00:00:34 <lambdabot>  It could refer to either ‘L.z’, defined at L.hs:154:1 
00:00:54 <lambdabot>  It could refer to either ‘L.q’, defined at L.hs:152:1 
00:01:01 <vanila> > let x{- quine -}x=x++show x in x"let x{- quine -}x=x++show x in x" 
00:01:03 <lambdabot>  "let x{- quine -}x=x++show x in x\"let x{- quine -}x=x++show x in x\"" 
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00:01:57 <int-e> yes, *of course* that module defines all single letter identifiers. 
00:02:08 <oerjan> :t (a,b,c,d,e,f,g,h,i,j,k,l,m,n,o,p,q,r,s,t,u,v,w,x,y,z) 
00:02:08 <lambdabot> (FromExpr t2, FromExpr t1, FromExpr t) => (Expr, Expr, Expr, Expr, Expr, t, t1, t2, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr, Expr) 
00:02:30 <int-e> oerjan: https://hackage.haskell.org/package/simple-reflect-0.3.2/docs/Debug-SimpleReflect-Vars.html 
00:02:39 <int-e> oerjan: I found that ;-) 
00:02:40 <elliott> [doesn't send a message, gets no response] 
00:02:51 <elliott> I'm executing it consatntly 
00:02:54 <vanila> only real quines like mine count 
00:05:08 <vanila> ^ul (:aSS(anewkindofquine)):aSS(anewkindofquine) 
00:05:08 <fungot> (:aSS(anewkindofquine)):aSS(anewkindofquine) 
00:06:08 <vanila> i thought it was funny 
00:07:13 <int-e> vanila: now do it with rule 110 
00:08:01 <oerjan> how do you define quines so they make sense in rule 110 
00:08:05 <elliott> it's not a new kind of anything if you do it yourself, int-e 
00:08:10 <elliott> you have to get your employees to do it 
00:08:31 <int-e> oerjan: I don't know. That's part of the fun of a new kind of science. 
00:08:51 <int-e> elliott: I'm trying to get vanila do it at no pay at all. ;-) 
00:09:46 <lambdabot> Functor f => f (a -> b) -> a -> f b 
00:11:33 <oerjan> oh wait it doesn't do join hmph 
00:13:48 <oerjan> > text.(<**>[id,show])$return"text.(<**>[id,show])$return" 
00:13:49 <lambdabot>  Couldn't match type ‘[GHC.Types.Char]’ with ‘GHC.Types.Char’ 
00:13:49 <lambdabot>  Expected type: GHC.Types.Char -> GHC.Types.Char 
00:13:49 <lambdabot>    Actual type: GHC.Types.Char -> GHC.Base.StringCouldn't match expected type... 
00:14:34 <lambdabot> It is forever etched in my memory. 
00:15:58 <oerjan> > text.ap[id,show]$return"text.ap[id,show]$return" 
00:15:59 <lambdabot>  Couldn't match type ‘[GHC.Types.Char]’ with ‘GHC.Types.Char’ 
00:16:00 <lambdabot>  Expected type: GHC.Types.Char -> GHC.Types.Char 
00:16:00 <lambdabot>    Actual type: GHC.Types.Char -> GHC.Base.StringCouldn't match expected type... 
00:16:07 <shachaf> oerjan: What are you trying to do here? 
00:16:44 <shachaf> what's wrong with the classic ap(++)show 
00:17:03 <vanila> ^ul (:aS(:^S^:)Sa:):^S^:(:aS(:^S^:)Sa:) 
00:17:04 <fungot> (:aS(:^S^:)Sa:):^S^:(:aS(:^S^:)Sa:) 
00:17:30 <oerjan> > text.(>>=[id,show])$return"text.(>>=[id,show])$return" 
00:17:32 <lambdabot>  Couldn't match expected type ‘[GHC.Types.Char] -> [GHC.Types.Char]’ 
00:17:32 <lambdabot>              with actual type ‘[GHC.Base.String -> GHC.Base.String]’ 
00:17:37 <int-e> > text$ap(++)show"> text$ap(++)show" 
00:17:38 <lambdabot>  > text$ap(++)show"> text$ap(++)show" 
00:17:47 <vanila> stop makign haskell quines!!! 
00:18:06 <shachaf> Better unset that q thing. 
00:18:21 <shachaf> wouldn't want any bot loops 
00:18:39 <shachaf> oerjan: whoa, does http://slbkbs.org/serp.html work in IE? 
00:18:50 <shachaf> does IE even have incremental search? 
00:19:07 <shachaf> int-e: there's no such command as @where-loud hth 
00:19:56 <oerjan> shachaf: it worked for me yes 
00:20:07 <shachaf> oerjan: does backspace work 
00:20:38 <int-e> shachaf: I just found it hard to believe that this module shouldn't have a command for undefining things. But where+ itself does the job, apparently. 
00:20:53 <lambdabot> I know nothing about somethingelse. 
00:21:00 <vanila> oerjan, how about a quine in underlambda 
00:21:01 <shachaf> int-e: fsvo does the job hth 
00:21:07 <int-e> shachaf: hmm. right. 
00:21:17 <int-e> @where+ q I know nothing about q. 
00:21:20 <shachaf> eventually it'll turn out that "it worked" meant oerjan successfully got a blank page, and "backspace worked" meant that oerjan was able to go back to the previous page by pressing backspace 
00:21:21 <int-e> well, we can fake it. 
00:21:30 <vanila> How about a quine in :()^ 
00:21:31 <oerjan> vanila: ais523 has never released underlambda so i cannot make a quine in it hth 
00:21:51 <vanila> step1 prove :()^ turing complete, step2 apply quine theory 
00:22:06 <int-e> TC is not enough to allow quines 
00:22:11 <shachaf> turing completeness is neither sufficient nor necessary hth 
00:22:27 <int-e> (you may have to do some trivial transcoding from output to the language) 
00:22:40 <oerjan> silly shachaf, iirc when i tested yesterday i wrote "hi there" then backspaced over it 
00:22:52 <vanila> step1 write a quine in :()^ 
00:23:06 <oerjan> vanila: you need output to have a quine, at a minimum, hth 
00:23:12 <shachaf> i have an alternate version that uses css to render text rather than a canvas 
00:23:26 <shachaf> do you know what a headache it is to render text on a web page that isn't searchable with Ctrl-F hth 
00:23:34 <oerjan> i think a quine without a and S in underload is impossible 
00:23:51 <elliott> oerjan: you could define an output encoding for the resulting stack 
00:23:57 <int-e> hmm, searching the wiki for :()^ didn't help 
00:24:00 <vanila> Has anyone here ever written a quine? 
00:24:08 <oerjan> int-e: Underload section 
00:24:09 <vanila> int-e, it's on the underload page 
00:24:12 <vanila> http://esolangs.org/wiki/Underload#Quine 
00:24:58 <elliott> it feels like if ():^ is TC then toothpaste must be too 
00:25:51 <elliott> does that mean it can act as any one of whitening toothpaste, sensitive teeth and gums toothpaste, minty-fresh breath toothpaste, ... 
00:26:18 <elliott> you brush your teeth with it and it just coalesces into the original solid 
00:27:18 <oerjan> vanila: i wrote the quine in /// and the one in glass, for example 
00:28:12 <oerjan> it's essentially based on the same principles as the looping, just adapted to print instead of run 
00:29:20 <oerjan> it uses a slightly different encoding than the BCT interpreter because i couldn't avoid string clashes with that one 
00:29:32 <oerjan> (basically, one more initial / in tokens) 
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00:30:52 <oerjan> elliott: the toothpaste i buy is "total" protection hth 
00:31:11 <oerjan> it probably doesn't do all those, though. 
00:31:28 <elliott> but total things can't be TC [conor mcbride swoops down and punches me] 
00:31:50 <oerjan> elliott is now entrapped in a partiality monad 
00:31:59 <vanila> total languages can be totally cool 
00:32:17 <elliott> I'm partial to horrible jokes, yes! 
00:32:32 <glguy> I like that I'm not being charged a subscription fee for this comedy in today's episode ^_^ 
00:32:44 <oerjan> so will ghc 7.12 be when haskell _really_ becomes dependent 
00:33:58 <oerjan> glguy: i suspect you are mischanneling but i hope that's actually a comment on our current topic 
00:34:23 <glguy> Nope, just watching the discussion, hth 
00:34:27 <elliott> this channel is like #haskell-crap, which is why I love it 
00:34:59 <elliott> glguy: btw you mean you're using this channel without a subscription? 
