Before I get to the part about me, some brief thoughts on Hui Jing’s and Eric’s sharings:
I was utterly gobsmacked when the emoji Hui Jing used for my talk title (as she always does with talk titles) turned out to be 🐙. How did she know the octopus was my favorite marine animal?! At the end of my talk she said it was a guess. Georgie, who thought it was my doing, said it was a “damn good guess” (her exact words), and I have to agree.
Before the event even started, I was secretly hoping that the CSS color of this month would be rebeccapurple, in honor of Eric. And well, I totally called it. And it was spectacular, wonderful and bittersweet at the same time. I’m sure a few heartstrings were pulled — I know mine was. There’s a reason I use it here on NOVALISTIC.com, too, which I’m super happy I got to tell Eric himself in as direct and personal a manner as this.
I was there when Eric unveiled his site redesign, Hamonshū, after CSS Naked Day 2020 (which I participated in as well!). He would publish an article as well about the background effects he implemented, so it came as no surprise, I said, that he’d develop a talk about it. That’s not a bad thing; it was great to be able to listen to him speak about it and get a visual insight into the process. Even if I was somewhat preoccupied with trying to keep my nerves (in fact, throughout both Hui Jing’s and Eric’s segments I was constantly talking to Georgie privately in the Zoom meeting chat)…
I’d like to extend my utmost gratitude to not only Hui Jing but also Eric and the rest of the audience for allowing me extra time to calm down until I was ready to share my screen and start talking, during which time Hui Jing shared some fun facts about me and dove into a chat with Chris, as filler. Thank you all for your patience, which you continued by my request in the first slide of mine you saw!
So, getting to my talk now. Why the sudden decision to put together a presentation on PowerPoint about Selectors, my favorite thing? Because of this:
We are incredibly honoured to have @meyerweb speak at Talk.CSS next month. It's surreal to think that we have been around for 5 years now. Please join us (online) for this wind-up edition on 4 Nov. Details in the link :)https://t.co/bEISlxp2Ju
While it was super cool that we actually managed to get Eric to share with us, it was the last part of the tweet that had me shook: “this wind-up edition”. That’s right: Talk.CSS #56 was going to be the last ever Talk.CSS (meetup in this format, anyway).
You see, after I started speaking for the first time at Talk.CSS #46 at the beginning of the year, I had written this footnote:
Hey there. How are you doing? I hope you are well.
The COVID-19 outbreak has thrown everyone for a loop in both direct and indirect ways, and (I’m sure you and) I have been no exception. I’m happy to report that I have not caught the virus (Singapore has handled it well, for certain definitions of “well” I won’t get into), and will take utmost care to keep it that way.
In the short term (i.e. sometime this month) I plan to update my battlestation with my biggest incremental update to Radiance yet. Beyond that I will continue to work on the updates to the LEGO Room that I mentioned last year, as well as miscellaneous housekeeping elsewhere on my site.
But in general, I will be taking things slow. I wish I didn’t have to, but right now I have to if I want to keep it together for a little longer, and to be clear it’s still a nice thing to be able to do, not something I’m reluctantly settling for. Talk to you later.
That biggest incremental update to Radiance yet actually happened. Praise God! However due to world-changing events that took place soon after, I never got to work on the LEGO Room. I’m still actively pursuing my LEGO hobby, but I just haven’t had the energy to also update the site along with it. Furthermore, in March a new version of the Brickset API was released, with the current version on which my site depends no longer functional as of this writing. This has not broken the LEGO Room in any way, but it has prevented me from updating my collection until I finish upgrading it to the new API. That is indeed in progress but, for obvious reasons, will take a while.
Having said that, I have indeed been taking things slow; in fact, slower this year than any other year. I’ve been focusing my time on recuperating mentally at home, and navigating the “perilous” new normal outside world as it slowly reopens. I’ve been playing plenty of video games (the then-newly released DOOM Eternal actually saved me from a crisis, believe it or not, and remains one of my favorite games of the year). I wrote only a single technical article (not counting Talk.CSS #46) and it was about JavaScript, and have left my site pretty much dormant and been nearly completely inactive on Stack Overflow. I even stepped down as a Microsoft MVP and am now in the MVP Reconnect program.
