»ö« Welcome to Perl 6! | perl6.org/ | evalbot usage: 'p6: say 3;' or rakudo:, or /msg camelia p6: ... | irclog: irc.perl6.org or colabti.org/irclogger/irclogger_logs/perl6 | UTF-8 is our friend!
Set by moritz on 22 December 2015.
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timotimo tries out zscript 00:21
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timotimo hum, it wants complete control over my perl6 builds folder 00:23
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Zoffix m: my @files = reverse <a b c d e f g h i j>.reverse ... <d g h>.any; dd @files; 01:02
camelia Array @files = ["h", "i", "j"]
Zoffix Any cool tricks to make that produce `<a b c d e f g h>` instead? Basically everything until the LAST match of the RHS of … 01:03
m: my @files = <d g h>.map({<a b c d e f g h i j> ... $_}).sort(-*).head; dd @files; 01:04
camelia Array @files = ["a", "b", "c", "d", "e", "f", "g", "h"]
Zoffix Guess that's sufficiently sufficient...
timotimo you mean like a ...^ ? :) 01:05
Zoffix Nah
timotimo oh, until all of the end points have been seen?
Zoffix Until the last one.
timotimo yeah, whichever comes last?
Zoffix Basically, I'm raking through SETTING filelist, and I want all the files that come before Code.pm6, Routine.pm6 and Sub.pm6, regardless of how those three are oredered :) 01:06
Yeah
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timotimo m: <a b c d e f g h i j>.grep({ (state %set := <d g h>.Set){$_}--; so %set }).perl.say 01:07
camelia Cannot resolve caller postcircumfix:<{ }>(Mu, Str); none of these signatures match:
(\SELF, \key)
(\SELF, \key, Mu \ASSIGN)
(\SELF, \key, Mu :$BIND! is raw)
(\SELF, \key, :$delete!, *%other)
(\SELF, \key, :$exists!, *%oth…
Zoffix :D
timotimo m: <a b c d e f g h i j>.grep({ (state $set = <d g h>.Set){$_}--; so $set }).perl.say
camelia Cannot resolve caller postfix:<-->(Bool); the following candidates
match the type but require mutable arguments:
(Mu:D $a is rw)
(Int:D $a is rw)
(Bool:D $a is rw)

The following do not match for other reasons:
(Bool:U $a…
timotimo m: <a b c d e f g h i j>.grep({ (state $set = <d g h>.SetHash){$_}--; so $set }).perl.say 01:08
camelia ("a", "b", "c", "d", "e", "f", "g").Seq
timotimo you wanted the last one, too?
Zoffix neat timotimo++
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timotimo gulps down some yucky cold medicine to celebrate 01:09
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timotimo m: <a b c d e f g h i j>.grep({ (state $set = <d g h>.SetHash); LEAVE $set{$_}--; so $set }).perl.say 01:09
camelia ("a", "b", "c", "d", "e", "f", "g", "h").Seq
timotimo phasers are so darn cool 01:10
Zoffix :D
yeah
timotimo sheesh, i feel it burn inside my belly :|
Zoffix What cold medicine are you drinking? 01:11
timotimo 18 Vol-M alcohol
Vol-%
Zoffix :o
timotimo it's "Wick MediNait"
basically a mixture of painkillers and i think something to prevent runny nose and such? 01:12
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ZzZombo I don't understand how do `==>`/`<==` work, how do they supply arguments to routines? Since from purely syntax view, `grep(*.blah)` already has it's arguments defined. What magic is this? 04:15
Is it possible to make this work as well:
m: say (1,2,3 ==> grep(* > 1) ==> succ())
camelia 5===SORRY!5=== Error while compiling <tmp>
Undeclared routine:
succ used at line 1
ZzZombo ?
