Hacker News: kritixilithos

Chick Culling

kritixilithos — Thu, 07 Jan 2021 13:20:40 +0000

Article URL: https://en.wikipedia.org/wiki/Chick_culling

Comments URL: https://news.ycombinator.com/item?id=25670664

Points: 2

# Comments: 0

Symbolic Logic (1897)

kritixilithos — Fri, 29 May 2020 10:58:19 +0000

Article URL: https://www.gutenberg.org/files/28696/28696-h/28696-h.htm

Comments URL: https://news.ycombinator.com/item?id=23348511

Points: 131

# Comments: 25

New comment by kritixilithos in "Problem solving with Unix commands"

kritixilithos — Fri, 15 Feb 2019 07:25:48 +0000

Actually the following is even shorter

  /A/{N;d;}

So all together this gives the following

  ls|sed '/A/{N;d;}'

New comment by kritixilithos in "Problem solving with Unix commands"

kritixilithos — Thu, 14 Feb 2019 19:19:39 +0000

Nicely done using Unix utils. You can have a pure sed solution (save the `ls` invocation) that is much simpler, albeit obscure, that hinges on the fact that every number has a `data.csv` file.

Given a sorted list of these files (through `ls` or otherwise) the following sed code will print out the data files for which A did not succeed on them.

  /data/!N
  /A/d
  P;D

This works on the fact that there exists a data file for all successful and unsuccessful runs on data, so sed simply prints the files for which there does not exist an `A` counterpart.

If you want to only print out the numbers, you can add a substitution or two towards the end.

  /data/!N
  /A/d
  s/^0*\|_.*//g;P;D

Edit: fixed the sed program

Palaeos – Life Through Deep Time

kritixilithos — Wed, 13 Feb 2019 17:57:56 +0000

Article URL: http://palaeos.com/

Comments URL: https://news.ycombinator.com/item?id=19155002

Points: 1

# Comments: 0

New comment by kritixilithos in "Maze-solving algorithm implemented in sed"

kritixilithos — Wed, 09 Jan 2019 17:58:28 +0000

Reached 96 bytes (now where would that last byte be hmmmm). And as you can see, my sed skills aren't as good as yours either :)

Nice meeting a fellow golfer, this was fun :)

New comment by kritixilithos in "Maze-solving algorithm implemented in sed"

kritixilithos — Wed, 09 Jan 2019 08:58:15 +0000

Are you tails? Anyways, thanks for helping me tie with first place :)

New comment by kritixilithos in "Maze-solving algorithm implemented in sed"

kritixilithos — Wed, 09 Jan 2019 06:40:44 +0000

There's even an implementation of lisp in sed :) https://github.com/shinh/sedlisp/

New comment by kritixilithos in "Maze-solving algorithm implemented in sed"

kritixilithos — Tue, 08 Jan 2019 17:08:22 +0000

That's probably because you used BSD sed. Running it on my BSD sed also gives an error, presumably because it thinks the `}` is a part of the label in `binput}`.

However it works fine in GNU sed, and now that you mention it, GNU sed's extensions were not used, like the `-z` flag to slurp all input in one "line" to avoid `:input;$!{N;binput}`.

New comment by kritixilithos in "Kitty – a fast, featureful, GPU based terminal emulator"

kritixilithos — Thu, 06 Sep 2018 10:18:19 +0000

As another user of iTerm2, I am currently using several keyboard mappings from key to key (like Tab being interpreted as Esc), do you know whether Kitty supports that? As far as I can see in the docs, only examples of key to action are shown.

New comment by kritixilithos in "Show HN: I'm 12, learning JS, and wrote Wolfram's cellular automaton in Node"

kritixilithos — Thu, 30 Aug 2018 16:40:46 +0000

Congratulations!

Are you familiar with code golf? If not, I recommend it. In Code Golf, the objective is to complete a programming task in the shortest program possible, measured in bytes. While doing so, you really learn about the nuances of your language and its obscure features.

When I was about your age, I joined the code golf community at Stack Exchange, and since then my JS skills and general programming skills have improved greatly. I hope that you would find it to be useful too.