bon

@jackdaniel @glitzersachen

We're at cross purposes here.

CL-USER> (uiop:directory-pathname-p #p"/tmp/")
T
CL-USER> (uiop:directory-pathname-p #p"/tmp")
NIL

Daniel Kochmański

@bon @glitzersachen

CL-USER> (pathname-directory #P"/tmp/")
(:ABSOLUTE "tmp")

CL-USER> (pathname-directory #P"/tmp")
(:ABSOLUTE)

(roll m3tti)

@glitzersachen #P"/tmp" is not equal to #"/tmp/" or am i wrong

Glitzersachen

(equal #P"/tmp/" #P"/tmp") => NIL

#lisp #abcl

Any idea what happens here? (1) is there a better way to compare path-names? (2) Shouldn't EQUAL structurally compare everything, even path-names?

Hans Hübner

@SDF Wow, I have very fond memories of this machine as it was the first instance of netmbx, our public access Unix system that was later running on a Xenix box. It had a couple of dialin modems connected to it and polled tub aka db0tui6 using UUCP

#N netmbx
#S Altos 68000; Unix SysIII
#O netmbx Berlin
#C Ralf Moritz †
#E mor...@netmbx.uucp
#T +49 30 87 81 24
#P Woerther Str. 36, D-1000 Berlin 20, W. Germany
#L 52 31 N / 13 24 E city
#R
#W mor...@netmbx.uucp; 870530
#
netmbx tub(DAILY)

arXiv cs.CC bot

Evolomino is NP-complete

Andrei V. Nikolaev
arxiv.org/abs/2503.07611 arxiv.org/pdf/2503.07611 arxiv.org/html/2503.07611

arXiv:2503.07611v1 Announce Type: new
Abstract: Evolomino is a pencil-and-paper logic puzzle popularized by a Japanese publisher Nikoli (like Sudoku, Kakuro, Slitherlink, Masyu, and Fillomino). The puzzle's name comes from the fact that the shape of the blocks that the player must draw gradually evolves in the direction of pre-drawn arrows. We prove, by reduction from 3-SAT, that the question of whether there exists at least one solution to the puzzle that satisfies Evolomino's rules is NP-complete. Since our reduction is parsimonious, i.e., it preserves the number of solutions, we also prove that counting the number of solutions to an Evolomino puzzle is #P-complete.

Evolomino is NP-complete

Evolomino is a pencil-and-paper logic puzzle popularized…

arXiv.org
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Ermittlungen gegen Hamburger Polizisten wegen rassistischer Chats - Hubu.de - News & FreeMail

In Hamburg haben die Behörden ein Verfahren gegen mehrere…

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Bruno Amaral

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