00:35:10 <elliott> /msg chanserv op #esoteric 
00:35:17 <oerjan> elliott: there doesn't seem to be a #haskell-crap, should we get it to redirect here twh 
00:35:22 <glguy> I got a splitter from a neighbor's service 
00:36:36 <elliott> oerjan: the last thing we need is even more haskellers in here 
00:37:26 <glguy> I can stick to JS or C or not talking or whatever 
00:37:42 <elliott> don't worry the epidemic is unstoppable already 
00:38:29 <elliott> there's like 20 people in here who know haskell 
00:38:33 <oerjan> today on wikipedia: fuck 
00:38:53 <oerjan> elliott: some of them learned about haskell here, mind you 
00:39:16 <oerjan> aren't you one of them btw 
00:39:43 <vanila> haskell isn't as good at quines as underloab 
00:39:47 <elliott> I am as tainted as they come 
00:40:04 <vanila> can you make a language based on loebs theorme 
00:40:13 <oerjan> i knew haskell before i came to this channel, although one of the first programs i wrote was an unlambda interpreter, which as i recall is an ancestor of the one in lambdabot  
00:40:34 <int-e> `` echo 28752pP | dc 
00:40:44 <int-e> `` echo 28752pP | dc | dc 
00:41:02 <vanila> that's interesting int-e  
00:42:14 <int-e> `` echo '[91Pp93Pp]91Pp93Pp' | dc 
00:42:24 <int-e> `` echo '[91Pp93Pp]91Pp93Pp' | dc | dc 
00:42:49 <int-e> `` echo '[91PdP93Pp]91PdP93Pp' | dc | dc 
00:43:15 <oerjan> `` echo '[91PdP93Pp]91PdP93Pp' | cat | cat 
00:43:43 <vanila> `` echo `echo cat` | `echo cat` 
00:44:08 <vanila> maybe you could implement underload as unix programs 
00:44:24 <vanila> what sets of unix pipes make a TC language? 
00:45:07 <oerjan> but unix pipes aren't very stack based 
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00:49:14 <oerjan> you could probably make something analogous that treated stdin as a stack of lines 
00:49:36 <vanila> its a shame i cant find a symmetrical underload quine 
00:50:03 <oerjan> that has been done. isn't there one on the wiki page? 
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00:57:12 <int-e> `` echo '1xd[[1xd]P91PP93P[dx1]PqP[1xd]P39pP19P[dx1]]dx1' | dc 
00:57:47 <int-e> (hmm ... spot the mistake) 
00:58:05 <HackEgo> 1xd[[1xd]P91PP93P[dx1]PqP[1xd]P39pP19P[dx1]]dx1 
00:58:48 <oerjan> int-e: there isn't one? 
00:59:04 <int-e> it's not symmetric 
01:00:42 <int-e> (no big deal, since code after the 'q' is not executed.) 
01:11:42 <int-e> > reverse "1xd[[1xd]P91PP93P[dx1]PqP[1xd]P39pP19P[dx1]]dx1" 
01:11:43 <lambdabot>  "1xd]]1xd[P91Pp93P]dx1[PqP]1xd[P39PP19P]dx1[[dx1" 
01:16:56 <FreeFull> What if you flip the brackets? 
01:18:32 <elliott> that's prohibited by the geneva convention 
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02:10:17 <int-e> `` printf "%x" 32000428082400023 
02:12:15 <int-e> I'm wondering if there is a non-brute-force way of finding such numbers (which are palindromic in several bases, and large compared to the bases) 
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02:14:50 <int-e> oh and I guess the bases b, c should not satisfy any relation of the form b^k = c^l for k,l>0. 
02:18:28 <lifthrasiir> int-e: is there a brute-forced list for that? 
02:19:39 <int-e> lifthrasiir: I just wrote a toy program that finds all 17-digit palindromic numbers (base 10) that are also palindromic in base 16. This is the complete list: 32000428082400023 / 32633196169133623 / 64634327472343646 / 70667820502876607 
02:20:25 <shachaf> How many digits are they in base 16? 
02:21:41 <shachaf> you could totally golf that down even including the 0x 
02:22:13 <shachaf> the answer I was looking for was 11, obviously 
02:23:45 <int-e> I guess I could encode it as a SAT problem and watch minisat fail on it. (or be surprised that it actually manages.) 
02:23:55 <oerjan> and here my first thought was "he's been checking upwards from 32000000000000000, and that was the first number he found" 
02:24:22 <lifthrasiir> my stupid search script (never optimized) gives: 1-9 11 353 626 787 979 1991 3003 39593 41514 90209 94049 96369 98689 333333 512215 666666 749947 845548 1612161 2485842 5614165 6487846 9616169 67433476 90999909 94355349 94544549 119919911 161131161 190080091 241090142 247969742 (no 10-digit number here) 
02:24:35 <lifthrasiir> (cont'd) 26896769862 28586268582 28779897782 30144644103 32442924423 39762526793 43836363834 45961216954 51113531115 56702120765 390189981093 1278169618721 1631645461361 1806872786081 2424058504242 2692667662962 3405684865043 6694367634966 7888195918887 14315822851341 17262755726271 45113388331154 397922151229793 509538666835905 522013020310225 816346555643618 1668739779378661 5099347667439905 
02:24:58 <int-e> oerjan: nah, I enumerated the 10^9 decimal palindromes. (I should've enumerated the 16^7 hexadecimal palindromes of length 14 instead) 
02:25:12 <lifthrasiir> 5099347667439905 has 16 decimal digits, so the next would be 32000428082400023 (not yet found) 
02:26:23 <oerjan> int-e: hm it's because 14 is even and 17 is odd 
02:26:36 <oerjan> otherwise it shouldn't matter which base you start with 
02:27:02 <oerjan> approximately sqrt(n) numbers below anyway 
02:27:34 <lifthrasiir> for the purpose of brute-force search, building decimal numbers is better (trivial hexadecimal conversion) 
02:28:49 <oerjan> hm what counts for more, the 4*more to test or the harder conversion 
02:28:50 <lifthrasiir> 373019805508910373 is the first 18-digit double palindrome. 
02:30:05 <lifthrasiir> aaand of course there is an OEIS entry: http://oeis.org/A029731 
02:32:22 <int-e> so are there infinitely many of those numbers (heuristically, yes, and I expect a proof is way out of reach) 
02:32:54 <oerjan> so if approximately sqrt(n) numbers below n are palindromic in one base, hm that's 1/sqrt(n) of all so if were independent there should only be a finite number palindromic in two... 
02:33:32 <int-e> (1/sqrt(n))^2 is 1/n and that series diverges. 
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02:35:32 <oerjan> hm i don't quite trust that heuristic if changing from local to global makes that much difference... 
02:35:53 <int-e> what do you mean by local and global? 
02:37:11 <oerjan> ok between n^2 and (n+1)^2 there should be 1 palindrome 
02:38:53 <int-e> Way too imprecise for a proof. 
02:39:46 <oerjan> ok so say between 1000000 and 1000999 there is one palindrome 
02:40:07 <oerjan> that's 1000^2 to 1000^2 + 2*1000 - 1 
02:40:56 <oerjan> so the density is 1/(2*sqrt(n)-1) on that interval 
02:41:55 <oerjan> i guess i am getting approximately theta(1/sqrt(n)) anyway 
02:43:05 <oerjan> otoh this means we should expect only finitely many that are palindromes in _three_ distinct bases, iirc 
02:43:23 <oerjan> (that sum (1/n^s) converges for s > 1) 
02:43:47 <oerjan> which i'm not entirely sure of 
02:44:29 <int-e> there are b^k palindromes in [b^(2k-1),b^(2k)-1] and in [b^(2k),b^(2k+1)-1]. 
02:45:05 <int-e> to me that seems easier than arguing about n^2 and (n+1)^2. 
02:46:28 <int-e> for three or more, yes 
02:46:37 <oerjan> https://en.wikipedia.org/wiki/Riemann_zeta_function 
02:47:20 <int-e> (that sum (1/n^s) converges for s > 1) <-- I didn't recognize this as a question. 
02:48:01 <oerjan> it was turning into a question while i was writing it 
02:48:45 <shachaf> oerjan: that's why question marks go at the end of sentences hth 
02:48:53 <int-e> did you notice that I messed up ... I should write, there are b^k palindromes in [b^(2k-2),b^(2k-1)-1] and in [b^(2k-1),b^(2k)-1]. 
