone.
Comment · 10 years ago
You are correct. I know there are sites out there that even aggregate camera feeds, although the more ethical ones remove any feeds where there may be privacy concerns.

Frankly, I would NEVER install such a device in my house. The engineering on many is (almost?) criminally flawed.

Comment · 10 years ago
These attacks are showing that's it's trivial to achieve remote-code-execution on many of these devices. So in a way, yes, they do have self-destruct built in.

Simple connect to one, and then overwrite the boot partition. Or rm -rf /. Or even just use the firewall to block all inbound and outbound connections (an IP camera isn't very useful if you can't view the feed).

Live from the official Hacker News API

A modern reader for Hacker News · SvelteKit + Skeleton