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Xliff m: say (1,2,3 ==> grep(* > 1)) 05:07
camelia (2 3)
Xliff m: say (1,2,3 ==> grep(* > 1) ==> map(*.succ())
camelia 5===SORRY!5=== Error while compiling <tmp>
Unable to parse expression in parenthesized expression; couldn't find final ')' (corresponding starter was at line 1)
at <tmp>:1
------> 3(1,2,3 ==> grep(* > 1) ==> map(*.succ())7⏏5<EOL>
…
Xliff m: say (1,2,3 ==> grep(* > 1) ==> map(*.succ)
camelia 5===SORRY!5=== Error while compiling <tmp>
Unable to parse expression in parenthesized expression; couldn't find final ')' (corresponding starter was at line 1)
at <tmp>:1
------> 3y (1,2,3 ==> grep(* > 1) ==> map(*.succ)7⏏5<EOL>
…
Xliff m: say (1,2,3 ==> grep(* > 1) ==> map(*.succ))
camelia (3 4)
Xliff m: say (map(*.succ) <== grep(* > 1) <== 1,2,3) 05:08
camelia (3 4)
Xliff Just another way of saying 05:09
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Xliff m: (1,2,3).grep(* > 1).map(*.succ).say 05:09
camelia (3 4)
Xliff ZzZombo: ^^ 05:11
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lookatme m: say grep * > 1, 1, 2, 3; 05:41
camelia (2 3)
lookatme m: say grep (* > 1, 1, 2, 3); 05:42
camelia ()
lookatme m: say grep(* > 1, 1, 2, 3);
camelia (2 3)
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lookatme what happened? 05:43
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ZzZombo m: use soft;&grep.wrap(my sub(|c){c.say;nextsame});grep (* > 1, 1, 2, 3) 06:01
camelia 5===SORRY!5===
Type 'sub' is not declared. Did you mean 'Sub'?
at <tmp>:1
------> 3use soft;&grep.wrap(my sub7⏏5(|c){c.say;nextsame});grep (* > 1, 1, 2,
Malformed my
at <tmp>:1
------> 3use soft;&grep.wrap(my7⏏5 sub(|c){c.sa…
ZzZombo m: use soft;&grep.wrap(my sub (|c){c.say;nextsame});grep (* > 1, 1, 2, 3)
camelia \(({ ... }, 1, 2, 3))
ZzZombo m: use soft;&grep.wrap(my sub (|c){c.say;nextsame});say grep (* > 1, 1, 2, 3)
camelia \(({ ... }, 1, 2, 3))
()
ZzZombo m: use soft;&grep.wrap(my sub (|c){c.say;nextsame});say grep(* > 1, 1, 2, 3)
camelia \({ ... }, 1, 2, 3)
(2 3)
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lookatme m: use soft; &grep.wrap(my sub (|c){ say ($_, " -> ", $_ > 1) for c; nextsame});say grep (* > 1, 1, 2, 3) 06:16
camelia (({ ... } 1 2 3) -> True)
()
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lookatme m: say grep * > 1; 06:17
camelia ()
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lookatme m: say classify * > 1; 06:20
camelia {}
lookatme same as classify :) 06:21
some routine has slurp arguments may have the trap :) 06:23
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Geth doc/master: 12 commits pushed by (JJ Merelo)++
review: github.com/perl6/doc/compare/ba943...a51b0c2c14		 06:58
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rindolf hi all 09:23
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Zoffix lookatme: RE "what happened": `grep(…,…)` invokes the grep routine with `…,…` as args; `grep (…,…)` invokes the grep routine with *a single list* that has `…,…` in it 11:56
Ulti I think my tests just got sub 1s for the first time
\o/
0.92 so possible a ~10% speed up
Zoffix lookatme: and `grep * > 1` calls grep on an empty list; you get an empty Seq back. No trap
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AlexDaniel Ulti: since when? 14:26
comborico1611 Hey, I'm wondering if anyone could do DeMorgan's Theorm in Perl6 for me. I would do it myself, but I've been away from Perl6 for a few months, and I'm just curious of the difference between it and Common Lisp. 14:27
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comborico1611 The first equation says that if X and Y are true, then neither is X false nor is Y 14:27
false. The second equation says that if either X or Y is true, then X and Y
can’t both be false.
