| --- Log opened Sat Dec 21 00:00:30 2013 |
| --- Day changed Sat Dec 21 2013 |
| 00:00 | <&McMartin> | The case I'm thinking of, the standard had the wrong decision. |
| 00:00 | <&McMartin> | (Scope of i in "for (int i = ...)") |
| 00:01 | < RichyB> | Agreed. |
| 00:02 | <&McMartin> | There was a way to force the eventual standard regardless~ |
| 00:03 | <&McMartin> | The most glorious terrible thing |
| 00:03 | <&McMartin> | #define for if (0); else for |
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| 01:01 | <&McMartin> | Oh wow |
| 01:01 | <&McMartin> | That's a first |
| 01:01 | <&McMartin> | I'm actually getting bad_alloc thrown. |
| 01:01 | | * McMartin goes infinite-loop hunting. |
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| 02:00 | | * thalass ponders crontab |
| 02:00 | <&McMartin> | Infinite loop: bagged |
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| 02:07 | <&ToxicFrog> | egrep -m1 'span class="date"' | sed -r 's/[^>]+>([^,]+),.*/\1/; s/([0-9]+)[a-z]*/\1/' | date -I -f - |
| 02:07 | <&ToxicFrog> | I win \o/ |
| 02:12 | < thalass> | heh |
| 02:17 | <~Vornicus> | you find a bunch of things in date-class spans, mangle them, and parse? |
| 02:19 | <&ToxicFrog> | Vornicus: the first thing, actually. |
| 02:19 | <&ToxicFrog> | The mangling is to turn e.g. "29th" into "29" - date(1) understands the latter but not the former. |
| 02:20 | <~Vornicus> | oh, right, the first. okay |
| 02:21 | <&ToxicFrog> | (that's the -m1) |
| 02:31 | <@Tarinaky> | Does anyone recognise the name Funcan? |
| 02:50 | <~Vornicus> | noperoni |
| 02:51 | <@Tarinaky> | They forked one of my things on GitHub and... as far as I am aware you guys are the only ones who really know about it. |
| 03:06 | | * thalass ponders |
| 03:07 | < thalass> | is it possible to set a cronjob to run a program @reboot plus five minutes? |
| 03:08 | < thalass> | I've got my script working to ping snar.co/ip and grab my ip address, then email me if it's changed, and i have cron working to run that python script once a day, but after a power outage it'd take a minute or two for the router to settle down and connect. |
| 03:11 | <&ToxicFrog> | in the script: sleep $((5*60)); # do stuff |
| 03:11 | <&ToxicFrog> | Alternately, make it a systemd job dependent on network.target |
| 03:13 | < thalass> | hrm |
| 03:16 | <&ToxicFrog> | The former is easier, especially if the local network comes up before the router does |
| 03:19 | < thalass> | indeed. I think i'll do that. |
| 03:21 | < thalass> | I need to work on understanding a python script that polls a netgear router for the external IP so i don't have to rely on someone else to keep in touch with my pi |
| 03:30 | | Turaiel is now known as Turaiel[Offline] |
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| 03:57 | <&ToxicFrog> | thalass: what's the underlying goal here? |
| 03:58 | <&ToxicFrog> | I mean, determining your external IP is trivial: |
| 03:58 | <&ToxicFrog> | $ curl -s checkip.dyndns.org | egrep -o '[0-9.]+' |
| 03:58 | <&ToxicFrog> | 75.119.253.164 |
| 03:58 | < thalass> | I'm on the other side of the world, and i'm tinkering with some python scripts in an effort to eventually make a robot out of my pi. Need to make sure i know the right IP to ssh into. |
| 03:59 | <&ToxicFrog> | You could also run one of the dynamic-dns updater daemons on the pi, and then just ssh into rpi.thalass.netmask.ca or similar |
| 04:06 | | * thalass nods |
| 04:08 | < thalass> | At the moment it reads the output from a particular ip returning site, and if it's changed it emails me. Eventually i'd like to automate that so the robot-controlling program on this machine will connect with one click. Though it's probably easier to set up a dynamic dns thing on the Pi's end. |
| 04:12 | | Netsplit *.net <-> *.split quits: Xon, Reiver, @Namegduf, @gnolam, Azash, @io\out_of_spoons, ErikMesoy|sleep, Syka, McMartin, RichyB, (+3 more, use /NETSPLIT to show all of them) |
| 04:13 | | Netsplit over, joins: RichyB, Reiver, &jerith, Syka, @io\out_of_spoons, @gnolam, &McMartin, Azash, @Syloq, ErikMesoy|sleep (+3 more) |
| 04:20 | < thalass> | Considering how easy it seems to be to set up a dynamic dns script thing, i might do that tomorrow. |
