»ö« Welcome to Perl 6! | perl6.org/ | evalbot usage: 'perl6: say 3;' or rakudo:, niecza:, std:, or /msg camelia perl6: ... | irclog: irc.perl6.org | UTF-8 is our friend!
Set by sorear on 25 June 2013.
raydiak mvuets: thanks for jumping in and fixing things...glad to have you here :) 00:04
tony-o invalid status 297373760 in GC orchestrate 00:12
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jnthn masak: In answer to "when a class A keeps calling into class B..." - feature envy. 00:43
mvuets sleep & 00:51
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timotimo tony-o: can you build your moarvm with ASAN? and before that, maybe turn on MVM_DISABLE_JIT (set it to some non-empty value) or MVM_DISABLE_SPESH 01:38
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[Coke] notes we have a bunch of flappy tests commented out of t/spectest.data 02:08
test -files-, I mean. 02:09
jdv79 flabby or flappy?
[Coke] we should probably re-enable those immediately after the release.
flappy == pass/fail "randomly" 02:10
dalek kudo/nom: 1385296 | coke++ | tools/update (2 files):
prefer -'s

  (most of the other tools use -, not _)
02:12
[Coke] jnthn++, moar looks much better today.
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dalek rl6-roast-data: d275310 | coke++ | / (4 files):
today (automated commit)
02:36
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tadzik moritz: we should synchronize one day and set up this service properly 03:37
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ugexe language: perl 04:04
perl:
- '5.20'
env:
- BACKEND=moar PANDA_SUBMIT_TESTREPORTS=yes
- BACKEND=jvm PANDA_SUBMIT_TESTREPORTS=yes 04:05
- BACKEND=parrot
matrix:
allow_failures:
- env: BACKEND=jvm
- env: BACKEND=parrot
fast_finish: true
before_install: - git config --global user.name "TravisCI" - git config --global user.email $HOSTNAME":not-for-mail@travis-ci.org" - git clone git://github.com/travis-perl/helpers ~/travis-perl-helpers - source ~/travis-perl-helpers/init # helpers for parallel testing/testing dirs - git clone github.com/tadzik/rakudobrew ~/.rakudobrew
oops, sorry
TimToady ugexe: if you're using irssi you can set paste_verify_line_count = 1 and it'll ask if you really mean it 04:23
ugexe another notch on the ol irssi config 04:31
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moritz tadzik: first step: put the code into a git repo, give me the URL 06:34
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dalek p: 817019e | TimToady++ | src/QRegex/NFA.nqp:
delete SUBRULE edges after use

Added a better NFA dumper. Using this, I discovered that the NFA engine was spending 6-7% of its time just ignoring subrule edges. These edges are not used after subrules are merged, so they can be spliced out before the NFA engine ever sees them.
08:55
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dalek p: b1cecf6 | TimToady++ | tools/build/MOAR_REVISION:
bump moar
08:59
kudo/nom: 25796d2 | TimToady++ | tools/build/NQP_REVISION:
bump nqp
09:00
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JimmyZ_ TimToady: the above commit increases Stage parse : ~62s -> 63.711s here 09:12
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TimToady do you have anything running in the background? ran faster here, once I stopped firefox... 09:17
JimmyZ_ TimToady: Nope, I exited all things 09:18
and ran it twice to confirm it 09:19
TimToady interesting... 09:20
maybe splice is slow on your machine for some reason...
