Riley

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The Nineteenth Byte

The Nineteenth Byte: General discussion for codegolf.stackexc...

Riley

Apr 26, 2018 15:49

Thanks for finding a new trick for me to use :)

Riley

Apr 26, 2018 15:46

@Cowsquack If you don't give a pattern to match it will use the pattern from the previous substitution. I didn't know this feature existed. I only realized it because I happened to run sss123s.

Riley

Apr 26, 2018 15:34

@Cowsquack link?

Riley

Mar 12, 2018 22:32

@seshoumara I have to go for now. Ping me if I can help with anything else.

Riley

Mar 12, 2018 22:25

This will print " y":
echo "; x x y y"|sed -r 's/;(( .+)\2)*$/\2/'

Riley

Mar 12, 2018 22:24

\2 is overwritten the next time (.+) is matched.

Riley

Mar 12, 2018 22:23

The * basically makes this /;(.+)\1(.+)\2/p

Riley

Mar 12, 2018 22:22

g would just allow the whole pattern to match multiple times across the line.

Riley

Mar 12, 2018 22:16

On the second time through (from the * at the end) it captures a new string.

Riley

Mar 12, 2018 22:15

I think it's matching " x" not " x x". it's closer to <string1><string1><string2><string2> I think.

Riley

Mar 12, 2018 22:13

I don't even have time to follow new questions anymore :(

Riley

Mar 12, 2018 22:12

I just got moved to a new project that's behind schedule and have been working a lot of extra hours. I worked my first Saturday last weekend.

Riley

Mar 12, 2018 22:10

@seshoumara Hi to you too. I haven't seen you here in a long time (might be because I'm not very active anymore)

Riley

Mar 12, 2018 22:09

; matches the ";"
your second capture group (.+) matches "<space>x"
the \2 matches "<space>x"
Now we repeat the first capture group but this time match "<space>y" for both
there aren't any characters left, so the $ matches the empty string at the end.
Does that make sense? I haven't used sed in a little while.

Riley

Nov 2, 2017 21:04

@Mr.Xcoder That's definitely one thing it really struggles with

Riley

Nov 2, 2017 20:58

@Mr.Xcoder м is push a.remove(all elements of b), but it seems to only work on strings

Riley

Nov 2, 2017 13:32

@Mr.Xcoder 05AB1E, 5 bytes: žOÃÃÙ

Riley

Oct 26, 2017 22:16

@ASCII-only True. Didn't look at that.

Riley

Oct 26, 2017 22:15

@ASCII-only @Uriel September 11

Riley

Oct 26, 2017 22:13

@Uriel Here's one from June

Riley

Sep 20, 2017 20:11

@Mr.Xcoder 05AB1E, 3 bytes: %_O

Riley

Sep 19, 2017 14:46

@FunkyComputerMan I thought it could go either way (leaning toward looking for help), but 4 others marked it as off topic because it's a stack overflow question. Either way it's now deleted by the author.

Riley

Sep 15, 2017 15:23

@Neil ø and ζ

Riley

Sep 13, 2017 18:25

Swap stacks in 108 bytes (58 byte golf)

The Third Stack

A chat room for discussing the Brain-Flak programming language...

Riley

Dec 19, 2017 22:35

@DJMcMayhem I'm a little late, but ((((([()]))))) is 14 bytes and output 15 bytes.

Riley

Nov 30, 2017 20:33

I'm glad I didn't try to figure out the OEIS sequence or the math behind it. I don't even know what half of the words the title mean.

Riley

Nov 30, 2017 20:30

I was really close to yours with that first one I posted here.

Riley

Nov 30, 2017 20:21

It's surprising how often there are multiple solutions with the same byte count.

Riley

Nov 30, 2017 20:17

Was mine the same as yours?

Riley

Nov 30, 2017 20:15

That was really fun, but I mostly just got lucky.

Riley

Nov 30, 2017 20:09

@WheatWizard I think I got it :)

Riley

Nov 30, 2017 19:52

I did, but I basically had this already.

Riley

Nov 30, 2017 19:46

This prints the right thing, but is 2 bytes too long. tio.run/##SypKzMzTTctJzP7/…

Riley

Nov 30, 2017 19:40

@WheatWizard tio.run/##SypKzMzTTctJzP7/…

Riley

Nov 30, 2017 19:24

That probably means I'm way off though.

Riley

Nov 30, 2017 19:20

@WheatWizard I think I'm really close to getting this. I'm only one off. 10993593 instead of 10993592

Riley

Oct 26, 2017 21:38

This one. No, and I reverse the stack 4 times, but there is too much other stuff going on to do this more than once.

Riley

Oct 26, 2017 21:28

It only saved 2 bytes on one answer. I thought it would have been a lot more than that. It's too bad you can't search for brain-flak code.

Riley

Oct 26, 2017 21:11

I bet I have a bunch of answers that I could improve with that.

Riley

Oct 26, 2017 21:09

@DJMcMayhem I've never seen that trick before. It's genius.

Riley

Sep 15, 2017 13:34

Yeah. Yours is definitely better even if it's a little longer

Riley

Sep 15, 2017 13:33

Yep.

Riley

Sep 15, 2017 13:33

P for pad. It makes the program not a palindrome.

Riley

Sep 15, 2017 13:30

@FunkyComputerMan Here's a 30 byte solution and its reverse

05AB1E - Oasis

For discussing and golfing in 05AB1E and Oasis

Riley

Oct 18, 2017 21:39

I forgot about that too...

Riley

Oct 18, 2017 21:37

What does å do if the first argument is a list? I can only get it to return 0 or [0]

Riley

Oct 18, 2017 21:27

Wait, I don't think that works

Riley

Oct 18, 2017 21:26

Not that I know of, but ʒå} should work.

Riley

Oct 18, 2017 20:51

@MagicOctopusUrn ÅA Does Arithmetic mean

Riley

Oct 12, 2017 13:13

My vote is for 3 also. It only takes one extra byte to get to 1 and 2.