Oops. sorry for multiple messages. Didn't know it would do that. 14:28
In Lisp this is written as (and x y) = (not (or (not x) (not y)))
(or x y) = (not (and (not x) (not y)))
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moritz m: sub my_or($x, $y) { not (!$x) && (!$y) } 15:03
camelia ( no output )
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cfa morning 15:16
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comborico1611 moritz: thanks! 15:40
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jkramer What is 6lang? Some slang for Perl6? github.com/perl6/whateverable/wiki 16:02
AlexDaniel jkramer: 6lang.party/post/6lang-The-Naming-...ion-Update 16:03
jkramer: also: github.com/perl6/6.d-prep/tree/mas...ded-naming
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AlexDaniel jkramer: note that there's no decision yet to commit to any other name, so “6lang” is **not official at all** 16:04
jkramer: but when the blog post was published I changed references to “perl 6” in whateverable repo to 6lang, to get the ball rolling in some sense 16:05
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Zoffix m: use nqp; role R1 { has $.a; }; role R2 { has $.a; }; class C1 does R1 {}; class C2 does R2 {}; class C3 is C1 is C2 { method z { nqp::p6bindattrinvres(nqp::create(self), C2, ｢$!a｣, 42) }; method y { nqp::getattr(self, C1, ｢$!a｣) } }.z.y.say 16:09
camelia (Any)
Zoffix m: use nqp; role R1 { has $.a; }; role R2 { has $.a; }; class C1 does R1 {}; class C2 does R2 {}; class C3 is C1 is C2 { method z { nqp::p6bindattrinvres(nqp::create(self), C2, ｢$!a｣, 42) }; method y { nqp::getattr(self, C2, ｢$!a｣) } }.z.y.say
camelia 42
jkramer Ah so it's just Perl 6? Got me confused for a second :)
Zoffix So I have two $!a attrs in my class then. Any way to block one of them? So if anyone does `nqp::getattr(self, C2, ｢$!a｣)` it crashes and say You Shall Not Pass? 16:10
jnthn Zoffix: Attrs are qualified on class *and* attribute name. That's why getattr needs both
yoleaux 00:15Z <Zoffix> jnthn: any tips for fixing this bug: `m: say &min ~~ Callable; #`(False) &min.^compose; say &min ~~ Callable; #`(True)` Some new commits went in that tickle it and that's currently marked as a release blocker. I can only think of something nutty like collecting all the traited subs and then .^composing it at the end of setting
00:16Z <Zoffix> jnthn: For context, the breakage is caused by `is pure` mixing in a role before Callable is fully composed. It's github.com/rakudo/rakudo/issues/1566
00:21Z <Zoffix> jnthn: and nother hack I can think of is mixing in `role is-pure does Callable` instead of just `role is-pure`. Dunno how much evil it is to have a role (Callable) mixed in from two places like this is; `say &min.^roles; # ((is-pure) (Callable) (Callable))`
01:53Z <Zoffix> jnthn: Another idea that promised to be OK, but ran into hacky category (mentioned in commit message): github.com/rakudo/rakudo/commit/3506395576 The start of src/core/traited-routines.pm6 file added there does .^compose on methods [missing BEGIN block]. Is it too much do go through all methods of all types defined by that point and do .^compose on anything that !~~ Callable?
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jnthn Nothing anywhere in the implementation thinks they're related just because they have the same unqualified name. 16:11
So no, nothing you can really do...what're you trying to solve?
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Zoffix jnthn: experimenting with adding another class for non-infectious FatRat: `my class MuskRat is Rat is FatRat`. Was just thinking defensively in case some future dev writes `nqp::bindattr(self, Rat, ｢$!numerator｣)` instead of `nqp::getattr(self, FatRat, ｢$!numerator｣)`, but it's not uber important 16:13
jnthn Maybe inheritance is the wrong tool and the Rational role is enough? Maybe not though :) 16:14
Zoffix No idea. Just started :) Seeing how well it'll play as a Rat-FatRat allomorph 16:15
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Zoffix jnthn: Is doing `BEGIN { for Any, Iterator, Positional, Associative, Iterable, [... bunch of other classes..] -> \T { for .^methods».name { (my \M := T.^lookup: $_) ~~ Callable and next; M.^compose }` at some point in the SETTING really crazy? 16:19
That's what that flurry of bot messages ended with basically.
jnthn Zoffix: Yeah, I need to look at that a bit more carefully to answer, but am juggling a few other tasks at the moment /o\
Zoffix No problem :)
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jnthn releasable6: next 16:20
releasable6 jnthn, Next release in 10 days and ≈2 hours. Blockers: github.com/rakudo/rakudo/issues?q=...%9A%A0%22. Changelog for this release was not started yet
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rindolf hi all 17:04
Zoffix: here?