JimmyZ_ Win32 on X86 without jit 09:21
let me try the old one again 09:22
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TimToady zzz & 09:36
lizmat gnight TimToady
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lizmat fwiw, I'm not seeing much difference in parse times 09:36
JimmyZ_ TimToady: sorry, it's not the above commit, but I can't ~62s now 09:37
*can't get back
TimToady well, at best it would be about a 1% improvement, since the nfa is only about 10% of the parse time 09:39
but there's still a bunch of improvements that can be made, lots of useless epsilons and such that can be eliminated 09:40
zzz really &
JimmyZ_ good night 09:55
dalek kudo/newio: 1385296 | coke++ | tools/update (2 files):
prefer -'s

  (most of the other tools use -, not _)
09:56
kudo/newio: 25796d2 | TimToady++ | tools/build/NQP_REVISION:
bump nqp
kudo/newio: dd6fc0a | (Elizabeth Mattijsen)++ | tools/ (3 files):
Merge branch 'nom' into newio
kudo/newio: 0f4ec52 | (Elizabeth Mattijsen)++ | src/core/PIO.pm:
PIO.say should return True, not 1
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masak antenoon, #perl6 10:46
jnthn: re "feature envy" -- I suspected so. but, so the "feature" here is the control flow itself? 10:47
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smls o/ 10:53
Happy Advent Sunday, #perl6! 10:54
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moritz \o 11:00
so far we have only one sign-up for the advent calendar
that's too few
I can probably write a "State of Perl 6" for tomorrow
but we need more, otherwise it won't work 11:01
dalek : 069bb68 | moritz++ | misc/perl6advent-2014/schedule:
[perl6advent] claim day 1
mvuets \o/ 11:02
a pleasant surprise - didn't realize it starts so soon 11:03
moritz it only starts if people commit to contributing
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smls
.oO( idea for an advent calendar post: the special global-ish dynamic variables $*OUT, $*ERR, $*CWD, $*TMPDIR, $*HOME, $*SPEC, $*SCHEDULER etc. and how they can make things more flexible/clear/convenient than in Perl 5 )
11:04
moritz smls: sign up and write about it! 11:05
smls I'm not qualified enough
moritz sure you are
just pick those (sub)topics that you know a bit 11:06
smls I'll think about it
moritz ++smls 11:07
timotimo i wish gtk-simple wasn't broken >_< 11:10
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smls How come the gtk-simple repo is part of the official perl6 org on github? What's so special about it? 11:12
masak enjoyed www.slideshare.net/ScottWlaschin/fp...ildstufflt 11:14
timotimo smls: it was part of a repository jnthn had made for one of his talks, i extracted it for him, but didn't think it'd be fitting to put it under timo/ 11:17
moritz smls: also people can put repos in the perl6 org if they want everyone[tm] to have write access 11:19
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mvuets what is the state of Test.pm? 11:22
is there a reference implementation?
moritz mvuets: there's a Test.pm shipped with rakudo
mvuets it spits warnings 11:23
wondering if worth fixing
moritz mvuets: what kind of warnings?
mvuets because: ## This is a temporary Test.pm to get us started until we get pugs's Test.pm / ## working. It's shamelessly stolen & adapted from MiniPerl6 in the pugs repo.
moritz seems it has evolved into a full one by now, with the comment being out of date 11:24
mvuets skip_rest emits this: use of uninitialized value of type Any in numeric context in sub skip_rest at lib/Test.pm:192
yeah, seems so. pugs' one does not even have subtest()
moritz still something more structured (see Test::Builder in p5) wouldn't be bad
mvuets: yes, worth fixing
mvuets so the testing api is defined in s24. does it mean Test implementation is up to language vendors? 11:25
moritz mvuets: correct 11:26
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dalek kudo/nom: a9d4c84 | masak++ | lib/Test.pm:
[Test.pm] remove outdated comment
11:26
moritz mvuets: though of course language implementors are free to still from other language implementors (as far as license allows it)
mvuets hmm, do i understand it right that cannot be a Test distro on CPAN6 then?
dalek kudo/nom: 91d8995 | masak++ | lib/Test.pm:
[Test.pm] update copyright date
11:27
moritz mvuets: well, not right now, though we do plan to support loading modules by authority (not just name)
timotimo maybe it'd be good enough to hotfix the GTK::Simple module so that i can guarantee it works for the advent calendar
but what cool thing could i build with it? :S
mvuets another question: perl6/roast.git seems missing subtest() tests - shall i try writing some? 11:28
moritz mvuets: yes please 11:29
timotimo: do you know anything about the run time performance of r-j vs r-m?
mvuets and how much we care for having smartlinks (those nifty things linking tests back to specs and hence embedding code examples in synopsis-es)? 11:30
moritz mvuets: not very much, at the moment
timotimo moritz: no :(
i haven't touched r-j in a long time
mvuets ok. because i found much with --check and TODO actually mentions it 11:31
masak who's doing Dec 1 in the Advent calendar? :) 11:33
moritz masak: me
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masak great 11:35
ahh, but the schedule is far too empty for next week -- github.com/perl6/mu/blob/069bb68e7...4/schedule
moritz masak: agreed 11:36
masak preferably we should have all of next week, and preferably coming weeks, planned out by the end of today...
moritz masak: so, sign up :-)
masak ok, I can volunteer for one or two slots for next week.
just gotta figure out what to write about.