| 04:20 | < thalass> | First: Slep |
| 04:20 | | thalass is now known as Thalasleep |
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| 04:47 | | * ToxicFrog finishes a program that will watch the KSP forums for updates to the mods he uses |
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| 08:45 | < AnnoDomini> | How do I make irssi replay logs on startup? I'd like to have backscroll available even if I had to shut down my client for a while. |
| 08:48 | <@froztbyte> | I think there's a perl script for that |
| 08:49 | <@froztbyte> | it'll only replay what you have in logs, though |
| 08:49 | <@froztbyte> | unless I'm misunderstanding how you're connecting |
| 08:53 | < AnnoDomini> | The client is local. I have a BNC (which unfortunately is selective about what it replays). I am logging locally. |
| 09:00 | <@froztbyte> | okay |
| 09:00 | <@froztbyte> | you're basically screwed |
| 09:01 | <@froztbyte> | you either get to replay your logs (which, as I say, I think there's a script for), or you get to fix/replace the BNC |
| 09:01 | | celticminstrel [celticminst@Nightstar-gj43l1.dsl.bell.ca] has quit [[NS] Quit: And lo! The computer falls into a deep sleep, to awake again some other day!] |
| 09:01 | <@froztbyte> | you could look at something like quassel, but that doesn't have a good CLI interface |
| 09:07 | < AnnoDomini> | I would prefer to have a shell running irssi-inna-screen, but I all the shell accounts I have are unstable. |
| 09:14 | < Shiz> | you have a stable BNC but only unstable shell accounts? |
| 09:14 | < Shiz> | (btw irssi/weechat can work in proxy mode, acting like a BNC) |
| 09:15 | < Shiz> | (that was directed to froztbyte) |
| 09:19 | < AnnoDomini> | I did not say this BNC is stable. I've only been using it a couple of days now. |
| 09:20 | <@froztbyte> | Shiz: I know |
| 09:20 | <@froztbyte> | Shiz: I use it |
| 09:21 | <@froztbyte> | (irssi-proxy) |
| 09:21 | <@froztbyte> | http://blog.froztbyte.net/2013/06/my-irc-setup/ |
| 09:21 | < Shiz> | >65 channels |
| 09:21 | < Shiz> | >somewhat ridiculous |
| 09:21 | < Shiz> | pfff, pleb. |
| 09:21 | <@froztbyte> | I actually have things to do |
| 09:22 | <@froztbyte> | so more becomes pointless |
| 09:22 | | * Shiz just runs weechat in a tmux session on his VPS |
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| 17:02 | <&jerith> | So, http://regex.alf.nu/ |
| 17:03 | | * ErikMesoy breaks out the regex cheat sheet, because he cannot regex. |
| 17:03 | <&jerith> | ErikMesoy: I won't help much with the later levels. |
| 17:03 | <&jerith> | *It |
| 17:04 | <&jerith> | I have complete solutions for all of them now, but I suspect some of them aren't optimal. |
| 17:19 | < ErikMesoy> | Indeed, the cheat sheet is not helping me understand negative backreferences on level 5. |
| 17:20 | <&jerith> | Negative lookahead, you mean. |
| 17:21 | | Derakon[AFK] is now known as Derakon |
| 17:22 | < ErikMesoy> | Oh, is that what I'm doing wrong. |
| 17:23 | <&jerith> | JS doesn't have lookbehind. |
| 17:24 | < ErikMesoy> | Welp, it's not helping me with that either. :p |
| 17:25 | <&jerith> | If you want to negate the whole regex you need a start anchor immediately before the start of the lookahead assertion. |
| 17:25 | <&jerith> | So "^(?!<whatever>)". |
| 17:26 | < ErikMesoy> | Shush you, I'm skipping ahead. 174 points on level 6 with cheatsheet. |
| 17:26 | <&jerith> | 174? I only got 171. |
| 17:27 | | * jerith looks for an optimisation. |
| 17:27 | < ErikMesoy> | Maybe I'm cheating more. |
| 17:28 | < ErikMesoy> | Oh, hey, 176. |
| 17:28 | <&jerith> | Yes, you are. But I can too! |
| 17:28 | < ErikMesoy> | At some point you can figure out what I'm doing just by matching "absolutely necessary bits" to "low amount of characters available" and just inferring. |
| 17:28 | < ErikMesoy> | This is how I used to solve a lot of logic puzzles back in the day. :D |
| 17:31 | <&jerith> | My high score is apparently 173 and I don't know how. :-/ |
| 17:31 | <&jerith> | Ah, got it. |
| 17:32 | <&jerith> | 176! \o/ |
| 17:32 | <&jerith> | Thanks. |
| 17:33 | < ErikMesoy> | Level 7 is having me glaring as it starts to approach "demonstrate that regex is turing-complete by doing some math in it", which is not on the cheatsheet. :p |