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rindolf lizmat: here? 17:07
El_Che rindolf: they are trying to figure out why pypy is so fast :)
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rindolf El_Che: heh 17:07
El_Che: it is due to alicorn magic 17:08
El_Che probably alicorn magic is why it hasn't replaced cpython as the to-go-python
rindolf El_Che: heh 17:09
thanks for everyone's help so far! Very impressive 17:11
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Zoffix rindolf: what 17:15
rindolf Zoffix: the code with lizmat 's change runs faster butis only aboyut twice the speed of the p5 version 17:17
Zoffix "only about twice faster"? Wasn't the original like a billion times slower? 17:19
rindolf Zoffix: yes 17:21
Zoffix: but i thought your version was faster too
Zoffix rindolf: is Token still an optional parameter? Make it mandatory 17:22
timotimo it'd be a bunch faster if you precompile the primes list %)
Zoffix That too :)
rindolf Zoffix: ok 17:23
timotimo .o( or maybe we can make parsing of long lists of integers faster or something )
rindolf Zoffix: g 17:26
Zoffix: how can i convert $aa to Str?
timotimo you mean like $aa.Str? 17:27
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rindolf timotimo: maybe 17:27
El_Che rindolf: interesting stuff you're doing. WHat's the context? Teaching? Curiosity?
Zoffix rindolf: why do you need to? Just remove the default value from Token parameter
rindolf This type cannot unbox to a native integer: P6opaque, Str
Zoffix: I added a type sig 17:28
Zoffix Why?
rindolf Zoffix: wow - now it runs at 7s
which is 3 times faster than p5 17:29
Zoffix: ok, i didnt eventually
Zoffix cool
El_Che to be fair, you should compare it with not-quite-perl5 :) 17:30
rindolf Zoffix: token is a string
El_Che impressive to see how stuff can be optimized
rindolf Zoffix: or should be
Zoffix: your gist has no licence :( 17:33
Zoffix rindolf: considering the amount of unsupported, perf-optimized hackish code you got in that program, the "should be" for type of Token seems to be the most irrelevant of the concerns.
rindolf: it's like driving this i.ytimg.com/vi/TP_u23IneEY/maxresdefault.jpg and worrying about the size of the glove compartment. 17:34
timotimo save a hundred or two hundred cpu cycles by only encoding the token once and printing it as binary after that 17:35
Zoffix rindolf: that gist is in public domain
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rindolf Zoffix: ah, is it derived from my original code? 17:36
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Zoffix rindolf: from P5 version, yes 17:37
rindolf: then I guess it's not public domain, but whatever the license for that P5 version allows
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rindolf Zoffix: ok, let me add it back 17:37
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rindolf Zoffix: see github.com/shlomif/euler-618 17:41
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Zoffix mhm 17:43
rindolf Zoffix: thanks for your help 17:44
Zoffix \o 17:45
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rindolf timotimo: how can we precompile the primes? 17:48
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timotimo put them into a module 17:49
rindolf timotimo: ah 17:52
timotimo: in a seperate file? 17:53
timotimo yes
it has to be "use"d
rindolf timotimo: ah
timotimo but feel free to put the whole code into a module and just "use" it to run it
maybe with a sub MAIN is export
rindolf timotimo: ok
timotimo: so programs are not precompiled? 17:54
timotimo correct
rindolf timotimo: i see
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timotimo you can see how long it takes to compile with --stagestats 17:54
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pmichaud good afternoon, #perl6 18:07
[Coke] pmichaud: Hi!
rindolf timotimo: now it is down to 5s 18:08
pmichaud: hi, sup?