"Perl 5/Perl 6 comparison" sounds like a topic I could do. 11:38
moritz masak: also a summary of your current macro musings would be intersting 11:39
masak yes, but that would work better towards the end of the month, as I expect to have mused quite a bit more by then. 11:40
tadzik moritz: it's on github.com/perl6/ecosystem/tree/master/server 11:44
moritz tadzik: ok, great
tadzik I'll see how out of date it is, but probably not too much
it says 2 years ago 11:45
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dalek osystem: 82861f8 | tadzik++ | server/ (2 files):
Update the module server
11:48
tadzik now it's up-to-date :)
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moritz tadzik++ 11:51
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moritz huh, perl6-m startup time is 330ms here 11:53
wasn't it down to 150ms or some months ago? 11:54
JimmyZ_ moritz: yeah, re-added the eager de serialization due to some precomp bug
moritz :( 11:55
jnthn And introduced a different bug in the process, no? 11:56
jnthn doesn't know what to write about for advent
Don't think I can find time for a post in the first week (too much work/distractions) 11:57
But can do something after that.
moritz jnthn: you could always do a summary of what you worked on, or an example from some of the talks you gave, or a braindump what you're working on 11:58
JimmyZ_ jnthn: yeah
jnthn Is this the first advent we've had with Rakudo on Moar?
moritz it would be awsome if we could get our GSoC students to write about their projects for the p6advent
jnthn: yes 11:59
jnthn Hah!
moritz jnthn: I just checked, last year's "state" post said nqp was bootstrapped on MoarVM, but rakudo wasn't running on it
jnthn Then maybe I should write one about MoarVM :)
moritz jnthn: you should :-)
jnthn I know a little about it already, after all... :)
timotimo we could have a post that we can point annoying naysayers to who say "oh, when's perl6 going to be rewritten from scratch the next time? next week and the week after that again?" 12:02
as in "how do we know MoarVM is The One™" 12:03
moritz gist.github.com/moritz/7df64717d8dd772a87a0 # preview of the first advent post, feedback welcome
afk 12:04
dalek : 3095993 | masak++ | misc/perl6advent-2014/schedule:
[adv2014/schedule] claim two slots
masak others: please claim advent slots for next week!
masak does Uncle Sam pointing-to-YOU pose 12:05
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timotimo moritz: i wouldn't say moarvm is significantly faster at run time against the JVM. i think the jvm gets pretty good when it's heated up. especially for native stuff and tight code 12:05
masak moritz: s/de-factor/de facto/
moritz: s/supported as a backend/supported as backends/ 12:06
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ab5tract o/ #perl6 12:07
yoleaux 24 Nov 2014 18:59Z <tony-o> ab5tract: fixed the HTML::Parser::XML module, it works as expected and it works with the advent sample ugexe provided
smls moritz: "make the list-y types more transparent, list iteration faster, and more transparent when a list will flatten" -- maybe avoid repetition of 'transparent'
timotimo would suggest not using "more transparent" twice
%)
masak maybe not repeat "transparent" in the sentence? :) 12:08
masak suggests less repetition
ab5tract so i was reading about the shortfall of advent entries
in the logs
smls moritz: s/will in some details/will fill in some details/ 12:10
timotimo ab5tract: would you like to contribute? :)
ab5tract i have some stuff written about the difference between set coercers vs composers in relation to sets
ab5tract suggests to himself less repetition for himself 12:11
timotimo: indeed. my goal was to have an async scraper for the advent calendar with a ncurses interface 12:12
but i've been repeatedly stymied on that front. it boils down to weird things happening at the HTTP::UserAgent layer.. I could try replacing it with LWP::Simple 12:13
masak ab5tract: please claim a slot in github.com/perl6/mu/blob/master/mi...4/schedule
timotimo ugh, ncurses 12:14
ab5tract timotimo: :) ... but it's a well-known library that can highlight NativeCall while also potentially wow-ing folks if one were to put an async-y layer over the top 12:16
timotimo mhm mhm
don't forget ncurses is not reentrant :)
ab5tract i doubt ncurses would ever let me forget it :) 12:18
masak: pull request sent
itz lose the Oxford Comma :)
timotimo that reminds me i wanted to build a nice high-level console UI library thingie
dalek : a907f24 | ab5tract++ | misc/perl6advent-2014/schedule:
Update schedule
: 0323a69 | 唐鳳++ | misc/perl6advent-2014/schedule:
Merge pull request #5 from ab5tract/patch-1

Update schedule
