progers7

Joined 13 years ago

Karma

315

Submissions

Member since

Mar 1

View on Hacker News

Recent submissions

Comment · 1 year ago

Accessibility is a key reason for this proposal. Today, canvas accessibility is quite limited. This proposal enables the browser to know how accessible dom elements map to canvas pixels.

Comment · 1 year ago

This proposal is a lot like an easier way to draw foreign object into canvas. This proposal supports new features too, such as updating the canvas when the content changes, and interactivity.

Comment · 3 years ago

Gecko is base-60 a.k.a. sexagesimal (https://en.wikipedia.org/wiki/Sexagesimal) which is highly divisible. In Firefox, a pixel is sort of a CSS minute :)

Blink and WebKit are less sexy and use tetrasexagesimal a.k.a. 1/64 (https://trac.webkit.org/wiki/LayoutUnit). 1/60 was tried originally, but it was switched to 1/64 for performance and to avoid precision loss. The reason it's faster is interesting: floating point values are also stored as number with a base-2 exponent, so to convert to/from floats, you can use shifts instead of needing division. The differences between 1/60 and 1/64 were important 10 years ago but are pretty minor now.

If you're interested, the code is at https://github.com/mozilla/gecko-dev/blob/d36cf98aa85f24ceef... and https://source.chromium.org/chromium/chromium/src/+/main:thi...

Comment · 4 years ago

Lego continues to be a favorite in our house. Duplo for 2-4, and Lego for 3+.

Comment · 4 years ago

I have saved a little script to use with git bisect and a stashed test: https://gist.github.com/progers/998452a15180ae369fee338bb393...

Comment · 4 years ago

Double requestAnimationFrame will still work and is the technique used by the WPT repository (a test suite shared by all major browsers): https://source.chromium.org/chromium/chromium/src/+/main:thi...

Comment · 4 years ago

There's a great children's history book titled "This Bridge Will Not Be Gray" by Dave Eggers that goes into the early days of the color choice. The bridge was shipped over from east coast metal works in orange, so it was not gray to begin with. The choice to keep it orange involved some public support so I think it is unlikely that it was ever painted gray, even temporarily.

Comment · 5 years ago

This article is just about acceleration and stacking is not introduced. WebKit's architecture ties together the concepts of stacking and acceleration. A positive effect is that it will be quite easy to support stacking in SVG with this work.

A negative of joining the concepts of stacking and acceleration is that it is difficult to get acceleration without introducing paint order bugs where the accelerated content starts painting above non-accelerated content.

Comment · 5 years ago

Thanks for the recommendation. If this comment piqued anyone else's interest, as it did mine, there is an updated version of Bloomfield's Let’s Read: https://www.amazon.com/Lets-Read-Linguistic-Clarence-Barnhar...

There is some discussion of the differences in the two editions in https://news.ycombinator.com/item?id=4665466 as well as the reviews on Amazon. I am going to give the updated version a try.

Comment · 6 years ago

SVG filter support in Chromium is actively being worked on, primarily led by an incredible engineer at Opera ([email protected]). This work has been ongoing for almost a year and should complete in Q4. Please star https://crbug.com/109224 for updates (stars also help prioritization).

Comment · 6 years ago

Thanks for the link. This CDC guidance is basically the tl;dr of the actionable parts of the medium article. The CDC guidance is:

* Maintain good social distance (about 6 feet). This is very important in preventing the spread of COVID-19.

* Wash your hands often with soap and water. If soap and water are not available, use a hand sanitizer that contains at least 60% alcohol.

* Routinely clean and disinfect frequently touched surfaces.

* Cover your mouth and nose with a mask when around others.

A small difference between the medium article and the CDC guidance is the order of importance, particularly as the weather gets colder in the US. The medium article argues #4 (masks) and #1 (distance) are more important than #2 (hand washing) and #3 (cleaning). The order on the CDC site is probably more of an artifact of how the guidance evolved rather than the relative importance (the wayback machine shows the mask bullet was added June 1st: https://web.archive.org/web/*/https://www.cdc.gov/coronaviru...).

Comment · 6 years ago

See A Satellite Tonight (https://james.darpinian.com/satellites) is a nice tool for finding these. I have a young kid and it's been fun heading out at night and spotting these.

Comment · 6 years ago

"Almost 2 percent of the kids diagnosed with COVID-19 in the United States have died from it, and the majority of them wind up in an ICU in a hospital."

Is this a typo? Possibly he meant 0.2%?

The data from my county (Alameda) has 1,450 cases <18 and 0 deaths: https://covid-19.acgov.org/data.page

Similarly, data from South Korea, Spain, and Italy, and China is <= 0.2%: https://ourworldindata.org/mortality-risk-covid#case-fatalit...

Comment · 6 years ago

If https://www.myvisajobs.com/Reports/2019-H1B-Visa-Category.as... is accurate, the bay area was the top recipient of H1B recipients in 2019.

Comment · 6 years ago

This is for all years, but the numbers for 2019 seem to indicate SV will be affected: https://www.myvisajobs.com/Reports/2019-H1B-Visa-Sponsor.asp... Google is #8. Amazon, Facebook, Apple are in the top 20. I don't know how accurate this list is, but I am worried for my colleagues.