18:09 konsolebox left
pmichaud soooooo... the hosting service I use (the one that hosts rakudo.org) is shutting down in a month. 18:09
So I'm trying to see if someone wants to host rakudo.org somewhere else, or if I should migrate rakudo.org to my new provider along with the rest of the sites I'm doing. 18:10
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timotimo rindolf: used to be 7, right? 18:13
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rindolf timotimo: yes 18:15
pmichaud: what does it run?
pmichaud rindolf: currently WordPress, I think.
timotimo what's the factor over perl5 now? 18:16
pmichaud I don't think we run any other services on rakudo.org other than WP
rindolf pmichaud: ah
pmichaud: perhaps see github.com/metacpan/metacpan-puppet/issues/137 18:17
timotimo: 4 times faster
timotimo: well, a little less than that 18:18
timotimo: github.com/shlomif/euler-618 - here 18:19
pmichaud this might also be a good time to address RT #128423
synopsebot RT#128423 [new]: rt.perl.org/Ticket/Display.html?id=128423 [SITE] rakudo.org doesn't work, rakudo.org/ does
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Zoffix pmichaud: I could host, if you want. 18:32
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Zoffix flicks through the content 18:35
Or we could pare it down to the basics and host on www.p6c.org 18:36
(basics => not WP, but some basic perl-based front-end to a few markdowned announcements; the stuff that powers rakudo.party would do just fine) 18:37
Well, on www.p6c.org server, I mean, with rakudo.org just pointing to a virtual host. 18:38
Bunch of pages look to be fairly outdated, like the whole thing about tickets and how to find tickets 18:40
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masak hi, pmichaud 18:44
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masak er, I mean 18:53
pmichaud! \o/
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pmichaud well, the server officially dies on Apr 15; and I'm out of pocket Mar 14-Apr 1 except for email and hotel room wifis. :) 18:55
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Zoffix pmichaud: I can get something up on www.p6c.org in 9hr. Gonna go through all teh content on rakudo.org and move what's still useful. And we'll see then if that's a suitable option. 18:58
|4hr rakudo.org stuff
|4h rakudo.org stuff
ZofBot Zoffix, Will remind you on 2018-03-07T17:58:56.151365-05:00 about rakudo.org stuff
masak ZofBot++ 18:59
pmichaud Zoffix: sounds fantastic, thanks. 19:00
moritz pmichaud: we'll likely need an SQL dump of the wordpress db; could you please provide one?
AlexDaniel Zoffix++
moritz also \o/ pmichaud! :-)
pmichaud I think rakudo.org (my server) has also been hosting the downloadable tarballs and images for rakudo, nqp, and star 19:01
moritz Zoffix: is your plan to maintain wordpress (as rakudo.org uses now), or do something else?
masak here's hoping for many hotel room wifis ;)
pmichaud masak! \o/
moritz! \o?
er,
\o/!
masak haha
pmichaud (can't type today)
masak \o? is a person half cheering and half scratching eir head 19:02
pmichaud Zoffix: yes, I can get an SQL dump of the wordpress db
masak with a pirate hook
masak .oO( Max! o/ und Moritz! o? ) 19:03
pmichaud partially related: Just saw this over the weekend at the robotics competition here in Dallas: www.youtube.com/watch?v=Vt8dbfgbRJs
moritz pmichaud: while you're here, let me just say thank you for all of stuff I learned from you during your active time here 19:04
pmichaud: I turned some of that into a book :) smile.amazon.com/dp/1484232275/
Zoffix moritz: seeing as we don't have a "blog" there, I was going to use the perl6.party engine, which is just a small Mojolicious-based front-end for rending markdown docs: github.com/zoffixznet/perl6.party/...ter/app.pl and github.com/zoffixznet/perl6.party/...y/Posts.pm
masak pmichaud: yes, I can see the connection ;) 19:05
Zoffix moritz: and my plan does not include maintaining release announcements from 2010. I'll go through the posted posts more thoroughly, but ATM looks like it's like 99% release announcements.
moritz Zoffix: ok, makes sense 19:06
masak pmichaud: I'd like to second moritz' thank you, although my book is still forthcoming ;)
pmichaud moritz: it's been my pleasure. I do hope to get back to p6 someday in the not-too-distant-future 19:07
Indeed, I already know of a couple of projects I'm planning to do in p6.