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02:49:09 <oerjan> shachaf: technically it only turned into a question after i'd pressed return hth 
02:49:37 <shachaf> does that still count as writing it twh 
02:49:41 <oerjan> no i didn't, i was too lazy to check that :P 
02:49:55 <int-e> and by b^k, I mean (b-1)*b^(k-1), thanks to a leading digit that should not be zero. 
02:50:17 <int-e> but none of this changes the conclusion. 
02:51:03 <oerjan> anyway, if those two-base palindromes are distributed approximately as you'd expect from taking product of densities then that might indicate there _isn't_ a non-brute force method, vaguely... 
02:52:02 <int-e> oerjan: So, even simpler, there are 2*b^k-1 palindroms less than b^2k, since you can take every number less than b^k and append it to its reverse, possibly merging the center digits. The -1 term accounts for 0 = 00. 
02:52:35 <boily> shachaf: bonshachafoir. 
02:52:49 <oerjan> int-e: i was trying to use a smaller interval to prevent that local/global confusion i was sensing 
02:53:20 <int-e> oerjan: I see. Well, you needn't worry :) 
02:56:39 <oerjan> from 1000000 to 9999999 there are 9000 palindromes... 
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02:57:43 <int-e> Though the n^2/(n+1)^2 idea doesn't quite work. The difference between 100001 101101 is 1100, about sqrt(10) times larger than sqrt(100001). 
02:58:12 <oerjan> that was too short an interval 
02:58:25 <oerjan> i think a single set of digit lengths is better 
02:58:29 <int-e> n^2 / (n+b)^2 will work. 
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03:08:20 <oerjan> > let dens b x = 1/b^ceiling(logBase b x / 2) in dens 10 1000001 
03:08:47 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 1000001 
03:08:53 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 10000001 
03:09:25 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 1000000 
03:09:40 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 1000000 * 9000000 
03:09:49 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 10000000 * 90000000 
03:10:05 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 999999 
03:10:16 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 9999999 
03:10:27 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in dens 10 10000000 
03:11:15 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in sum [dens 10 n * dens 16 n | n <- [100..10000]] 
03:11:29 <int-e> so 1/sqrt(bn) <= dens b n <= sqrt(b/n)? 
03:12:13 <oerjan> well that's not too far from the actual number of double-palindromes between 100 and 10000 
03:12:58 <oerjan> int-e: i'm just trying to make it give the right density for each number of digits 
03:13:29 <oerjan> > let dens b x = 1/b^round(logBase b x / 2) in sum [dens 10 n * dens 16 n | n <- [100..100000]] 
03:14:08 <oerjan> oh hm there's a surprising number of them in the 90 thousands :P 
03:14:36 <oerjan> oh it's not too far away anyhow 
03:23:28 * oerjan looks at freefall and wonders what gimu means 
03:34:10 <int-e> hmm. perhaps http://www.eudict.com/?lang=japeng&word=gimu 
03:34:17 <int-e> but it's a wild guess. 
03:38:13 <oerjan> it does seem to fit at least 
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04:39:05 <CrazyM4n> Are APLs even popular anymore? 
04:39:27 <CrazyM4n> I've been thinking about ideas for them  
04:40:50 <CrazyM4n> What APLs do people use, anyway? J, K, and APL are the only ones I know of. 
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05:35:26 <zzo38> Let's make in Magic: the Gathering cards, a artifact card, its effect is:   {X}, {T}: Change this card's mana cost to the mana you paid for this ability. 
05:36:38 <zzo38> You can have another ability to change the name of this card to any other card on the field. 
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05:54:36 <zzo38> Is there any card that allows you to gain life instead of drawing cards? 
06:08:12 <shachaf> zzo38: What would that card's mana cost be? 
06:08:28 <shachaf> I don't think there's a card with that ability. It would probably not be very popular. 
06:14:40 <zzo38> shachaf: If you draft it together with a card that is in combination become useful then you might use it. I don't know what its mana cost would be originally, maybe just {0} or {1} is enough. 
06:15:50 <shachaf> There is http://magiccards.info/query?q=!Scornful+Egotist which maybe has some similar uses. 
06:17:37 <shachaf> I don't know what it would be useful for. 
06:17:57 <shachaf> I guess you mean "this permanent's mana cost". 
06:18:19 <zzo38> Yes I mean it; even if a token copy is made it can still work. 
06:21:34 <glguy> I've only played a bit of Magic. What's the point of this Scornful Egotist? 
06:22:08 <zzo38> You can draft multiple sets if that would help! Usually only one set is drafted but I have played once where two sets are drafted. 
06:24:35 <shachaf> glguy: I never played in that block, but as I understand it there were a bunch of cards that cared about having permanents with a high converted mana cost. 
06:24:53 <shachaf> So this was a cheap roundabout way to get some of those effects. 
06:25:55 <shachaf> http://magiccards.info/query?q=e:scg/en+o:%22converted+mana+cost%22 
06:25:58 <glguy> http://magiccards.info/sc/en/49.html 
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06:28:24 <glguy> "Once I was human. Now I am far more." -- but apparently there was an errata that stated the Scornful Egotist was still human 
06:30:01 <glguy> Then he would have said. I am human. Also I am far more. 
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06:31:57 <shachaf> Human and Wizard are incomparable 
06:32:41 <glguy> Don't tell me, tell him! 
06:33:12 <shachaf> imo so annoying that Soldier tokens aren't human 
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06:37:06 <zzo38> Why is it so annoying? 
06:37:19 <zzo38> Maybe some soldiers will not be human soldiers? 
06:37:33 <shachaf> Because I'd always mix them up. 
06:40:31 <zzo38> I made up a card for Pokemon card game which is called HAND FIXER KIT and its effect is: Put all cards from opponent's trash into his hand. 
06:41:41 <glguy> I used to have the first couple sets of pokemon cards... and then my brother traded them away for some hockey cards 
06:42:31 <shachaf> i,i traded some hokey cards for some hockey cards 
06:47:13 <zzo38> Assume it is your turn after you have drawn a card you have three cards in your hand; in play opponent has only CHANSEY [Lv.55] with no damage and five energy cards attached; you have KADABRA [Lv.39], active, with 2 damage, no energy, and is sleeping, and you have only GASTLY [Lv.8] on bench with 1 energy and 2 damage; opponent has 3 cards remaining in draw pile and 1 side card remaining; you have no cards in draw pile and 5 side cards remaining... 
06:48:24 <zzo38> Now, you can play HAND FIXER KIT and opponent is going to scream like "!!???!!!?!?!???!?!!!!!????!!?!????!!!!!?!?!?!!?!!!!??????!!!??!?!?!??!?!?!!!!!!???!?!!?!?!?!!!?!????!?!??!??!!??!?!?!?!?!?!!!!?!???????!!!!!??!?!!!!?????" 
06:49:03 <zzo38> What do *you* think??? 
06:49:23 <shachaf> I don't think my opponent is going to scream like that. 
06:49:36 <shachaf> But I don't know the rules of Pokeman card game; maybe it is required. 
06:49:47 <zzo38> No, it isn't required. 
06:51:21 <glguy> You should probably add that as a requirement to your card 
06:52:07 <glguy> seems like it'd make it even more complicated and more fun :) 
06:52:31 <glguy> Or was that long list of assumptions just a scenario 
06:52:43 <glguy> and not the pre-req? 
06:52:48 <zzo38> That long list of assumptions is just a scenario. 
06:53:01 <zzo38> The effect of HAND FIXER KIT is only "Put all cards from opponent's trash into his hand" 
06:54:28 <zzo38> He has exactly fifteen trainer cards in his trash. In your hand you have DEVOLUTION SPRAY and HAUNTER [Lv.26]. 
06:54:36 <zzo38> Now what do you believe? 
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07:46:50 <Sgeo> o.O http://techcrunch.com/2014/11/19/mozilla-partners-with-yahoo-which-will-become-the-default-search-engine-in-firefox-next-month/ 
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08:29:25 <zzo38> I do not expect changing the default searching engine is anything wrong; regardless what it is by default, you can easily change it to whatever one you want, or add your own 
09:10:17 <J_Arcane_> The Google-Firefox deal was big money for both. 
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09:24:13 <J_Arcane_> Helpful commit message of the day: "zip and zipwith. These work exactly as you'd expect if you've used Haskell. You might not've, so they work exactly as they say." 
09:28:37 <J_Arcane_> https://github.com/jarcane/heresy/commit/61321c114669b366a362c287984b2719708c526c 
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10:50:19 <Jafet> Is it known whether there is a nontrivial palindrome for bases 2, 3 and 5? 