| 17:35 | <&jerith> | That one I had to look up. |
| 17:35 | <&jerith> | I *almost* got there on my own, though. |
| 17:36 | <@Namegduf> | I just plain don't know how to do negative lookahead without a cheatsheet. |
| 17:46 | < ErikMesoy> | The word "Ternstroemiaceae" on level 8 looks misplaced. |
| 17:46 | < ErikMesoy> | I'm getting only 181 points due to wrongly matching that. |
| 17:48 | < ErikMesoy> | I suppose it's a special case, and I need to write the shortest exception? |
| 17:48 | <&jerith> | You might be working from a bad assumption. |
| 17:49 | < ErikMesoy> | As the level name "Four" suggests, I'm using a regex that checks if a word contains four of the same letter. This correctly matches all the words in the left list, and skips all the words in the right list except Ternstroemiaceae. |
| 17:49 | <&jerith> | (It's more specific than you think.) |
| 17:49 | < ErikMesoy> | Should I be looking for a different pattern, or writing a not-that-word? |
| 17:50 | <&jerith> | Look a little more carefully at the positioning of those letters. |
| 17:51 | < ErikMesoy> | A-ha. "degenerescence" was throwing me off. |
| 17:51 | < ErikMesoy> | 191, then. |
| 17:51 | <&jerith> | :-) |
| 17:51 | <@Namegduf> | Huh. |
| 17:52 | <@Namegduf> | I just got 198 on Four doing the obvious thing. |
| 17:52 | <&jerith> | You're seven characters longer than me. :-) |
| 17:52 | <@Namegduf> | I wonder if I'm cheating. |
| 17:52 | <&jerith> | Well, ErikMesoy is. |
| 17:52 | <&jerith> | Namegduf is the same as me. |
| 17:52 | | * ErikMesoy ups it to 194 with some though. |
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| 17:52 | < ErikMesoy> | +t |
| 17:53 | <&jerith> | Level 9 leaves me unsatisfied, but I don't think there's a better solution than the obvious clunky one. |
| 17:54 | <@Namegduf> | I was wondering about that. |
| 17:54 | | * Namegduf skipped Prime entirely, and cheated horrendeously at abba to do it without negative lookahead and has a low score on it |
| 17:54 | <&jerith> | Prime is very cunning indeed. |
| 17:55 | <@Namegduf> | Hmm. |
| 17:56 | < ErikMesoy> | I have no idea what I'm doing by level 9 so I threw [a-m][c-o][c-p][e-s] at the screen for 70 points. :V |
| 17:57 | <@Namegduf> | I figured out what they mean by "Cheat." on 9. |
| 17:57 | <@Namegduf> | I think. |
| 17:57 | <&jerith> | You can't get away from the negative lookahead on prime. |
| 17:58 | < ErikMesoy> | Prime looks like I should be doing something involving e (which this cheatsheet suggests is like "eval" for regex) and + |
| 17:58 | <@Namegduf> | 181 on Order. |
| 17:58 | <@Namegduf> | That will do. |
| 17:58 | <&jerith> | ErikMesoy: You need backreferences and +. |
| 17:59 | | * Namegduf looks at triples |
| 17:59 | <&jerith> | Namegduf: I only have 168 on level 9. |
| 17:59 | < ErikMesoy> | I'm probably way off track, but it looks to me as though something like e(x(x)+) on Prime will evaluate to "2 or more Xs" and pin down how many "2 or more" is, then I put e and + around that again to get a product. |
| 17:59 | <&jerith> | But I didn't optimise further than removing a couple of unnecessary bits from the obvious. |
| 18:00 | <@Namegduf> | There is actually a fairly simple simpler rule that will work for it. |
| 18:00 | < ErikMesoy> | Oh waaaait. 192 on Order. |
| 18:00 | < ErikMesoy> | Using only regex and a nasty attitude of "maximize points, screw intent". |
| 18:00 | < ErikMesoy> | *Using only cheatsheet and |
| 18:00 | <@Namegduf> | Oh, neat, 194 |
| 18:01 | <@Namegduf> | I just suddenly realised how you probably got 192 and did that too |
| 18:01 | <&jerith> | 198! |
| 18:02 | <@Namegduf> | Whee. |
| 18:02 | < ErikMesoy> | 198 here too. :D |
| 18:02 | <&jerith> | 199! |
| 18:02 | <@Namegduf> | Okay now I have no idea |
| 18:03 | < ErikMesoy> | And having gotten that far, I am officially giving up on the cheatsheet approach. |
| 18:03 | < ErikMesoy> | I think I need to learn actual regex before going to Triples. |
| 18:03 | <@Namegduf> | Triples is throwing me for a loop, yeah. |
| 18:04 | <@Namegduf> | I know regex. It has () and it has | |