moritz Zoffix: I'd also be happy to add apache rewrite rules that catch the old URLs, and redirect them to the github view of the release notes (they are still in the rakudo repo) 19:08
Zoffix good idea
pmichaud moritz: wow, congrats on the book. Now I have to buy a copy so I can learn how p6 regexes work. :) 19:09
Zoffix :)
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moritz pmichaud: thanks. I'd be also happy to send you a copy if you /msg me your mailing address 19:11
pmichaud address sent 19:16
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tadzik pmichaud! \o/ 19:19
pmichaud tadzik! \o/ 19:20
tadzik what a happy day :) 19:21
masak o frabjous day! calooh, callay! 19:22
tadzik kion bonan tagon! 19:23
masak senhezite! 19:25
El_Che sounds like esperanto?
masak aye 19:27
ial tadzik decidis studi ĝin, kaj mi ne kuraĝis malpermesi lin 19:28
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tony-o m: my Num $a = 0.Num; $a += .1.Num for 0..225; $a.fmt('%.17f').say; 19:29
camelia 22.60000000000010000
tony-o m: my Num $a = 0.Num; $a += .1.Num for 0..224; $a.fmt('%.17f').say;
camelia 22.50000000000000000
tadzik :) 19:30
[Coke] tu'HomI'raH SoH 'e' Sov wo' 19:31
El_Che it's all readles to me, but good luck pmichaud with all the plans you have!
tadzik is that klingon? :) 19:32
masak I daresay it is
Zoffix tony-o: 0.1 can't be represented exactly in floats
Also, we have some (Num parsing/Num stringification) bugs that mess with f.p. noise too 19:33
[Coke] If you have to ask if it's Klingon, then it's directed at you. :)
El_Che This seems to work: www.translator.eu/english/klingon/translation/ :) 19:34
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Zoffix RT#132329 RT#128914 RT#128817 RT#128818 RT#128819 19:34
synopsebot RT#132329 [open]: rt.perl.org/Ticket/Display.html?id=132329 [MATH] Rat → Num conversion isn’t monotonous
RT#128914 [new]: rt.perl.org/Ticket/Display.html?id=128914 [BUG] decimal->float conversion differs for literals and Str.Num 19:35
[Coke] it's close. "You're a disappointment to the Empire!"
synopsebot RT#128817 [open]: rt.perl.org/Ticket/Display.html?id=128817 [BUG] Num.perl doesn't round-trip numeric value
RT#128818 [open]: rt.perl.org/Ticket/Display.html?id=128818 [BUG] sprintf %f bogus rounding
RT#128819 [new]: rt.perl.org/Ticket/Display.html?id=128819 [BUG] Num.WHICH doesn't discriminate enough
tony-o ty @zoffix
TEttinger Arog qabu dheer haakhigaw, haquggiika dhoshaa?
masak [Coke]: "You're a disappointment to the Empire"? 19:36
[Coke] ... yes (are you repeating what I said to verify, or asking having missed that I just said that?) 19:37
masak TEttinger: L...Lovecraftian...?
tadzik . o O ( you can speak klingon in any language )
masak [Coke]: missed it :)
tired :)
[Coke] I found one page on the internet with TEttinger's quote in it.
TEttinger masak: that one's made up, this one's what it's imitating:
Sida dhabta ah cuntada waa shidaalka dhabta ah ee dadka sida uu u yahay batroolka shidaasha baabuurka, ama naftadu u tahay shidaasha makiinadaha waaweyn.
[Coke] good guess, then!