10:53:14 <Jafet> (Or even 2, 3, and 4.) 
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11:27:05 <boily> fungot: fungellot. what are you supreming? 
11:27:05 <fungot> boily: objc looks like someone mixed malbolge, c, e, r, e, b, c: if a flaw isn't fatal, it's acceptable. 2.0 seconds could be a simple mail server designed to just work 
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11:33:13 <b_jonas> fungot, do you like running double exponential time algorithms? 
11:35:38 <b_jonas> fungot, do you like winger? 
11:35:39 <fungot> b_jonas: wait. you intended to impose on your prototype system?' what? it was a list with two elements 
11:35:55 <elliott> `addquote <b_jonas> fungot, do you like running double exponential time algorithms?  <fungot> b_jonas: im not sure 
11:35:55 <fungot> elliott: still law is law...) and ( d or f) 
11:36:12 <HackEgo> 1226) <b_jonas> fungot, do you like running double exponential time algorithms?  <fungot> b_jonas: im not sure 
11:37:14 <boily> if some charitable soul on this Fine Chännel could make the damn wisdom PDF compile on texlive 2014, that'd be very helpful and I could get back to editing it. 
11:37:25 <boily> (having some problem with the Greek package...) 
11:42:04 <b_jonas> fungot, how do you feel about the conflicting requirements of good practices when no alignment causes performance penalties because the cpu has to access data crossing cache lines, but too much alignment causes performance penalty due to every data trying to share the same l1 cache line? 
11:42:05 <fungot> b_jonas: but right now the system is only very hard to replace the sorting order for nick lengths! 
11:42:57 <boily> nick lengths are as good as they are. five letters masterrace! 
11:43:14 <shachaf> boily: since when is this a Chännel twh 
11:43:29 <b_jonas> fungot, which fairy should I forget to invite to the newborn child's christening? 
11:43:29 <fungot> b_jonas: if your point is completely bogus.) 
11:43:48 <b_jonas> fungot: yeah, but if you had to choose one? 
11:43:49 <fungot> b_jonas: when you can be more efficient both in time and they are mostly in canada, i wouldn't assume it to do 
11:44:11 <b_jonas> fungot, do they ride a motorbike in the winter? 
11:44:11 <fungot> b_jonas: dhcpd is running as you described it. 
11:45:11 <boily> shachaf: according to my logs, since February 13, 2014. 
11:45:20 <b_jonas> fungot, if an adolescent boy wishes to honorably sever ties with his family to avoid the consequences of the century old feud between his family and the Capulets, what should he become? a cleric, a monk, or a mercenary? 
11:47:50 <zzo38> Are those the only three choices? 
11:48:52 <boily> were there engineers in those times? 
11:56:58 <b_jonas> zzo38: no, you could give some other choice too if you wish 
11:57:12 <b_jonas> these are just the ones that's occurred to me 
11:57:32 <b_jonas> I guess they could try to enter the guild of assassins too 
11:58:05 <b_jonas> but I'm not sure how honorable it is to join a theatre 
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12:01:56 <b_jonas> hehe, this bad translation is amusing. in this list, it has chinese commas between Hungarian words 
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13:17:07 <J_Arcane_> http://gabrielmartin.net/projects/hipku/ 
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13:55:50 * J_Arcane_ gazes into the abyss that is random number generation in a functional language. 
13:57:12 * J_Arcane_ is being rather facetious, but it is an issue that needs to be decided for Heresy. 
14:00:53 <J_Arcane_> True. But I have something I might want to do with my first game project in Heresy that might require a more predictable approach.  
14:03:37 <fizzie> fungot: Why are you running your own dhcpd? Was it your fault my DHCP clients had stopped working?  
14:03:37 <fungot> fizzie: i don't use safari often :) 
14:03:51 <fizzie> fungot: O-kay, but that doesn't seem terribly relevant. 
14:03:51 <fungot> fizzie: that base blocking technique and improved it with the default formatting and don't want to 
14:04:29 <Jafet> If you call into a coroutine, the coroutine calls also into you 
14:07:17 <J_Arcane_> Basically, I haven't actually established I/O beyond console print and input in Heresy yet (I'm thinking external IO will take place in parameterized blocks only, but haven't got round to implementing it yet). 
14:07:42 <J_Arcane_> So I thought for a game, rather than have a save function, I'd use a password system like the old NES games. 
14:09:42 <J_Arcane_> But it begs the question of whether the random number seed should be included in the derivation for the password or not, and that means I have to be more particular about how seeds are generated and used in the program (and indeed, possibly in the language itself) 
14:10:57 <elliott> why do you need an RNG seed for this 
14:11:56 <J_Arcane_> Oh, right, because it's an RPG. Die rolls and what not.  
14:12:09 <elliott> but you want the seed to be predictable given the password? 
14:12:32 <elliott> how do you generate the password 
14:14:32 <J_Arcane_> The password would just be a serialization of the player stat values and possibly the RNG seed to a text string, maybe base64 or something if I'm feeling lazy, or something original if I'm not. 
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14:15:49 <elliott> I mean a PRNG is a pure function of its state 
14:15:58 <elliott> so you shouldn't need to change the language 
14:16:08 <elliott> (okay it's state -> (output, state)) 
14:16:24 <elliott> (my point is you can handle it as well as any state if your initial seed is fixed) 
14:16:50 <J_Arcane_> elliott: Well, literally, the syntax and functions haven't been defined in Heresy yet. I need to write them before I can start writing a game. 
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14:17:02 <elliott> why do you have to change the language 
14:17:06 <elliott> you can implement a PRNG in a few lines 
14:17:22 <elliott> https://en.wikipedia.org/wiki/Xorshift 
14:20:21 <HackEgo> [wiki] [[Esolang:Sandbox]]  http://esolangs.org/w/index.php?diff=41474&oldid=40202 * 80.95.121.33 * (+25)  
14:22:12 <elliott> J_Arcane_: btw not trying to seem argumentative, just legitimately curious as to the problem 
14:23:37 <J_Arcane_> elliott: Really, it's not necessarily a 'problem' just deciding how to define it. I think probably I'll just implement RANDOMIZE and RND, and then abuse the lexical scoping to rewrite the seed when needed. 
14:23:53 <elliott> isn't this language meant to be pure :) 
14:24:05 <elliott> I'd just implement the RNG inside the game or something, personally! 
14:24:20 <elliott> if you don't care about getting a seed from the outside world you don't need to change the language at all 
14:24:27 <J_Arcane_> Well, 'rewrite' in the sense of redefining it locally. 
14:25:01 <HackEgo> [wiki] [[Esolang:Sandbox]]  http://esolangs.org/w/index.php?diff=41475&oldid=41474 * 80.95.121.33 * (+64)  
14:26:50 <J_Arcane_> Ie. you can still get away with just doing (def seed (randomize timer)) at the top level, and just (def seed [somethingelse]) farther down the tree. Or just say hell with it and not worry about storing the seed. 
14:27:34 <elliott> well. okay. I was just thinking you'd make a function that takes a state and returns (list output newstate). 
14:27:53 <elliott> xorshift just "reseeds" every step 
14:28:04 <elliott> so you pass in the seed initially and then get a new one out and a returned number, etc. 
14:28:31 <oren> if you already have I/O, use the old-school keyboard intervals method! 
14:32:16 <oren> you can isolate the unfunctional stuff to one thing then 
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14:51:50 <oerjan> <Jafet> (Or even 2, 3, and 4.) <-- having both 2 and 4 seems like it'll restrict digits quite a lot 
14:52:31 <oerjan> if it's even length in binary you can only use 00 and 11 
14:52:55 <oerjan> (topic was palindromes) 
14:55:37 <oerjan> 1(00)*01 is the only possibility with odd length 
14:57:53 <oerjan> > [showIntAtBase 3 intToDigit (4^n+1) | n<-[1..]] 
14:57:55 <lambdabot>  [<[Char] -> [Char]>,<[Char] -> [Char]>,<[Char] -> [Char]>,<[Char] -> [Char]>... 
14:58:04 <oerjan> > [showIntAtBase 3 intToDigit (4^n+1) "" | n<-[1..]] 
14:58:06 <lambdabot>  ["12","122","2102","100112","1101222","12121202","211110212","10022220022","... 
14:58:31 <oerjan> hm none in the short term... 
14:58:43 <oerjan> > [showIntAtBase 3 intToDigit (4^n+1) "" | n<-[8..]] 
