code logs -> 2017 -> Sun, 03 Dec 2017< code.20171202.log - code.20171204.log >
--- Log opened Sun Dec 03 00:00:40 2017
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05:16
<&McMartin>
Woot, on the board!
05:18
< Vornlicious>
Oh right. I knew I forgot something
05:19 * Vornlicious will have to do it when he gets home instead
05:26
<&McMartin>
Though I caught it exactly as it was turning and I still was the 99th to submit a solution. =P
05:27
< Vornlicious>
I was 7th for one of the ones last year.
05:28
<&McMartin>
Yeah, I think I actually placed first once either last year or the year before
05:28
<&McMartin>
I had definitely made it onto the top 100
05:30
<&McMartin>
I strongly suspect problem 3a has some kind of closed-form solution, but.
05:31
<&McMartin>
Brute-forcing it took six milliseconds.
06:06
<&McMartin>
https://bumbershootsoft.wordpress.com/2017/12/03/gtk3-aspect-corrected-image-scaling-with-cairo/
06:23
< Vornlicious>
Six milliseconds? That's 6x as long as allowed!
06:23
< Vornlicious>
>:(
07:01
<&McMartin>
The simulating computer is way weaker than the one in the story.
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15:03
<~Vornicus>
hey it's something I know
15:05
<~Vornicus>
yes there is a closed form.
15:30
<~Vornicus>
there does not appear to be a closed form for b.
15:31
<@macdjord|slep>
Vornicus: Is the closed form based on the fact that each layer of the structure has in its bottom-right corner the square of the length of the sides?
15:31 macdjord|slep is now known as macdjord
15:31
<~Vornicus>
macdjord|slep: it is.
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16:02
<~Vornicus>
fortunately with the closed form of the spiral the rest is relatively simple
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18:33
<&[R]>
TIL bc can work on different bases
18:33
<&[R]>
You can also set the output and input bases seperately.
18:34
<&[R]>
obase=16;ibase=16 to get hexidecimal math
18:37
<@Tamber>
Just remember to swap the output base as the first one, or you could get very weird things happening, iirc.
18:37
<&[R]>
Yup
18:37
<&[R]>
Or set them both at once
18:37
<&[R]>
ibase=obase=16
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19:50 * Degi installs linux on loop0
19:53
< Degi>
O.o live ubuntu can run without the flash drive
19:53
< Degi>
And without a HDD, just in RAM
19:54
< Degi>
Ok, shutting down produces a lot of unable to read errors.
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21:09
<&[R]>
<Degi> O.o live ubuntu can run without the flash drive <-- that's how most liveCDs have worked for a while.
21:09
<&[R]>
LiveDVDs are slightly different
21:16
< Degi>
I was curious whether anything would happen when I simply unplug it but nothing happened.
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22:54
<@Alek>
yeah, those tend to be small enough to run reliably out of memory without poorly impacting running other programs.
22:55
<@Alek>
shutting down, they tend to want to save changed settings and stuff, on flash drives. so that's probably the reason yours had errors.
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23:05
< Degi>
I think those were read errors, as it was running live, ie deleting all changes when shutting down.
23:06
<@Alek>
hm. *shrugs*
23:07
<&[R]>
There are two methods of creating a "live" system
23:07
<&[R]>
First method: load everything into RAM.
23:07
<&[R]>
Simple, easy, and stops requiring the media.
23:08
<&[R]>
Second method: Use UnionFS or similar technology. This still uses a RAM disk, but reads on files that don't exist on the RAM disk are backed by other media (IE: the disk).
23:09
<&[R]>
Bit more complicated, but boots faster, doesn't require the entire disk to be loaded into RAM
23:09
<&[R]>
If you're getting read errors during shutdown of a live system
23:09
<&[R]>
I suspect it's the latter, as you clearly wouldn't have read the shutdown scripts at that point.
23:10
<&[R]>
And any file that you did read might have been unloaded from the file buffers
23:13
<&[R]>
There's also a third, very lazy way to do it: just have the media be the root system directly.
23:13
<&[R]>
Issues with that should be obvious, and you rely quite a bit on the kernel's file caching capabilities when you have slow root media (IE: CD/DVD)
23:14
<&[R]>
I am curious when LiveBDs will be coming out, if at all.
23:16
<&ToxicFrog>
I'm guessing "never", since BD holds 25GB, while a 32GB USD stick costs $10, is smaller, is reusable, and will work on a much wider variety of systems, since everything has USB ports but only a tiny minority of systems have BD drives.
23:17
<&[R]>
Fair enough
23:17
<&[R]>
LiveCD/DVDs were a pain to make anyways
23:22
< Degi>
H
23:22
< Degi>
Hm
23:22
< Degi>
It didn't shut down properly, was stuck at the read errors screen
23:22
< Degi>
Probably failed to read the turn the computer off file.
23:22
<&[R]>
The halt binary probably
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23:23
< Degi_>
IRC really has connectivity issues
23:23
< Degi_>
Or my internet
23:24
<&[R]>
Just you
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23:27
<&[R]>
<savolla> oh okay I found a way guys. eval is working. it's syntax is: eval $command
23:27
<&[R]>
Cringe
23:27
<&[R]>
(Note: they were told to make a function or script instead)
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--- Log closed Mon Dec 04 00:00:42 2017
code logs -> 2017 -> Sun, 03 Dec 2017< code.20171202.log - code.20171204.log >

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