And I suspect I will continue to take things slow for the foreseeable future. But I’ll be at Talk.CSS #56 tomorrow after months of not attending, and it’ll be a big one for me. Maybe I’ll see you there.
I was writing a userscript a couple of weeks ago and had the opportunity to use Array.prototype.every()/some() for the first time. (I only needed one of them — I ended up going with some() for semantics reasons.)
This wasn’t a performance-critical context, but nevertheless I started to wonder if every() would immediately return false as soon as it found an element that didn’t meet the condition, and some() would immediately return true as soon as it found an element that did meet the condition.
MDN states that they do, but I wanted to see some numbers. So I ran a handful of quick n’ dirty tests in the Firefox console to check it out. For the sake of organization, here’s the setup:
function bench(label, test, loops) {
loops = +loops || 10;
let t = [];
for (let i = 0; i < loops; ++i) {
let tt = performance.now();
test();
t.push(performance.now() - tt);
}
let avg = Math.round(t.reduce((a, b) => a + b) / loops);
console.log(`${label}: ${avg}ms avg of ${loops}`);
return t.map(Math.round);
}
const a = [1, 1, 1, 1, 1, 1, 1, 1], b = [0, 0, 0, 0, 0, 0, 0, 0];
const isEqualToOne = n => n === 1;
Here are the tests:
bench('every() is true', () => {
for (let i = 0; i < 10_000_000; ++i)
a.every(isEqualToOne);
});
bench('every() is false', () => {
for (let i = 0; i < 10_000_000; ++i)
b.every(isEqualToOne);
});
bench('some() is true', () => {
for (let i = 0; i < 10_000_000; ++i)
a.some(isEqualToOne);
});
bench('some() is false', () => {
for (let i = 0; i < 10_000_000; ++i)
b.some(isEqualToOne);
});
Here are the relevant computer specs:
Windows 10, version 1909 (build 18363.720)
AMD Ryzen 7 2700X (8 cores, 16 threads, tests running at 4.0 GHz via Precision Boost 2)
16 GB DDR4-3200 RAM
And here are the results in Firefox 74.0:
every() is true: 1501ms avg of 10
every() is false: 1382ms avg of 10
some() is true: 1339ms avg of 10
some() is false: 1459ms avg of 10
It looks like there is indeed a difference, albeit a small one. Specifically,
Array.prototype.every() returns false 7.9% faster when the first of 8 elements doesn’t meet its condition, than it returns true for all elements; and
Array.prototype.some() returns true 8.2% faster than it returns false, in similar circumstances.
I wanted to see how the results compared in other browsers, so I attempted to run these tests in both the new and legacy versions of Microsoft Edge, as well as Chrome. In doing so, I discovered that V8 and Chakra appear to cache function calls after the first couple of iterations, causing subsequent iterations to clock far shorter times and invalidating the output of bench().
Frustratingly, there does not appear to be a way to disable this behavior, so I had to significantly decrease the iteration count using the loops parameter I just happened to have had the foresight to include. I also had to decrease the number of calls to every() and some() in Edge Legacy and increase it in the new Edge and in Chrome to get reasonable times.
Here are the results:
Edge Legacy 44.18362.449.0:
every() is true: 2451ms avg of 3
every() is false: 1897ms avg of 3
some() is true: 1811ms avg of 3
some() is false: 2488ms avg of 3
Edge 80.0.361.69:
every() is true: 467ms avg of 2
every() is false: 153ms avg of 2
some() is true: 154ms avg of 2
some() is false: 424ms avg of 2
Chrome 80.0.3987.149:
every() is true: 465ms avg of 2
every() is false: 153ms avg of 2
some() is true: 156ms avg of 2
some() is false: 428ms avg of 2
(Yes, I really did have to limit it to just 2 iterations in V8 before it started caching.)