14:58:44 <lambdabot>  ["10022220022","111022121002","1222021101012","21220002111122","101112010100... 
14:59:13 <Jafet> Only the base 4 palindromes with the digits 0,1 or the digits 0,3 are base 2 palindromes. 
14:59:52 <oerjan> Jafet: um i don't think digits 0,1 work 
15:00:18 <int-e> 1111 must also work 
15:00:37 <oerjan> int-e: that's digits 0,3 
15:00:54 <int-e> so 1010101 in base 2 
15:01:20 <oerjan> where was my logic error.. 
15:01:26 <int-e> so I agree with Jafet on this 
15:02:26 <int-e> we're just inserting 0s between all digits 
15:02:47 <int-e> to convert from base 4 to base 2. 
15:03:16 <Jafet> Brain? I learned this by computer. 
15:03:33 <int-e> brains generalize better 
15:04:34 <oerjan> so did you find any that were also base 3 
15:05:17 <oerjan> i think "non-trivial" was specified in the original question 
15:09:29 <oerjan> > let p b n | s <- showIntAtBase b intToDigit n "" = [s|s == reverse s] in [l| n<-[3..], Just l <- mapM (`p` n) [2,3,4]] 
15:09:31 <lambdabot>  Couldn't match expected type ‘[GHC.Base.String]’ 
15:09:31 <lambdabot>              with actual type ‘Data.Maybe.Maybe t’ 
15:09:41 <oerjan> that was too clever to work on first try 
15:09:56 <oerjan> > let p b n | s <- showIntAtBase b intToDigit n "" = [s|s == reverse s] in [l| n<-[3..], Just l <- [mapM (`p` n) [2,3,4]]] 
15:09:57 <lambdabot>  Couldn't match type ‘Data.Maybe.Maybe’ with ‘[]’ 
15:09:58 <lambdabot>  Expected type: [[GHC.Base.String]] 
15:09:58 <lambdabot>    Actual type: Data.Maybe.Maybe [GHC.Base.String] 
15:10:28 <oerjan> > let p b n | s <- showIntAtBase b intToDigit n "" = [s|s == reverse s] in [l| n<-[3..], l <- mapM (`p` n) [2,3,4]] 
15:10:39 <oerjan> > let p b n | s <- showIntAtBase b intToDigit n "" = [s|s == reverse s] in [l| n<-[3..], l <- mapM (`p` n) [2,4]] 
15:10:40 <lambdabot>  [["11","3"],["101","11"],["1111","33"],["10001","101"],["10101","111"],["110... 
15:10:56 <oerjan> > let p b n | s <- showIntAtBase b intToDigit n "" = [s|s == reverse s] in [l| n<-[3..], l <- mapM (`p` n) [2,3,5]] 
15:11:18 <oerjan> it seems not immediately clear that any exist 
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15:13:08 <int-e> oh the digit 0/3 numbers wont' cut it. 
15:13:41 <int-e> trailing digit 0 in base 3. 
15:14:11 <Jafet> If one exists, it's certainly not going to be less than 8022581057533823761829436662099 
15:14:17 <oerjan> digit sum rule for base 4, right 
15:14:34 <Jafet> @oeis 1,6643,1422773,5415589,90396755477 
15:14:35 <lambdabot>  Numbers that are palindromic in bases 2 and 3.[0,1,6643,1422773,5415589,9039... 
15:15:18 <oerjan> presumably heuristics mean that unless you find them fast, there won't be any 
15:15:36 <int-e> but you can never be sure 
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15:16:41 <b_jonas> oh, that reminds me to that open problem about digit something and powers... um what was it 
15:17:32 <oerjan> b_jonas: "is there any power of 2 > last obvious one which doesn't contain the digit 0"? 
15:17:54 <b_jonas> oerjan: um, I don't think that was it 
15:18:14 <oerjan> well i vaguely recall something like it 
15:18:28 <oerjan> although maybe it came up as a consequence of something else 
15:18:42 <b_jonas> maybe it was something like "is there a power of two that when you reverse the digits becomes a power of five" 
15:19:26 <oerjan> that sounds like another thing that's ridiculously heuristically unlikely :P 
15:19:29 <int-e> ok, there's no other base-2-3-4 palindrome smaller than 4^48. 
15:19:43 <Jafet> It's apparently been proven that there is a counterexample to the Mertens conjecture below exp(1.59*10^40), though no one actually knows one 
15:20:06 <b_jonas> Jafet: what's the Mertens conjecture? 
15:20:10 <int-e> (Jafets bound is better) 
15:20:41 <int-e> But then again I have not invested very much CPU time. 
15:20:49 <Jafet> int-e: just check all the eight known base 2/3 palindromes to confirm that none (other than 1) are base 4 palindromes 
15:21:38 <b_jonas> int-e: how about numbers that are palindromes in bases 2, 3, 5? 
15:22:07 <oerjan> i'd imagine the eight known Jafet is talking about might help there too 
15:22:12 <Jafet> For that we also have the trivial lower bound of 8022581057533823761829436662099 
15:22:27 <b_jonas> [ 10^. 8022581057533823761829436662099 
15:22:30 <oerjan> int-e: @oeis _really_ should give the url :( 
15:22:48 <int-e> oerjan: patches welcome, I'm getting notified of mokus' pull requests. 
15:22:54 <Jafet> Huh, it should at least give the A-number 
15:23:01 <Jafet> (http://oeis.org/A060792) 
15:23:29 <int-e> Jafet: I could improve that bound for the 2-3-4-palindromes, because we've so nicely characterized the 2-4-palindromes. 
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15:23:50 <b_jonas> [ 10^. 8022581057533823761829436662099 
15:24:25 <oerjan> hm 2,3 palindromes seem a _lot_ rarer than 10,16 ones 
15:24:34 <Jafet> True. But one might suspect that no such integers exist anyway. 
15:25:12 <oerjan> well i mean, 2,3 palindromes are so rare that the simple sqrt(n) heuristic must be broken somehow 
15:25:27 <Jafet> Larger bases have more palindromes 
15:26:02 <int-e> oerjan: smaller bases profit less from the wildcard center digit in the odd-number-of-digts case. 
15:26:38 <int-e> so this observation is consistent with my intuition for the problem. 
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15:28:02 <b_jonas> fungot, what do you think? 
15:28:02 <fungot> b_jonas: i now know where to find foo? otherwise why not just make the directory accessible to the right-hand sides are not lambdas, right? :p. 
15:28:26 <int-e> I'm actually kind of impressed that the 2-3-palindrome calculation has been pushed so far. Makes me wonder whether there's a trick for speeding things up that I'm missing. 
15:29:28 <Jafet> There are apparently tricks that save constant factors, but they are specific to the 2-3 case 
15:31:27 <b_jonas> [ 10^. 8022581057533823761829436662099  
15:31:36 <b_jonas> [ 2 3^. 8022581057533823761829436662099  
15:31:36 <j-bot> b_jonas: 102.662 64.7725 
15:32:00 <int-e> I guess there is one asymptotic trick that may allow testing numbers up to n in O(n^(max(1-k,2*k))log(n)) time, given O(n^(2*k)) memory. 
15:32:19 <Jafet> Yes, you can trade space for time by taking residues. 
15:33:04 <b_jonas> int-e: the fun part about that oeis entry is "Next term (if it exists)" so apparently they don't know if there's infinitely many. 
15:33:22 <int-e> (make a table of the possible differences resulting from picking the center k*log(n) digits for both bases.) 
15:33:23 <Jafet> That's written on many oeis entries. 
15:33:41 <b_jonas> int-e: there's a link to an article on computing them though 
15:34:08 <oerjan> > logBase 3 8022581057533823761829436662099 
15:34:24 <b_jonas> ^ agrees with j-bot's reply, good 
15:34:32 <oerjan> hm they haven't pushed it that much further 
15:36:58 <Jafet> Also, once you pick the first few digits in each base, the possible palindromes are in the intersection of two arithmetic progressions 
15:39:26 <int-e> oerjan: btw, naively, I would expect 10-16-palindromes to be 23/80 * sqrt(240) more numerous than 2-3-palindromes, about 4.454 
15:40:29 <int-e> (missing a "times" in there, somewhere.) 
