I came across a rather peculiar implementation of a string repeat function for JavaScript.

There's a built-in for this since ES2015, and prior to that, the following was a common idom:

> str = "x"
> count = 3
> out = (new Array(count + 1).join(str)

But, an MDN contributor thought - we can optimize this! Can you figure out how and why it works?

👉 codepen.io/Krinkle/pen/abmrLdz

fun, uspol 

Tom Hanks, on soundcheck at today's "Celebrating America" post-inauguration event.

check, check, Sibilance.


Nice recall to his Aerosmith SNL sketch 🤘

Wikipedia.org and sister projects, by operating system after December 2020:

* 30.4%: Android
* 27.0%: Windows
* 25.6%: iOS
* (8.7%: Other)
* 7.0%: macOS
* 0.8%: Linux (incl. Ubuntu)
* 0.5%: Chrome OS

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Wikipedia.org and sister projects, stats for December 2020:

* 49%: Chrome, Chrome Mobile
* 26%: Safari, Mobile Safari
* 4.9%: Firefox, Firefox Mobile
* 2.7%: Samsung Internet
* 2.3%: Edge
* 2.0%: Chrome Mobile iOS
* 1.9%: Google app
* 0.91%: Internet Explorer
* 0.76%: Opera

100% = 16.4 billion page views (desktop+mobile web, no apps, no bots)

"Profiling live Wikipedia traffic with near-zero overhead"

> Each day of Wikipedia backend traffic yields about 3 million stack trace samples, as collected by Excimer, a new a low-overhead sampling profiler for PHP.

I wrote all about it in this year's Performance Calendar:

👉 calendar.perfplanet.com/2020/p

By operating system for November 2020:

* 29.8%: Android
* 27.7%: Windows
* 25.0%: iOS
* (9.8%: Other)
* 6.8%: macOS
* 0.5%: Linux (incl. Ubuntu)
* 0.4%: Chrome OS


* Explore the data:
** analytics.wikimedia.org/dashbo
** Query on stats.wikimedia.org: w.wiki/ozJ

* Raw data:
** analytics.wikimedia.org/publis
** wikitech.wikimedia.org/wiki/An

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Wikipedia.org and sister project stats for November 2020:

* 49%: Chrome, Chrome Mobile
* 24%: Safari, Mobile Safari
* 5.0%: Firefox, Firefox Mobile
* 2.6%: Samsung Internet
* 2.4%: Edge
* 2.2%: Google app
* 1.8%: Chrome Mobile iOS
* 1.1%: Internet Explorer
* 0.77%: Opera

100% = 16.7 billion page views (desktop+mobile web, no apps, no bots)

A collegue of mine ran into this some interesting code behaviour today. I encountered this before, but didn't realize it was still a thing. Fun times!

Can you guess what caused the string to become an integer?

👉 3v4l.org/odIiW

"How life works in Antarctica" by Wendover

Mini-docu on how it is to live (and work) at our South Pole. Some takeaways:

- Network speeds are limited to 38 kbit/s (!) most of the day. Almost on par with 90s telephone dial-up.
- Rescue operations are harder than for the ISS in outer space. They're cut off 9 months a year.
- It remains the only covid-free continent.

Nebula: watchnebula.com/videos/wendove
YT: youtu.be/ZAEydOjNWyQ

"Europe vs USA Broadband Performance (2020 Report)"

From FairInternetReport:
> American internet users have had a very good 2020: […] median Internet speeds doubled [from] 17.34mbps in 2019 to 33.16mbps in 2020 […] increased 91%.
> US average broadband speeds overtook western EU countries […] for the first time in 5 years.
> The US stills lags behind many European and developed nations […]
> Italy continues to have the worst internet in the EU, […]


Wikipedia.org and sister project stats for October 2020:

* 49%: Chrome, Chrome Mobile
* 24%: Safari, Mobile Safari
* 5.1%: Firefox, Firefox Mobile
* 2.6%: Samsung Internet
* 2.3%: Edge
* 2.2%: Google app
* 1.7%: Chrome Mobile iOS
* 1.3%: Internet Explorer

100% = 16.3 billion page views (desktop+mobile web, non-spider/bot)

Fiddling with Wikidata to get a list of Wikipedia articles about known persons that have died of covid, sorted by date and age.


Celeb death 

Sean Connery died in his sleep last night, at the age of 90 (1930-2020). The end of an era. Farewell!


As of 2018, the US birth rate is approximately 0.455 Miles per hour.

Data source: ssa.gov/oact/babynames/limits.
H/T 🐦️ lunasorcery

wind turbine fail, 30s video 

Took place in a suburban area near Djursland, Denmark in 2008.

courtesy of YouTube recommending this 12 year old video to everyone today: youtu.be/oAWMpxX60KM

"Making of a Myth", behind Kubrick's 2001 A Space Odyssey.

This excerpt is about how they made the pan float, in 1968, without Chroma-key technology. How did Kubrick's FX team do it?

Full Channel 4 documentary:

This aspect was also covered in the 7-part "How Kubrick made 2001" series:

From Liam O:

> A year ago, nathanwright120 made an edit to [to] indicates that a building in Melbourne had 212 floors instead of 2. […] other edits seem legit, so it appears to have been a typo.
> The error was corrected by another user, BUT, in the interim, Microsoft took an export [for] Flight Simulator 2020.
> The result... this incredible monolith

Further reporting by Igor Bonifacic for Engadget:


🐦 twitter.com/liamosaur/status/1

On January 15th, Wikipedia flipped the switch to discard invalid prefixes on its network transit links.

Article by Arzhel Younsi (Net Ops at Wikimedia Foundation).


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