timotimo with all the features of ANSI5
ab5tract timotimo: pure perl? 12:19
audreyt moves quickly :)
another thing i can discuss are the (potential) changes to the set comparison operators, of which my patch is sitting in limbo because i get distracted easily 12:20
timotimo pure perl, aye
ab5tract timotimo: that sounds like fun. hoelzro and i were discussing the repl environment, and "wouldn't it be nice to have an simple plugin interface" 12:22
timotimo to be honest, "pure perl" tends to mean "moarvm with asynchronous IO and multithreading" these days :P 12:23
ab5tract timotimo: i thought that was the whole point of perl 6 :P 12:24
ah, i see what you mean.. the moarvm bit
timotimo that or JVM
but as i said, i haven't touched that in a while
psch wonders if it makes sense to make perl6-bench use the evalserver 12:25
ab5tract it feels a bit undernourished, that backend. but that's a surface level observation.. i've never seen a blog post about NativeCall on JVM, for instance. i thought it would be fun to write an interface to Processing, but didn't get much farther than imagining it
timotimo psch: perl6-bench already subtracts start-up and compile times from benchmarks 12:28
psch timotimo: okay. but vm-warmup is a big-ish thing on jvm, isn't it? i guess i'd have to look how perl6-bench does it's benching in the first place 12:29
JimmyZ_ jnthn.net/papers/2014-yapceu-performance.pdf said while-empty was 4x slower than perl5, I think now they are the same :P
psch i guess that's actually the point of good benchmarks, to have code that will be optimized well eventually 12:30
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psch huh, ./bench fails with "Missing or wrong version of dependency 'src/gen/m-BOOTSTRAP.nqp'" but the same perl6 from my env works when called directly..? 12:34
JimmyZ_ make clean in rakudo ...
and then rebuild 12:35
psch yeah, i've nuked install/ and ran git clean -xdf
timotimo psch: running a rakudo-j benchmark with all tests takes a LONG time. 12:36
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psch timotimo: oh, i expect that - i don't really plan to run everything, i just want to have a hint re: mvm vs jvm on one or two tests 12:37
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timotimo ah, so like --tests-tagged or --tests? 12:38
ab5tract timotimo: if it takes so long, it surely should use the evalserver ? 12:39
psch uh, probably? i haven't looked too closely yet at how i have to use perl6-bench... :)
timotimo the problem with the evalserver is that jit warmup is potentially shared 12:40
which would make the calculations be off
ab5tract ah 12:41
timotimo it'd be impossible to remove it just by subtracting timings and startup timings etc
ab5tract speaking of the spectest... is verbose output stored anywhere? 12:42
psch heh, maybe advocating the use of jakudo as a service is a good idea, then we can publish evalserver p6bench and claim that's real-world-use... :)
s/service/daemon/
timotimo you can run the "mumblemumble_summary" script to get verbose output 12:43
ab5tract find . | grep mumble # nothing 12:45
timotimo yeah, "mumble" stands for "something i don't remember" 12:49
ab5tract :P
mvuets haha 12:50
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ab5tract what's the invocation for running a single test with harness? the quicker i can get the set comparator patch working, the sooner i can write a "how to start hacking on rakudo" advent post :) 12:51
timotimo you can make t/spec/S123-blah/foobar.t 12:52
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ab5tract timotimo: doh.. that makes sense. i was trying against the file which failed in spectest, which was moar specific. thanks 12:54
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bartolin ab5tract: you can use "perl t/harness --fudge --moar t/spec/S123-blah/foobar.t" 13:01
ab5tract bartolin: for the fudge :) 13:02
bartolin ab5tract: oh, that was not what you wanted. sorry for the noise ;-) 13:03
ab5tract not at all! that probably should have been written as "thank you for the fudge" :) 13:04
bartolin *g*
dalek : c259106 | nige123++ | misc/perl6advent-2014/schedule:
Update schedule
13:06
: c9594ac | moritz++ | misc/perl6advent-2014/schedule:
Merge pull request #6 from nige123/patch-1

Update schedule
psch re: advent calender: i guess struggling with understand code-gen for the jvm backend is not quite worthy of a post, but that's about what i can think of i could write about
moritz ab5tract: please /msg me your email address so that I can invite you to the advent calendar
psch: I'd like to read that
psch moritz: alright, i guess i have to pick a day then 13:08
and take more extensive notes as well...