15:41:53 <int-e> > (1/sqrt 160 + sqrt 160) / (1/sqrt 6 + sqrt 6) 
15:42:19 <b_jonas> Jafet: the oeis entry links to http://chesswanks.com/txt/BigDualPalindromes.txt 
15:43:01 <b_jonas> maybe check the other links too 
15:43:05 <b_jonas> from http://oeis.org/A060792 
15:43:42 <J_Arcane_> http://clientsfromhell.net/post/105178230478/nightmare-fuel-for-designers 
15:44:33 <oerjan> argh .txt without line wrap 
15:46:39 <oerjan> int-e: i wonder if the fact 10 and 16 have a common prime factor matters there 
15:47:08 <oerjan> although given how well my calculation yesterday matched, perhaps not 
15:47:19 <b_jonas> oerjan: it does make things worse 
15:47:40 <b_jonas> oerjan: http://chesswanks.com/txt/BigDualPalindromes.txt explains how it helps that the last digits of base 2 constrain the middle digits of base 3 
15:48:00 <b_jonas> because only the middle digit of a base 3 palindrome can change it modulo 2 
15:48:12 <oerjan> b_jonas: um i wasn't really asking for tdlr 
15:49:07 <b_jonas> there's actually more stuff it tells 
15:49:12 <b_jonas> basically I'm talking nonsense 
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15:51:11 <int-e> oerjan: So Many Fucking Words. Clearly this is an OOTS reference. *ducks* 
15:52:19 <int-e> Now to find an interpretation that turns the caption into a proper sentence... 
15:52:28 <oerjan> b_jonas: btw my investigations of the mcculloch machine seem to resolve into about 64 mutually dependent cases, each parametrized by up to 6 numbers 
15:52:53 <oerjan> might need a program to do the algebra 
15:53:08 <b_jonas> oerjan: if you get something useful, will you write some notes somewhere? 
15:53:12 <int-e> See Me Fumble With an acronym [that] almost makes sense. 
15:53:46 <b_jonas> I'll definitely be interested, and others (zzo38 maybe) might be too 
15:55:18 <b_jonas> hehe, "could easily be generalized to find dual palindromes in ... binary and *balanced* ternary" 
15:56:03 <int-e> and hehe, http://www.urbandictionary.com/define.php?term=SMFW 
15:56:29 <b_jonas> and that writeup is from 2014-01 
15:57:44 <int-e> the basice principles seem applicable to any pair of bases, really. 
16:00:01 <elliott> oerjan: is water turing complete? asking for a friend 
16:00:46 <b_jonas> elliott: depends on how you define it 
16:00:50 <int-e> rumor has it we evolved in the ocean 
16:00:51 <coppro> int-e: dude, how are you alive 
16:01:04 <int-e> coppro: You misunderstood. 
16:01:12 <b_jonas> maybe it's only PSPACE-complete 
16:01:22 <b_jonas> but maybe it has much less power than that 
16:01:32 <elliott> water is very powerful and I live in fear of it every day 
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16:01:40 <int-e> coppro: "water" could mean "pure H2O", but it could also mean the stuff that's in the rivers and in the seas. 
16:02:13 <b_jonas> int-e: yeah, except in Ankh, which is a river but certainly not water 
16:02:33 <elliott> int-e: whichever you are most scared of. 
16:02:53 <elliott> this is not a trick question and i am just trying to know the computational class of water please. 
16:03:06 <b_jonas> elliott: then it's PSPACE-complete 
16:03:20 <b_jonas> but not very efficient, transistors work much better 
16:04:19 <oerjan> elliott: i think terry tao may be working on that problem hth 
16:05:45 <oerjan> (for a certain definition of water equivalent to "ideal fluid") 
16:05:48 <elliott> what if they're really big birds 
16:06:18 <oerjan> elliott: i hear the X bird is turing complete hth 
16:06:33 <int-e> does it run Twitter? 
16:06:52 <elliott> "Coq: The world’s best macro assembler?" some questions exist just to be posed 
16:06:53 <b_jonas> elliott: birds are certainly at least turing complete. they were used for divination afterall. 
16:06:55 <int-e> (Err, does Twitter run on the X bird? Or on Combinatory Logic, at least?) 
16:07:09 <lambdabot> dons says: that's 3 things i've never seen in the one sentence before: my assembler .. a bunch of type classes .. a natural syntax 
16:07:24 <b_jonas> elliott: see also the Mockingbird book of Smullyan 
16:07:32 <b_jonas> which also tells that birds are Turing-complete 
16:07:35 <elliott> b_jonas: okay but how loudly do they chirp 
16:07:50 <elliott> I want a quiet and obedient bird computer to do my taxes 
16:07:52 <int-e> b_jonas is mocking birds... 
16:07:58 <b_jonas> fungot: how loud do mockingbirds chirps? 
16:07:58 <fungot> b_jonas: yes but how do you suggest? i like it 
16:08:17 <b_jonas> fungot: elliot suggests a quiet and obedient bird computer to do his taxes. can he get one? 
16:08:17 <fungot> b_jonas: ( define foo ( lambda ( k) 
16:08:25 <elliott> coq macro assembler is like mustard watch 
16:08:37 <b_jonas> elliott: I'm affraid large computing power isn't enough to do your taxes 
16:08:53 <elliott> fungot is suggesting I do my taxes in lisp I think 
16:08:53 <fungot> elliott: because you are not alone: 
16:09:18 <b_jonas> that has unbalanced parenthesis 
16:10:16 <elliott> coqc over this file we can then run a trivial hex-to-binary tool to 
16:10:16 <elliott> >coqc winfact.v >winfact.hex 
16:10:16 <elliott> >hexbin winfact.hex winfact.exe 
16:10:20 <elliott> Factorial of 10 is 3628800 
16:10:23 <elliott> Factorial of 12 is 479001600 
16:10:25 <elliott> all my build processes involve hexadecimal->raw conversion 
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16:13:16 <elliott> because coq is the world's best macro assembler! 
16:13:27 <elliott> to be fair this paper is probably doing cool things, it's just also ridiculous 
16:13:50 <int-e> why can't they produce binary output? 
16:14:30 <elliott> because you can't really write coq programs 
16:14:34 <elliott> the result there is like typing something into ghci 
16:14:38 <elliott> and getting a Show result back 
16:15:30 <elliott> basically the UI model for coq is interactive proof assistant use (it would be kind of unusable for writing proofs if it wasn't interactive), and files are just workspaces containing a bunch of commands 
16:16:38 <oren> ohh, like Matlab 
16:17:10 <oren> that is the only thing i like about matlab 
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17:10:29 <ais523> ooh, I just got some spam from some spammers 
17:10:49 <ais523> who outright said they were spammers, and offered to send out 5 million spam emails on my behalf for $999 
17:10:56 <ais523> interesting marketing strategy, I guess it makes a lot of sense 
17:11:10 <ais523> that price seems pretty expensive to me, but I don't know much about spam 
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17:12:51 <b_jonas> ais523: apparently some companies advertise that they're hiring to some sort of it position (maybe web developer) in messages hidden as non-text in webpages 
17:13:11 <b_jonas> such as in messages to the javascript console 
17:13:24 <ais523> it wouldn't surprise me, there are a lot of companies 
17:13:51 <ais523> plot twist: the company didn't think it was hiring, but the existing web developer is sick of their position and wants to hire a replacement 
17:14:40 <int-e> plot twist: company is not interested in hiring javascript developers and people who've never heard of noscript. 
17:15:36 <b_jonas> ais523: I was considering a similar plot twist: the company is hiring, so the web developer puts a slightly hidden message that they're hiring, and a more hidden message warning that they put that previous message there because their boss asked, but they don't recommend that company because it's terrible working there. 
17:16:59 <int-e> followed by a comment from the boss that there are now two more positions available than originally planned 
17:19:48 <glguy> Is that a new branch of math? 
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17:22:48 <J_Arcane_> it's my expression every time I descend the rabbit hole that is reimplementing most math functions ... 
17:23:23 <glguy> Which rabbit hole are you in today? 
17:23:43 <J_Arcane_> I decided to take another stab at either atan or log.  
17:24:02 <ais523> J_Arcane_: I implemented an integer-arithmetic log semi-recently 
17:24:06 <J_Arcane_> Or rather, I think I started with atan, and found a proof for solving it that needed log ... 
17:24:16 <ais523> as part of removing all floating-point arithmetic from save-affecting parts of NH4 
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17:28:23 <b_jonas> ais523: there's floating point arithmetic in nethack? 
17:28:25 <J_Arcane_> part of my goal with Heresy was to implement as much as I can myself instead of calling out to Racket. 