Zoffix The parsing bug might've been about Rats, not Nums, now that I think of it. Can't find the ticket. 19:38
TEttinger masak: close, Somali
clearly Rl'yeh is off the coast of the Horn of Africa
masak .oO( Ch'thomali )
TEttinger I've had people say that the generated imitation, and real, Somali both look random keyboard keys 19:39
so.wikipedia.org/wiki/Bogga_Hore 19:40
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TEttinger it's interesting to me that Somali doesn't use any diacritics, it just uses English letters in unusual ways 19:41
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TEttinger the Lovecraftian stuff is at the top of that page, I found it. it imitates about 30 I think 19:46
masak ok, ok, how about this one: "Oumpeá äx’ääļuktëx"
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TEttinger Alien_U? 19:48
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TEttinger Opāi ma pitou ma ongua tei? 19:49
nope, not one of my generated ones, close though. probably lithunian 19:51
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huf there's an _enormous_ advantage to not needing things beyond ascii to write your language 19:51
TEttinger malay
huf so i applaud the somali for being sensible in this
TEttinger they fought a war over it 19:52
huf oh, i take it back :D
it's not worth an entire war
TEttinger sensible, mostly
well it kinda was
huf maybe a third of one
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TEttinger it determined who they would trade with, saudi arabia and egypt, or the west 19:52
they had just overthrown another government and there were two groups of revolutionaries with different ideas on modernizing the language and culture 19:53
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tony-o what war was that TEttinger ? 20:04
or, when was that
TEttinger I've mostly read about the language parts, I think 1960s or 1970s
tony-o maybe the coup in 1969 ? 20:05
TEttinger A number of writing systems have been used over the years for transcribing the Somali language. Of these, the Somali alphabet is the most widely used, and has been the official writing script in Somalia since the Supreme Revolutionary Council formally introduced it in October 1972 20:07
en.wikipedia.org/wiki/Somalia#Languages 20:08
tony-o en.wikipedia.org/wiki/1969_Somali_...7%C3%A9tat
the Aftermath section talks about how that came about 20:09
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Zoffix What do I need to read to understand how attribute/method resolution works when using multiple roles/classes? 20:13
m: my class MuskRat2 does Rational[Int, Int] is FatRat is Rat {}; say MuskRat2.new(1, 2).perl;
camelia No such method 'Stringy' for invocant of type 'NuT'
in block <unit> at <tmp> line 1
Zoffix I'm trying to make a type is a Rational with it's own denominator/numerator, but I also want it to typecheck for Rat and FatRat, but I keep hitting issues like that ^ and I don't know if it's just a bug or what. 20:14
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moritz inheriting both from Rat and FatRat seems strange 20:17
Geth doc: 375d6d6061 | (Zoffix Znet)++ (committed using GitHub Web editor) | doc/Language/classtut.pod6
Link to Wikipedia to explain what C3 is
synopsebot Link: doc.perl6.org/language/classtut
moritz but removing "is Rat§ doesn't solve the problem
Zoffix moritz: why?
moritz Zoffix: because they have conflicting behavior
you can't satisfy the Liskov principle for both classes with one single subclass 20:18
Zoffix moritz: I want a Rat/FatRat allomorph that'd behave as one or the other depending on which context is used.
moritz: which behaviour is conflicting that Liskov would be violated? Considering they barely have any methods of their own 20:19
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moritz Zoffix: is $FatRat + $MuskRat going to be consistent with Rat or with FatRat? 20:20
Zoffix: whatever it is, it will be inconsistent with the other behavior
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moritz Zoffix: regarding the error message, I think it is a bug; I also think you are confusing rakudo by creating a class that has the Rational role applied three times 20:22
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Zoffix moritz: FatRat is an infectious type, the result of that expression is a FatRat. Regardless of whether $MuskRat is a Rat or a FatRat, the result is the same... 20:24
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moritz Zoffix: oh, then Rat + MuskRat is the more interesting case 20:25
it can either return something compatible with Num or a {Musk,Fat}Rat 20:26
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Zoffix moritz: I don't see how that's a strange violation of Liskov, yet `Rat + Num` vs `Rat + Int` isn't. Num and Int are both Cool objects, for them to be strictly Lisovy, they result would have to be the same, no? Yet, one type is defined as more infectious than the other; and same applies to MuskRat 20:29
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Zoffix Or, a tighter relation. 0 is false, "0" is true, so what's the result for <0>, which is an IntStr allomorph? 20:30
moritz yes, that is also a Liskov violation
Zoffix That's what I'm trying to make tho, a FatRat/Rat allomorph 20:31
moritz I don't see it for Rat + {Int,Num} though, because they are not subclasses of each other
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moritz Zoffix: so, what do you want the result of Rat + MuskRat to be? 20:32
Zoffix A Rat
A MuskRat merely provides more precision for operations with FatRats
otherwise it acts like a Rat 20:33
moritz ok 20:34
I think you can leave out the 'does Rational[Int, Int]' part, because inheriting from FatRat already gives you that
Zoffix Yeah, I had that and it was having similar issues with some methods. 20:36
Zoffix tries againb
20:36 itaipu left
Zoffix hm, I think I had `my class MuskRat2 is Rat is FatRat {};` but did `my class MuskRat2 is FatRat is Rat {};` now and so far seems to work 20:37
Zoffix reads up on what C3 is 20:38
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Zoffix Oh lightbulb moment. now I get it \o/ 20:42
Also, this page could use a Perl 6 example. The Python example starts of by blabbing about metaclasses and Python 3 and stuff: en.wikipedia.org/wiki/C3_lineariza..._in_Python
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Zoffix m: class A {}; class B {}; class C {}; class D {}; class E {}; class K1 is A is B is C {}; class K2 is D is B is E {}; class K3 is D is A {}; class Z is K1 is K2 is K3 {}; say Z.^mro 20:44
camelia ((Z) (K1) (K2) (K3) (D) (A) (B) (C) (E) (Any) (Mu))
Zoffix Much simpler example :)
Zoffix adds it 20:45
wonder if `<syntaxhighlight lang="perl6">` works 20:47
sena_kun a stupid question, but I bump into it once in a while after haskell's `or [True, False, True, ...]`. e.g. I have a list of Bools, is there a neat way to do `and` or `or` on it? Am I looking for `reduce`?
