Engineer on @googlechrome. Involved in CSS and W3C standards. Previously @mozilla, @w3ctag. Mastodon: @dbaron@w3c.social
Rockville, Maryland, USA
Joined March 2008
- Tweets 7,521
- Following 1,244
- Followers 4,296
- Likes 18,519
It's nice to be ahead on rainfall for the year, for a change.
(by enough to keep us ahead for a few weeks I think)
Preliminary station-based precipitation departure from normal in 2021. At the annual scale, a lot of highly impactful seasonal anomalies are muted. Still, an overall drier than normal year.
1
4
L. David Baron @dbaron@w3c.social retweeted
And that can be expressed as a goal: People should have quick, costless access to vaccines, high-quality masks, high-quality tests, and boosters as needed. The costs of upgrading ventilation should be shared.
We've done fairly well on vaccines, poorly on most else.
7
66
8
354
I did do the @_pernosco_ video, posted in this separate thread:
1/5 Last week I mentioned I'd also share a demo of @_pernosco_, which is a debugger whose interface is designed for record-and-replay debugging, although the debugging itself is less about replay than about moving between program states of interest.
5/5 A few more links:
Pernosco: pernos.co/
The change I was debugging (which now contains the fix for the bug, but still isn't submitted): crrev.com/c/3307117
1
4/5 Another one of my favorite pieces of this video was entirely unintentional: I made a mistake and ended up in the wrong state. To fix this mistake, I just hit the browser's back button. Web technology (used well) really does have advantages.
1
1
3
3/5 The bulk of my rr demo video was really doing something that was a single logical operation: tracing backwards to find where a value comes from. One of my favorite parts of this pernosco video is near the opening, where I show that this becomes a few clicks in pernosco.
1
2
1
2/5 I recorded myself debugging (re-debugging, really) in pernosco. The bug turned out to be pretty simple; something that I perhaps should have figured out by looking at the code. However, I think it makes a reasonable demo of debugging in pernosco: drive.google.com/file/d/19TY…
1
2
2
1/5 Last week I mentioned I'd also share a demo of @_pernosco_, which is a debugger whose interface is designed for record-and-replay debugging, although the debugging itself is less about replay than about moving between program states of interest.
1/ Record-and-replay debugging has changed the way I work as a software engineer working on browser engines. I made a video showing how I used rr to debug one bug in Chromium.
drive.google.com/file/d/15Ef…
Some Chromium colleagues found this useful, so I'm sharing it here too.
1
3
1
12
L. David Baron @dbaron@w3c.social retweeted
The lack of testing site availability on evenings, weekends and holidays are driving healthy people to ED’s where the risk of COVID exposure is high. 5/6
34
1,180
65
9,647
Good they're ending it. A month late is better than a year and a half late, like with the travel restrictions for China.
The Nov. 29 ban barred nearly all non-U.S. citizens who had recently been in South Africa, Botswana, Zimbabwe, Namibia, Lesotho, Eswatini, Mozambique and Malawi.
to.pbs.org/3FrsGKZ
L. David Baron @dbaron@w3c.social retweeted
New: The U.S. has one agency that regulates cheese pizza and another that oversees pepperoni pizza. Efforts to fix the food safety system have stalled again and again. propub.li/3pnaNHv
1
24
5
66
3/3 I hope to do a similar video sometime soon showing Pernosco pernos.co/ (a commercial product), which is even more powerful, and what I've been using for most of my debugging lately. My first attempt at a video didn't work out that well, though.
1
3
4
2/ Some relevant links:
rr-project.org/ is the open-source debugger I was using.
bugs.chromium.org/p/chromium… is the bug I was debugging.
3
1
2
1/ Record-and-replay debugging has changed the way I work as a software engineer working on browser engines. I made a video showing how I used rr to debug one bug in Chromium.
drive.google.com/file/d/15Ef…
Some Chromium colleagues found this useful, so I'm sharing it here too.
4
21
2
88
For those who have trouble spelling omicron:
Divide it up by the two pieces in Greek ("o micron", or "small o"). (Think of the "micron" length unit or "micro" prefix.)
Contrast this with omega ("o mega", "big o").
(This is also clearer with the Greek pronunciation.)
2
7
So have we ended the travel ban from southern Africa yet?
It might have made sense for the 3 (?) days from when it was announced to when it took effect, but it doesn't make sense now.
Omicron is now the dominant coronavirus variant in the US. Last week, it accounted for 73% of new cases, according to the CDC.
cnn.it/3GXxzM4
1
3
10
L. David Baron @dbaron@w3c.social retweeted
Seeing so many people saying “I did everything right” as they say they have a breakthrough case of covid. It is dangerous to moralize contracting a deadly disease. You cannot personal responsibility your way out of a public health disaster.
158
6,558
401
33,441
L. David Baron @dbaron@w3c.social retweeted
Happy 25th birthday CSS1!
On December 17, 1996, W3C issued official recommendations for language specification, Cascading Style Sheets, level 1 (CSS1).
webdesignmuseum.org/web-desi…
#CSS1 #InternetHistory
2
185
33
454
L. David Baron @dbaron@w3c.social retweeted
I turn 40 today. I was planning to have a party but I canceled it last week because of Omicron.
I wrote about why I made that call, and how I thought about the risks—to myself, to my friends, and to our society. 1/
theatlantic.com/health/archi…
824
1,044
476
6,932