17:28:32 <b_jonas> ais523: there is only very little I hope 
17:28:42 <ais523> b_jonas: there was some in the scoring system a while back 
17:28:50 <ais523> nowadays, it's only used for display purposes 
17:29:02 <ais523> if you see a percentage shown in a message box, that may have been calculated with float arithmetic 
17:29:12 <ais523> but anything gameplay-affecting is integer arithmetic 
17:29:24 <b_jonas> I'm not really worried about it though because if you only use basic floating point arithmetic (including square root, but excluding exponentials and logarithms and trig) it mostly works as perfect IEEE floats anyway these days 
17:29:50 <ais523> b_jonas: it doesn't, and the reason is that different processors have different rounding rules, and different OSes can have different default FPU control words 
17:29:51 <b_jonas> though... with many settings compilers still have the choice to optimize certain chained operations to higher precision,  
17:30:00 <J_Arcane_> I did manage to get sin and cos in a kinda cheaty way thanks to Racket's built-in support for complex numbers. 
17:30:56 <b_jonas> ais523: so it's never used to determine the outcome of random events? 
17:31:13 <ais523> b_jonas: float arithmetic? no, I'm not crazy 
17:31:20 <b_jonas> hey wait, isn't #nethack4 supposed to go off topic when we're talking about nethack here? 
17:31:35 <b_jonas> ais523: I'm not thinking you'd add such a thing, only that you'd inherit it from the devteam 
17:31:39 <ais523> we can have two different ontopic discussions about NetHack in two different channels! 
17:31:52 <ais523> b_jonas: you can expect no floating point in devteam NetHack 
17:31:59 <ais523> because it probably runs on systems with no FPU and no FPU emulation 
17:32:26 <elliott> so what happened with that leaked version 
17:32:44 <ais523> it's still happening, believe it or not 
17:33:03 <ais523> the devteam are apparently making some sort of crazy complex new git-based infrastructure, but haven't told us the details 
17:33:12 <ais523> it's being slowed down by the fact that they all have to learn git 
17:33:13 <elliott> wow, so this actually spurred them into action? 
17:33:41 <b_jonas> ais523: I thought even old systems always had at least software fp emulation, though it might not be able to use it in nethack because it costs some ram 
17:33:53 <elliott> is nethack 4 still incredibly purple 
17:34:20 <ais523> b_jonas: software FPU emulation is a compiler feature 
17:34:27 <ais523> most compilers of the era had it, but possibly not all of them 
17:34:35 <b_jonas> elliott: (devteam is making something they're not telling us about) isn't (spurred to action) nor is any real change from what we've seen in the last 10 years 
17:34:57 <b_jonas> ais523: yes, and most C compilers had it simply because floating point is built into C and used very often 
17:35:05 <elliott> also does it still have that dorky logo 
17:35:05 <ais523> right, the main change is that instead of working on NetHack with no public details, they're now working on something else with no public details 
17:35:18 <ais523> elliott: oh right, the borders of menus are still purple 
17:35:23 <ais523> and yes, it still has the ASCII art logo 
17:35:32 <elliott> is it still full of horrible daniel_tisms 
17:35:34 <b_jonas> (obviously some compilers don't have it because hardware or kernel floating point is always available on the system they're compiling for) 
17:35:48 <J_Arcane_> There are formulas for sin and cos in terms of i, so taking advantage of racket number support turned them into one liners, basically 
17:36:14 <elliott> doesn't racket have sin/cos 
17:36:44 <ais523> elliott: it's getting less full of daniel_tisms over time, but slowly 
17:36:58 <elliott> is it playable with 80x24 yet 
17:38:04 <ais523> you might need to mess with some options; if you're playing only in 80x24, you can turn off menu borders and make them page by pages 
17:38:08 <ais523> then it looks a lot more like vanilla 
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17:38:36 <J_Arcane_> elliott: yes, but it was an interesting exercise anyway. I'll probably wind up refactoring later and just making them all macros to the Racket versions; I trust their code better. But it was interesting to write. 
17:39:07 <elliott> does it have #tip or whatever it was 
17:39:25 <elliott> oh hey also how did that sokoban generating go 
17:39:27 <ais523> no, it doesn't have #tip 
17:39:41 <ais523> and the sokoban generator has actually made a lot of progress, it can generate parts of puzzles but not complete puzzles 
17:39:45 <ais523> (close to finished, just not finished) 
17:39:49 <ais523> and it isn't hooked up to NetHack yet 
17:40:07 <b_jonas> I hope you won't put it in nethack because then I won't be able to solve sokoban 
17:40:14 <b_jonas> unless you also put in a sokoban solver to autoexplore 
17:40:34 <b_jonas> which you should by the way because not having one is interface screw which nh4 is supposed to avoid 
17:40:38 <ais523> b_jonas: this is getting into dungeon redesign contest, and I think we decided not to discuss that until it happened so that we don't bias each other's submissions 
17:40:45 <ais523> however, I think I might have a solution that keeps everyone happy 
17:41:00 <ais523> also, Sokoban is one of the hardest branches for bots to play 
17:42:28 <elliott> b_jonas: this is why nethack is ridiculous 
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17:42:43 <elliott> if you want to be able to solve sokoban without playing sokoban why even have the sokoban part 
17:42:53 <elliott> I mean I htink sokoban in roguelikes is kind of awful but :p 
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18:18:38 <|oren\> aet your terminal to fracktur 
18:23:13 <|oren\> wait is it even possible to do that? 
18:23:46 <|oren\> i have LaTeX installed but I don't see fractur in my font list 
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18:26:14 <int-e> Oh, this is a horrible idea. 
18:27:20 <int-e> http://int-e.eu/~bf3/tmp/eufm10.png 
18:28:34 <|oren\> Oh! so that is it... hmm, doesn't seem like it has all the chars 
18:31:08 <|oren\> Aha, i found a similar one that does: http://snag.gy/6iaf9.jpg Sanafon-Kazari 
18:33:41 <|oren\> Really i like all the fonts in the Sanafon series 
18:34:13 <|oren\> but this one is pleasingly medieval 
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18:42:06 <|oren\> https://fabrizioschiavi.wordpress.com/tag/monospaced-font/ <-- there is this but it isn't free 
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18:52:45 <b_jonas> wait, let me repeat my question 
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18:54:02 <b_jonas> if I NFC resp NFD normalize a unicode string, at most how many times its length can it grow, measured in utf-16 code points? 
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18:55:34 <|oren\> i'm not sure. what is the maximum number of diacritics for which a combined glyph esixts? 
18:56:17 <|oren\> i found a real typewriter fractur: http://snag.gy/RVLmG.jpg 
19:06:24 <|oren\> Hold on: do Hangeul decompose into the letter?  
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19:09:13 <int-e> |oren\: so what font is that? 
19:09:29 <|oren\> http://www.dafont.com/f25-blacklettertypewriter.font 
19:11:08 <|oren\> I am looking through the http://www.unicode.org/charts/normalization/ charts and so far 3 is the maximum for LAitn 
19:14:04 <|oren\> Hangeul also only decompose into 3 code points at maximum apparently 
19:15:12 <|oren\> For NFD that is. for KC or KD you can have ㌙ and crap 
19:16:45 <|oren\> which decomposes into 5 or 6 code points 
19:18:18 <|oren\> 𝅘𝅥𝅲 decomposes under NFD into 3 code points, each outside the bMP so each being two 16 bit codes 
19:19:21 <|oren\> looks like my copypasting it decomposed it. it is char 1D164 
19:21:15 <|oren\> so under NFD it appears the maximum is an X3 size increase 
19:24:18 <|oren\> Under NFKD the maximum i've found is 7 ㈝ 
19:25:59 <|oren\> Does that answer it b_jonas? 
19:27:21 <int-e> \emph{metasepia knows the weather at your nearest airport, and also something    
19:27:47 <int-e> it had a duckduckgo interface, right? 
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19:27:55 <|oren\> Wat. HOLY SHIT: ﷺ  <--that decomposes into 18 code points  
19:29:56 <int-e> |oren\: it's a pity that the F25 font uses {} for ck and st. 
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19:31:45 <HackEgo> U+FDFA ARABIC LIGATURE SALLALLAHOU ALAYHE WASALLAM \ UTF-8: ef b7 ba  UTF-16BE: fdfa  Decimal: ﷺ \ ﷺ \ Category: Lo (Letter, Other) \ Bidi: AL (Right-to-Left Arabic) \ Decomposition: <isolated> 0635 0644 0649 0020 0627 0644 0644 0647 0020 0639 0644 064A 0647 0020 0648 0633 0644 0645 
19:32:05 <|oren\> SEE? 18 friggin' code points 
19:33:06 <int-e> arabic is why they've stopped adding ligatures to Unicode, isn't it? 