The difference appears significantly larger in Chakra at 22.6%/27.2% faster, and is just ridiculous in V8 at a whopping 67%/64% faster. It’s not immediately clear to me why when I compare the source implementations, so perhaps someone more familiar with the code might be able to shed some light? It doesn’t help that the SpiderMonkey and ChakraCore implementations are literally just JavaScript, so it’s got to be something way under the hood. But here are the links anyway:
All told, since I was just writing a userscript for Firefox, which is my daily driver, for personal use, I’m not too worried. But I did learn a thing or two about Array.prototype.every() and Array.prototype.some(), more than I bargained for, and I thought it might interest other JS performance junkies, which is why I’ve blogged about it. Hope you learned from it, too.
Well, I haven’t blogged about Talk.CSS since my first two times there. That’s not good. I had a few more but I never got around to them due to chronic illness, executive dysfunction and whatnot. But today, the only thing I’m down with (and have been since Tuesday) is a throat infection that hasn’t gotten worse yet, so I’m making the most of tonight by pushing this one out.
So I went to Talk.CSS today, the first of the year. This time it’s at Microsoft Singapore’s new office at Frasers Tower. It would be my first time there after my last visit to the old office for last year’s Insider Dev Tour, so I was pumped.
But this being a new environment, I had to take precautions to ensure things went as smoothly as possible. To that end I pinged Hui Jing and Gao Wei on Twitter:
@hj_chen@wgao19 What time y'all setting up tomorrow? Thinking of being there super duper early to calm my nerves.
And then I had the brilliant idea of going through Sarah, my Microsoft MVP contact from Microsoft Singapore, as well. It would be my first time meeting her in person. She said she’d pick me up after finishing her meeting; I couldn’t go inside so I waited at the lobby for her.
Turns out, when I first got to the lobby, I was so calm that I could confidently decide to tweet this to the former two:
That’s right: even before I’d set foot in the new office, my selective mutism was already a no-show. This could have partly been because I made it a point to be early so I had time to collect myself, but I’m serious, it’s all Microsoft. My 11 years of guaranteed speech at the old office appear to have carried over seamlessly.
Anyway, Sarah came to pick me up first; it would be another 10 minutes before Hui Jing got there. Naturally, she was the first person I spoke to.
And here I was, at Microsoft Singapore’s new office at Frasers Tower:
The Microsoft logo at the new Singapore office.
Read on for Hui Jing’s reaction to hearing my voice for the first time and, of course, the talks themselves! I know the talks are probably what you came here for but this experience was particularly important to me so I just had to share. Let a disabled person have their limelight, won’t you?
Happy birthday to me, I’m officially 28! This afternoon I got to see Spies in Disguise with some folks from church I’m comfortable with, breaking a 16-year curse of never having a proper even-numbered birthday celebration with anyone. And while I was really scared sitting in the pitch-black cinema for several minutes, when the screen finally came on it did so with no sudden sound effects and I was never startled. I’m pretty glad.
Spies in Disguise poster.
Anyway, elephant in the room — I never got around to making my announcement regarding Stack Overflow, and I’m still not ready to say a word about my life situation in general. I will say that my current break from the site
is intermittent,
is unplanned, and
has very little to do with anything on part of Stack management.
Oh and I still have no plans to step down as moderator, so don’t worry. Things aren’t terrible on my end. In the short term (i.e. sometime this month) I plan to update my battlestation with my biggest incremental update to Radiance yet. Beyond that I will continue to work on the updates to the LEGO Room that I mentioned last year, as well as miscellaneous housekeeping elsewhere on my site.
But in general, I will be taking things slow. I wish I didn’t have to, but right now I have to if I want to keep it together for a little longer, and to be clear it’s still a nice thing to be able to do, not something I’m reluctantly settling for. Talk to you later.