| 18:04 | < ErikMesoy> | I also settled for 129 points on Prime. |
| 18:04 | <@Namegduf> | And it is not turing complete damn it |
| 18:04 | < ErikMesoy> | x{33,} |
| 18:05 | < ErikMesoy> | NUMBERS OVER 32 ARE TOTALLY PRIME GUYS |
| 18:05 | <@Namegduf> | Hahaha |
| 18:05 | <&jerith> | Triples is a little tricky, but the basic idea is straightforward. |
| 18:06 | <@Namegduf> | I think I can do it. |
| 18:06 | <&jerith> | The hard bit is turning it int a regex. |
| 18:06 | <@Namegduf> | Well. |
| 18:06 | <@Namegduf> | Maybe. |
| 18:06 | <@Namegduf> | I will try. |
| 18:06 | <&jerith> | *into |
| 18:08 | <&jerith> | I have 488 on Triples. |
| 18:08 | <&ToxicFrog> | Woo, KSP mod update checker totally working |
| 18:08 | <&jerith> | My complete solution was less than a partial solution that left a couple of red marks on my screen. |
| 18:09 | <&jerith> | I had to trim out a few unused bits to beat that. |
| 18:09 | <@Namegduf> | I'm going to leave it at 182 for the moment. |
| 18:10 | < ErikMesoy> | Now that I've given up, what does e do in a regex? |
| 18:10 | <&jerith> | ErikMesoy: Just "e" matches a literal "e". |
| 18:11 | < ErikMesoy> | This sheet has a box saying "Regular expressions pattern modifiers" where "e" is indicated with "Evaluate replacement". (and "U" with "Ungreedy pattern".) Google finds me very esoteric discussions of the "why isn't this working" variety. What is this? |
| 18:11 | < ErikMesoy> | The sheet I'm looking at is http://www.cheatography.com/davechild/cheat-sheets/regular-expressions/ |
| 18:13 | <&jerith> | Oh, I see. |
| 18:13 | <@Namegduf> | 12 is just taking the piss. |
| 18:13 | <@Namegduf> | It's the problem that regexes aren't able to do but these things can do because they're not actually regular expressions. |
| 18:13 | <&jerith> | Those are modifiers for the engine's behaviour. |
| 18:13 | <&jerith> | You can't actually use them in a regex. |
| 18:13 | <@Namegduf> | The most famous one, rather. |
| 18:14 | <&jerith> | Namegduf: It works here because you're solving a limited subset of the problem space. |
| 18:15 | <@Namegduf> | Well, you can do it boundedly by writing something insanely long. |
| 18:15 | <&jerith> | Prime is the one that only works because regexes cease to be regular when you have backreferences. |
| 18:16 | <@Namegduf> | You can solve any of them by simply enumerating the possible matches. |
| 18:17 | <&jerith> | Namegduf: My solution for 12 is 34 characters long. |
| 18:18 | <&jerith> | Hardly "insanely long". :-) |
| 18:18 | <@Namegduf> | When I said "do it boundedly" I meant "do it correctly, within bounds" |
| 18:27 | <&jerith> | Apart from start and end anchors, my solution for 12 ues five distinct characters. |
| 18:28 | <&jerith> | The whole thing is in basic regex. |
| 18:29 | <@Namegduf> | Yes, because it cheats. |
| 18:29 | < Syka> | the last thing i care about regexps doing is cheating |
| 18:29 | <@Namegduf> | I didn't say it didn't happen to have a short cheat for the specific things it had. |
| 18:29 | < Syka> | i expect them to kneecap me, that's my worry |
| 18:29 | <&jerith> | Namegduf: It only cheats because the length of the input is finite. |
| 18:30 | <@Namegduf> | No, it cheats because it is a very specific set of finite inputs. |
| 18:30 | <&jerith> | Also, it's a much simpler problem when there's nothing between the brackets you're matching. |
| 18:31 | <&jerith> | My solution, except for a tiny optimisation that saves me three characters, is completely general up to a certain nesting depth. |
| 18:31 | <@Namegduf> | I said that it was "taking the piss" by featuring the ur-example of the thing actual regular expressions cannot do, and that there was a very long solution to it for all pairs of brackets nested up to a given n levels which gets very long for higher depths. |
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| 21:39 | < AnnoDomini> | Hmm. Anyone here have an account on insomnia247.nl? |
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| 22:17 | < ErikMesoy> | not me |
| 22:18 | < AnnoDomini> | Using a BNC is really not for me. It's too confusing about backscrolls. |
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| --- Log closed Sun Dec 22 00:00:55 2013 |