i'm thinking an overview of "what does running perl6-j do and how did i get to understand it" is somewhat of a decent title/summary 13:10
looking at topic-brainstorming that should probably come before NativeCall-jvm, if anyone writes about that 13:11
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psch i'll try to pin down a date until this evening, got some other stuff to do about now o/ 13:13
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dalek : c3bb8dc | (Elizabeth Mattijsen)++ | misc/perl6advent-2014/schedule:
Commit to doing an advent piece on 5 dec
13:20
moritz anybody else in need of a perl6advent.wordpress.com invite? 13:25
lizmat having claimed 5 dec, please note that I'm not stuck to that date and could do it later :-) 13:28
colomon we don't have a day 1 on the schedule? 13:29
moritz we have
or did I forget to push?
bartolin colomon: you probably only looked at the diff? 13:30
colomon yes
bartolin++
moritz that shows only 3 lines of context :-)
colomon moritz++ 13:31
moritz colomon: gist link for a preview is in the backlog
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ab5tract hmm.. i get a fair number of failed tests when running make spectest against nom. are there a specific set of steps that need to be taken when switching between branches on rakudo.git in order to have a "clean" run of the spec suite? 13:59
s/are there/is there/
i'm already rm'ing all .moar files in t/spec before running make spectest after switching branches. but should i be doing a distclean or something? 14:01
timotimo what symptom are you seeing? 14:02
lizmat ab5tract: are you on OS X ? 14:04
tony-o timotimo: gonna rebuild moar with ASAN, the two envirovars didn't stop the errors
ab5tract timotimo: gist.github.com/ab5tract/211fd789b8071fce9599
lizmat: yup
timotimo tony-o: OK, thanks
lizmat welcome to my world :-(
ab5tract :/ 14:05
lizmat spectests on OS X can only be described as "flaky" at the moment :-(
tony-o timotimo: should i just do --moar-options='ASAN=1' ?
ab5tract ok..
timotimo i think it has to be --moar-options=--asan
tony-o ok
timotimo [Coke]: if i write an article about GTK::Simple - maybe in combination with cairo - could you help me make sure everything works on OSX, too? IIRC you got it to work on your machine
tony-o i have gtk working on my machine too .. 14:06
(osx)
dalek kudo/newio: b0605fc | (Elizabeth Mattijsen)++ | src/core/IO (2 files):
Add missing .spurt methods
kudo/newio: 8b565a6 | (Elizabeth Mattijsen)++ | src/core/ (2 files):
Streamline spurt functionality
kudo/newio: db00491 | (Elizabeth Mattijsen)++ | src/core/IOU.pm:
Set that on successful open/mkdir/spurt
ab5tract lizmat: so that begins to explain why they don't even necessarily appear consistent
lizmat indeed...
ab5tract makes chasing down the bugs pretty difficult .... :( 14:07
timotimo tony-o: did you have to change anything, like the library name in "is native"?
ab5tract but, at least my set comparator changes pass the set related tests :D
lizmat it's some memory corruption that seems related to the way OS X does ASLR (en.wikipedia.org/wiki/Address_space...omization)
timotimo or build gtk with brew or macports?
tony-o timotimo: yea just leave off the .dylib or .so
lizmat that happens on moment X, but isn't showing up until Y (which is much later in process terms) 14:08
tony-o iirc we checked it in debian and it worked that wre without the .whatever
ab5tract lizmat: joy :( :(
[Coke] timotimo: sure, I'll be your os x guinea pig.