m: say (True, False).reduce(&[&&]) 20:48
camelia False
sena_kun m: say [&&] (True, False)
camelia False
sena_kun neat enough. \o/ 20:49
Zoffix boom: en.wikipedia.org/wiki/C3_lineariza..._in_Perl_6 20:50
Zoffix relocates
moritz++ for help
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Zoffix sena_kun: BTW, another tool for your question: Junctions. Lets you also figure out if only one is true or all are true etc 21:12
m: say (0, 1, 1).any.so
camelia True
Zoffix m: say (0, 1, 1).all.so
camelia False
sena_kun Zoffix, ah, indeed, `so @a.all` will do the trick too.
thanks. 21:13
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AlexDaniel : say so all (0, 1, 1) 21:15
m: say so all (0, 1, 1)
camelia False
Zoffix m: say ?all 0, 1, 1 21:16
camelia False
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lichtkind the link to staging module on docs.perl6.org/language/modules-core.html doesnt work 22:01
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dogbert17 lichtkind: just tried it with FF and it works for me 22:16
scratch that, I did read correctly 22:17
*didn't
ok, if you change the last part Staging.pm -> Staging.pm6 it should work 22:19
Geth doc: ba20a48bce | (Zoffix Znet)++ (committed using GitHub Web editor) | doc/Language/modules-core.pod6
Fix URL to module
 22:21
synopsebot Link: doc.perl6.org/language/modules-core
dogbert17 Zoffix is quicker than lightning :-) 22:22
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jimav Hi. Is there a command-line tool to view p6 pod? Like p5's "perldoc" command does? "perl6doc" does not seem to want to format an arbitrary (command-line-specified) file. 23:00
timotimo you'd perl6 --doc Blah.pm6 23:04
you can pass the name of a module to --doc, for example --doc=Markdown would look if you have a module Pod::To::Markdown installed and use that for output
jimav: ^
23:05 lichtkind left
jimav I meant if I have just a file, say "foo.pod", can I view it pretty-printed on my terminal? 23:05
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jimav Not a p6 module 23:05
timotimo that'd be the same 23:06
(it'll execute BEGIN-phasered code, though. and DOC-phasered code as well)
jimav Example: rakudo-star-2018.01/nqp/docs/jvminterop.pod (in the tarball)... 23:07
perl6 --doc <that path> just prints a compiler error 23:08
Unable to parse native definition at /home/jima/ptmp/downloads/rakudo-star-2018.01/nqp/docs/jvminterop.pod:3
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timotimo hm, it would probably expect it to begin with =begin pod or something 23:19
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Geth doc: 190a1f3503 | (Will "Coke" Coleda)++ | doc/Type/IO.pod6
fix quoting
 23:26
synopsebot Link: doc.perl6.org/type/IO
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Zoffix jimav, that's a Perl 5 pod 23:35
perldoc rakudo-star-2018.01/nqp/docs/jvminterop.pod
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Zoffix pmichaud: (I think my promise of "in 9hr" rakudo.org alternative was too eager and didn't account my sleeping only 4hr last night; I'll extend it to "in the next 72hr") 23:56

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