I got on very well with Van der Linden's Deep C Secrets. It's from 1994, so misses out on the newer versions, but aside from that it's aged well, IMHO.
Are you sure it's been open sourced? I'm reasonably sure you've linked to a site offering pirated copies.
There are several links to PDF versions of the book. None of them include either a copyright page or a statement that it's been released as open source.
The author's own website <https://afu.com/> includes errata for the book, but doesn't provide or mention a free copy.
A free sample of the Kindle version of the book does include a copyright notice. A book published in 1994 is not public domain unless it's been explicitly released.
Something that appears to be a legitimate PDF sample (not the while book) is here:
The entire device is tiny: 20mm x 5mm x 5mm approx. It looks to work using a small laser and a lens which focuses the beam about 5mm above the device. The sensor unit contains a photodiode(s), and algorithms count the particulates. It looks to need a heat sink.
There are quite a few examples of very misguided educational strategies.
Whole Language[1] failed so many students, but had significant funding and guru-level support for decades. Brain Gym[2] is regarded as pseudoscience. Even Discovery Learning has had serious detractors.
Liljedahl's "Building Thinking Classrooms" is the current poster child for this. Hugely influential in educational circles, but inconsistent with most of the reproducible research in cognitive science and likely quite deleterious to learning.
Bingo! It's exactly stuff like that that I had in mind. And I also pity the parents whose kids have to endure this nonsense instead of getting a proper education. I mean, you basically have no power. You give your kids to whatever the government's idea is of an education and all you can do is watch helplessly from the side.
Commodore release a new variant of their C64 computer, with a '99%' faithful recreation of the original hardware on an AMD Artix 7 FPGA, along with some more up-to-date specifications. Suitable for retro gaming.
Barber's Adagio for strings, although it gets referenced enough; Khachaturian's Spartacus and Phrygia, especially the brass version; Holst's planets, esp Uranus; Beethoven's 7th; Gorecki's 3rd.
indeed, with an incoming Teams meeting invite, it should be determinable from the sender's context which account should work on the meeting. Instead there is 2 minutes of waiting, and what seems like pot luck with the account.
And good news: it's been open sourced: https://freecomputerbooks.com/Expert-C-Programming-Deep-C-Se... and its well regarded on Hacker News https://hackernewsbooks.com/book/expert-c-programming-deep-c... .
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