timotimo thank you
lizmat whether this is a problem of OS X, or simply more prominently visible on OS X due to something like ASLR
who knows
tony-o s/that wre/there/
lizmat jnthn at least now has access to an OS X machine so he can look at it 14:09
timotimo i know i can make GTK::Simple compile by removing the "use GTK::Gdk" line, maybe it'll also work to just put the GDK module's contents into the same file
[Coke] does not like this dizzy symptom. yikes.
tony-o are you sick too [Coke] ?
ab5tract lizmat: that is indeed good news
timotimo jnthn already found a few things on os x and made them better 14:10
dalek kudo/newio: a9d4c84 | masak++ | lib/Test.pm:
[Test.pm] remove outdated comment
kudo/newio: 91d8995 | masak++ | lib/Test.pm:
[Test.pm] update copyright date
kudo/newio: 0bdd9f3 | (Elizabeth Mattijsen)++ | lib/Test.pm:
Merge branch 'nom' into newio
lizmat was pretty sick yesterday and this morning...
some sleep here at the hackathon helped me a lot
fortunately, the office here has a nice area for a quick nap
tony-o i got sick yesterday on a bike ride still about 2 hours away from home
lizmat (which wasn't so quick in my case) 14:11
tony-o: that sucks...
tony-o timotimo: i get those errors with --asan and both env vars set 14:12
lizmat: being sick is always gross 14:13
ab5tract it is also good news that i've been worrying about my set changes breaking things, when in fact its endemic
lizmat as long as the test file runs ok by itself, you should be ok 14:14
at least, that's what I've been going by
jnthn Wow, so sickness... Hope y'all get well soon... 14:19
Yes, the OSX failures are a darn nuisance. Things are far cleaner for me than they were after a couple of patches, but still not clean :/ 14:20
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[Coke] tony-o: vomit and dizziness, that's me. 14:38
ab5tract jnthn: i'm thinking that these may also explain some of the seemingly random failures i've been having when working on the Adventoratuer 14:40
which, in the context of memory, start to make more sense... 'Malformed UTF-8', 'Could not open file: {$impossible-location}', etc 14:42
JimmyZ_ that's different thing.. 14:43
cosimo mvuets: pong
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dalek kudo/newio: 8c062d1 | (Elizabeth Mattijsen)++ | src/core/IOU.pm:
Pass any extra .new parameter on through
14:54
kudo/newio: c73c0b1 | (Elizabeth Mattijsen)++ | src/core/IO/Dir.pm:
A child of Dir is not necessarily a Dir
kudo/newio: 54d2711 | (Elizabeth Mattijsen)++ | src/core/CompUnit (3 files):
Initial IO::Path sanitation of CompUnit and friends
kudo/newio: d027745 | (Elizabeth Mattijsen)++ | src/core/CompUnit.pm:
Remove superfluous reference to $*SPEC
14:56
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ab5tract JimmyZ_: oh? 14:59
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lizmat ab5tract: fwiw, what you describe, sounds familiar to me 15:01
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b2gills m: sub example ( $ --> Int | Failure ){ ... } # Is there a way to get this to work? 15:26
camelia rakudo-moar 91d899: OUTPUT«===SORRY!=== Error while compiling /tmp/kBW6J1HBRU␤Missing block␤at /tmp/kBW6J1HBRU:1␤------> sub example ( $ --> Int ⏏| Failure ){ ... } # Is there a way to g␤ expecting any of:␤ statement list␤…»
lizmat m: sub a(--> Int) { fail "foo" }: my $a = a' 15:27
camelia rakudo-moar 91d899: OUTPUT«===SORRY!=== Error while compiling /tmp/FTtSlZZom9␤Invocant colon not allowed here␤at /tmp/FTtSlZZom9:1␤------> sub a(--> Int) { fail "foo" }:⏏ my $a = a'␤»
lizmat m: sub a(--> Int) { fail "foo" }; my $a = a'
camelia rakudo-moar 91d899: OUTPUT«===SORRY!=== Error while compiling /tmp/D1b8x9o8yZ␤Two terms in a row␤at /tmp/D1b8x9o8yZ:1␤------> sub a(--> Int) { fail "foo" }; my $a = a⏏'␤ expecting any of:␤ argument list␤ postfix␤ …»
lizmat m: sub a(--> Int) { fail "foo" }; my $a = a 15:28
camelia rakudo-moar 91d899: OUTPUT«Type check failed for return value; expected 'Int' but got 'Failure'␤ in any return_error at src/vm/moar/Perl6/Ops.nqp:649␤ in sub a at /tmp/fjTCKn7wdu:1␤ in block <unit> at /tmp/fjTCKn7wdu:1␤␤»
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lizmat hmmm.. that feels like a bug, as I seem to recall a Failure should survive a type check like that... 15:29
jnthn It's up for debate. It really hoses a good bit of compile time optimization if you can't actually trust your types. 15:31
So I'm generally against such magic.