19:34:45 <|oren\> There is this one that should decompose but doesn't 
19:35:23 <HackEgo> U+FDFD ARABIC LIGATURE BISMILLAH AR-RAHMAN AR-RAHEEM \ UTF-8: ef b7 bd  UTF-16BE: fdfd  Decimal: ﷽ \ ﷽ \ Category: So (Symbol, Other) \ Bidi: ON (Other Neutrals) 
19:36:04 <|oren\> they probably just decided to stop adding decomposable ligatures 
19:38:20 <|oren\> It is also a good thing they never thought to decompose Han characters into radicals. 
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20:11:37 <b_jonas> |oren\: mostly, though I don't know whether it's enough to count decompositions of single characters, I don't know if there are composed characters that decompose to uglier stuff,  
20:11:46 <b_jonas> though most likely single characters give the maximum expansion 
20:12:06 <ais523> hmm, |oren\'s nick is making me wonder if it's possible to have a useful Ruby lambda expression as an IRC nick 
20:12:25 <b_jonas> |oren\: and I'd also like to know how much NFC can expand, which might be less than how much NFD can 
20:13:33 <b_jonas> and I'm specificially asking not about latin nor even about meaningful strings, but more about how much some deliberately meaningless strings that people enter just to make my program choke can expand 
20:13:48 <b_jonas> of course if I write the program I'll hopefully add hard limits, but still, I wonder 
20:14:18 <b_jonas> the kind of reasonable strings I work with will likely not expand much 
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21:16:58 <|oren\> oh i guess it's over. Why does it do that? 
21:18:43 <|oren\> how come i never get affected? 
21:19:55 <ais523> you might have been, a netsplit is when IRC falls into two separate halves 
21:20:01 <ais523> you see everyone in the other half leaving your half 
21:20:08 <ais523> looks like you were on the large side this time 
21:20:15 <ais523> when you're on the small side, it looks a lot more dramatic 
21:20:22 <ais523> but it still looks like it's happening to everyone else, rather than you 
21:24:42 <elliott> 20:30:08 -!- Netsplit *.net <-> *.split quits: SirCmpwn, quintopia 
21:24:42 <elliott> 20:31:17 -!- Netsplit over, joins: quintopia, SirCmpwn 
21:24:49 <elliott> and a bunch of random ping timeouts and joins that I guess were maybe related? 
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23:12:51 <|oren\> Eureka! everything is an array! 
23:13:48 <oerjan> |oren\: but is it as dense as gold? 
23:14:25 <|oren\> using () for subscripts, I(0)+I(1) would make sense 
23:15:58 <|oren\> of course! what was i thinking, a language called csrip7 should have sub/superscripts. 
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23:26:22 <|oren\> lololol treehugger is cool? it's cool how its address space is more infinite than the integers. 
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23:26:58 <oerjan> i'm sorry but it's still countable hth 
23:27:50 <|oren\> oh i see, you number them in ternary with ^>< as gitis 
23:27:53 <cluid> ill haev a look at befunge 
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23:29:38 <|oren\> are there any esolangs with uncountable memory space? 
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23:30:21 <shachaf> oerjan: |oren\ asked for something uncountable hth 
23:30:51 <oerjan> it's rather hard to get to an arbitrary address in an uncountable space using finite commands 
23:31:15 <shachaf> well offering things that count certainly isn't going to help 
23:31:31 <oerjan> just because it counts doesn't mean it can be counted 
23:32:26 <oerjan> |oren\: shachaf is trying to tempt me with puns hth 
23:32:44 <shachaf> i really thought i had a shot there 
23:33:02 <oerjan> shachaf: you were close. 
23:33:27 <|oren\> I am still using a blackletter font in my terminal 
23:33:42 <|oren\> i am getting used to it 
23:34:52 <|oren\> Oh, how about if you have a tree of countably infinite branching rate?  
23:35:45 <|oren\> E.g. a version of Treehugger where <N> is a command for arbitrary N.  
23:36:13 <cluid> |oren\, if you look at the brainfuck algorithms page there is an emergent language there: brainfuck with 'varibales' 
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23:39:13 <elliott> a brainfuck with real tape indices would be fun 
23:41:31 <oerjan> |oren\: blackletter? i thought you were using that heart thing? or am i confusing you with someone else. 
23:41:38 <elliott> or how about BF with the tape representing one real 
23:41:45 <elliott> in normal BF only a finite subset of the tape is ever non-zero 
23:41:54 <elliott> so you'd have to come up with operations that work on the entire tape 
23:42:13 <|oren\> oerjan: i was using cursive with cute hearts now I'm using blackletter 
23:42:37 <elliott> (s.t. the possible tapes get the cardinality \Beth_1) 
23:42:52 <oerjan> elliott: hm for that to be weird enough you'd need <> variants that multiplied by something other than a power of 2 
23:43:23 <elliott> you'd need to be able to do sufficiently fancy enough operations on the tape pointer for it to actually be a real, yes 
23:43:32 <oerjan> although a real still doesn't give you infinite tape both ways 
23:43:40 <elliott> (I suppose it's pretty much inevitably a subset of the reals because most of them are indescribeable) 
23:43:59 <elliott> (unless you had a command to set the tape pointer to something uniformly random in [0,1) >:) ) 
23:44:28 <elliott> it would be cool if the tape was continuous 
23:44:39 <elliott> like instead of a value being at exactly one real index it sort of diffused throughout an interval 
23:45:38 <elliott> like you could have a value 128.4 at 1 that would decay with the inverse square law at indices above/below that. and so values in different but close positions would interfere with each other. or something 
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23:46:50 <oerjan> elliott: this sounds familiar. 
23:47:23 <oerjan> i think there is such a bf derivative already 
23:47:33 <elliott> that is because all bf derivatives exist 
23:47:45 <elliott> it's just a matter of uniquely identifying which one you're referring to 
23:47:51 <|oren\> it is the esolang version of rule 34 
23:48:01 <oerjan> i mean one that has been discussed in channel, although not necessarily put on the wiki 
23:48:26 <elliott> it's one of those things where I think I'm inventing but am probably actually just remembering 
23:50:47 <int-e> mwhaha http://int-e.eu/~bf3/tmp/fmono.png 
23:52:24 <oerjan> int-e: you know i think monospace blackletter is like epic missing of the point 
23:53:16 <int-e> I did something slightly crazy. I started with UnifrakturMaguntia, and fontforge, and produced http://int-e.eu/~bf3/tmp/UnifrakturMonospace.ttf in a process that will make every font designer weep :P 
23:53:53 <int-e> (basically reducing the width of capital letters by 60%, except for M and W which were reduced by 50%, plus minor adjustments throughout.) 
23:54:06 -!- oerjan has set topic: The font of madness | https://dl.dropboxusercontent.com/u/2023808/wisdom.pdf http://codu.org/logs/_esoteric/ http://tunes.org/~nef/logs/esoteric/. 
23:54:45 <int-e> oerjan: yes, it's completely missing the point, which *may* be the reason why so few of those fonts actually exist ;-) 
23:55:59 <oerjan> now get microsoft to support it as default 
23:56:07 <int-e> CrazyM4n: that's emacs. 
23:56:10 <cluid> Has anyone been able to write interesting programs in Treehugger? 
23:56:21 <cluid> I would really like to see its potential used 
23:56:33 <HackEgo> 101) <oerjan> alise: mainly it's the fact it blows so hard i cannot avoid hitting the walls of the thing, which completely goes against my basic public toilet hygiene principles 
23:57:32 <olsner> hmm, good quote, makes you simultaneously want and not want to know what it's about 
23:57:49 <int-e> oerjan: that said I think that's actually an improvement over http://int-e.eu/~bf3/tmp/forig.png 
23:58:01 <int-e> oerjan: and that was the point, more or less. 
23:58:05 <oerjan> olsner: it's about the dyson airblade hth 
23:58:28 <oerjan> which they had in my once favorite restaurant 
23:59:03 <|oren\> Ok, so i'll configure my terminal somehow to switch between equally insane fonts at random intervals 
23:59:47 <int-e> CrazyM4n: fwiw, if I were actually using emacs in a terminal, the cyan foreground color would be different. 
23:59:54 <cluid> Has anyone had any IDEAS for it?