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Cosmopolitan C Library: "build-once run-anywhere c without devops"

Purports to create small ~40kb executables that run on Linux, Mac, Windows, FreeBSD, and OpenBSD. In the same binary.

Taking a day off from AoC. Already in the middle of doing something else that's fun, and I don't want to stop :)

(The challenge looks like it will be fun, though.)

AoC 2020 day 15 

51 minutes to try to understand wtf the description was. Really hard to understand.
30 seconds of programming for part 1. Changed 1 line and reran it for part 2, submitted that answer within 20 seconds of part 1. 🤷 Not a fan of today's.

AoC 2020 day 13, part 2, can't solve 

I don't know how to solve this problem. Is there some bit of math knowledge about prime numbers I'm missing? I don't know much about number theory.

I've never had to look at a hint for an AoC day before, and I don't want to start now, so I might drop out.

I don't recognize any of the people on the Merveilles leaderboard who are still participating.

Question: what's the best classic Macintosh programmer's text editor that has multiple undo, and won't hog the memory on an 8mb RAM System 7 or 6 computer?

BBEdit 3 and later are too slow and use too much memory. QUED/M I could only find a demo version of 2.7.2 for, and 3.0 doesn't work in Mini vMac (copy protection shenanigans?)

AoC 2020 Day 12 done. Wasted 15 minutes because I typo'd a variable name 🤦

Most fun AoC 2020 day yet! Day 11 done :) Final time: 00:44:01

Just used plain C today.

"Zen and the Art of Resource Editing, Fourth Edition" foreword, written by... ?!

What was the first (known) maths mistake?

Beer, multiple numbering systems, accounting, civilization

Who are "(anonymous user #375802)" and "(anonymous user #997792)" on the Merveilles AoC private leaderboard?

AoC 2020 Day 10 done! That part of my brain needed dusting off :)

AoC day 9 wasn't exciting, but at least it wasn't tedious :) I did this one as soon as it was posted, using my C++ starter file, but it mostly got in the way, because the problem was simple. Should have just used C for this one 😅

(Days 7 and 8 were the only other two I did right as they were posted, and they were harder problems. I had used C++ on those two days, but not the others.)

AoC 2020 Day 8 was the best so far. Actually fun! And I screwed up and wasted 10 minutes :) Time was 00:41:27

Finished Day 7 a few minutes ago. Finally, they're getting a little bit interesting :) Woo!

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Merveilles is a community project aimed at the establishment of new ways of speaking, seeing and organizing information — A culture that seeks augmentation through the arts of engineering and design. A warm welcome to any like-minded people who feel these ideals resonate with them.