The Nil discontinuity in assignment is already bad enough.
masak (fewer exceptions in the type system)++ 15:32
sounds to me like Failure wants to be a bottom type, though.
b2gills So the only course of action is to fail immediately in that case 15:35
m: sub a(--> Int) { my $FATAL = True; fail "foo" }; my $a = a 15:36
camelia rakudo-moar 91d899: OUTPUT«Type check failed for return value; expected 'Int' but got 'Failure'␤ in any return_error at src/vm/moar/Perl6/Ops.nqp:649␤ in sub a at /tmp/T1aTovFSDM:1␤ in block <unit> at /tmp/T1aTovFSDM:1␤␤»
b2gills m: sub a(--> Int) { my $*FATAL = True; fail "foo" }; my $a = a
camelia rakudo-moar 91d899: OUTPUT«foo␤ in sub a at /tmp/oVOsj4nTzY:1␤ in block <unit> at /tmp/oVOsj4nTzY:1␤␤»
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vendethiel o/, #perl6 15:45
dalek kudo/newio: d8fe25a | (Elizabeth Mattijsen)++ | src/core/CompUnitRepo/Locally.pm:
Make sure we get a Str for a CompUnitRepo
15:46
kudo/newio: 31040e6 | (Elizabeth Mattijsen)++ | src/core/CompUnit.pm:
Handle path -> abspath migration
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lizmat Patch -p2 hackathon dwindling down... 15:48
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smls moritz: Would "Data munging in Perl 6 vs Perl 5" be acceptable as a perl6advent topic? 16:10
Rather than focus on any particular Perl 6 feature, I'd do one or two small case studies for contrieved-but-practical usecases that involve reading stuff from a file, putting it into a data structure, transforming said data structure, and printing output. 16:11
I.e. the kind of quick-and-dirty scripting that sysadmins/powerusers/students/scientists etc. tend to use Perl 5 for in practice (as opposed to "professional programmers building full-fledged applications").
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smls And hopefully show that Perl 6 can be a good replacement for Perl 5 in that area... :) 16:11
vendethiel smls: I actually have bad slides for a talk like that :) 16:12
smls I'd go through the Perl 5 and Perl 6 solutions for the case study side-by-side and step-by-step, noting not just superficial syntax differences, but how one would most idiomatically approach each step in each language.
vendethiel (that's pretty much 99% of my P6 use at $work)
smls vendethiel: Are the slide public? :) 16:13
*s
vendethiel smls: no, they're terrible :P
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smls I've already come up with a tiny case-study that allows me to show off «.lines» (as a lazy list!), «.map», a sigspace'd regex, a hash, «.grep», «.classify», «.comb», «.sort», and string interpolation. 16:16
lizmat smls++
smls (in 12 LOC, some of which are boring 'say' statements...)
But I'd maybe like to have a second case-study for showing off hyper/meta ops and maybe Sets/Bags/Mixes etc. 16:17
lizmat Patch -p shutting down&
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vendethiel smls: gist.github.com/vendethiel/69bad550355ec5455ebd 16:19
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vendethiel few examples if you want 'em 16:19
smls vendethiel: Thanks 16:20
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timotimo .tell azawawi will you write a post on the advent calendar about farabi6? 16:46
yoleaux timotimo: I'll pass your message to azawawi.
timotimo a blog post about HTTP::Server::Async could be pretty neat, too 16:49
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smls Here's another idea for a perl6advent post I'd like to see: "Language Consistency & Correctness (a.k.a. Less Special Syntax & Magic)" 17:00
But someone more knowledgeable than me should write that one... :)
Although I did come up with some initial bullet points: gist.github.com/smls/116c4e55de020e17829a 17:01
^^ timotimo? moritz? lizmat? TimToady? :) 17:02
b2gills