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masak wollmers: `unshift %bMatches{$_} for @b[$bmin..$bmax]; $index += $bmax - $bmin + 1;` 00:04
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wollmers masak: Why the +1? 00:14
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masak because a range that includes both its endpoints will contain one element more than the difference between them. 00:23
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masak m: say (10..30).elems 00:24
camelia rakudo-moar 315ec6: OUTPUT«21␤»
wollmers m: my @b = <a b a b>;my %bM;my $i;unshift %bM{$_},$i++ for @b;%bM.perl;
camelia ( no output )
wollmers m: my @b = <a b a b>;my %bM;my $i;unshift %bM{$_},$i++ for @b;%bM.perl.say; 00:25
camelia rakudo-moar 315ec6: OUTPUT«("a" => [2, 0], "b" => [3, 1]).hash␤»
masak oh, right, you actually want to unshift the $i++. sorry :)
wollmers masak: yea. I am sure, there is something more elegant in P6 00:26
masak not so sure.
wollmers Hmm. It goes through a list, and stores the positions of the keys as values. 00:31
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wollmers masak: can I combine this in a hash: <a b a b>.kv 00:41
m: <a b a b>.kv.say
camelia rakudo-moar 315ec6: OUTPUT«0 a 1 b 2 a 3 b␤»
masak m: say <a b a b>.pairs.perl 00:42
camelia rakudo-moar 315ec6: OUTPUT«(0 => "a", 1 => "b", 2 => "a", 3 => "b").list␤»
masak m: say <a b a b>.pairs.classify(*.value).perl
camelia rakudo-moar 315ec6: OUTPUT«("b" => [1 => "b", 3 => "b"], "a" => [0 => "a", 2 => "a"]).hash␤»
masak m: say <a b a b>.pairs.classify(*.value).map({; .key => [.value.keys]}).perl 00:43
camelia rakudo-moar 315ec6: OUTPUT«("a" => [0, 1], "b" => [0, 1]).list␤»
wollmers But with ethe letters as key, and the values as arrays.
masak \o/
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timotimo actually 01:03
m: say ((my %).push: <a b a b>.pairs).perl
camelia rakudo-moar 315ec6: OUTPUT«("1" => "b", "0" => "a", "2" => "a", "3" => "b").hash␤»
timotimo ah 01:04
m: say ((my %).push: %<a b a b>.invert).perl
camelia rakudo-moar 315ec6: OUTPUT«().hash␤»
timotimo how did that work again
m: say %<a b a b>.perl
camelia rakudo-moar 315ec6: OUTPUT«().hash␤»
timotimo ah, of course
m: say %(<a b a b>).perl
camelia rakudo-moar 315ec6: OUTPUT«("a" => "b").hash␤»
timotimo m: say %(<a b a b>.pairs).perl
camelia rakudo-moar 315ec6: OUTPUT«("1" => "b", "3" => "b", "0" => "a", "2" => "a").hash␤»
timotimo m: say %(<a b a b>.pairs).invert.perl 01:05
camelia rakudo-moar 315ec6: OUTPUT«("a" => "0", "b" => "1", "a" => "2", "b" => "3").list␤»
timotimo m: my %target; %target.push: %(<a b a b>.pairs).invert; say %target
camelia rakudo-moar 315ec6: OUTPUT«"a" => ["0", "2"], "b" => ["1", "3"]␤»
timotimo that's what i meant
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dj_goku [Coke]: hi. Yeah I want to add tests to what ingy has downloaded. 01:58
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PerlJam got an email today from Mr. Laurence Wall 02:24
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colomon PerlJam: ooooo 02:34
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dalek rl6-bench/stress: 8fc4746 | (Geoffrey Broadwell)++ | / (2 files):
Add --show-relative analyze option, defaulting to --compare, turned off for diagnosis
03:42
rl6-bench/stress: 63330ac | (Geoffrey Broadwell)++ | lib/Analyze/Summary.pm:
Fix 'showing' subheader to correctly reflect various --show-* options
rl6-bench/stress: 5e2a95b | (Geoffrey Broadwell)++ | analyze:
Improve diagnosis layout in --compare mode
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dalek rl6-bench/stress: 83fb590 | (Geoffrey Broadwell)++ | analyze:
Prepare analyze for detection of timeouts
06:18
rl6-bench/stress: a9ba519 | (Geoffrey Broadwell)++ | analyze:
Reorder code slightly for clarity
rl6-bench/stress: 47c5376 | (Geoffrey Broadwell)++ | analyze:
Refactor summarize_results_html_snippet() in preparation for adding failure diagnoses
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dalek rl6-bench/stress: 918d15a | (Geoffrey Broadwell)++ | analyze:
Only show summary scores when --show-relative is set, HTML edition
06:36
rl6-bench/stress: 4ba1f4a | (Geoffrey Broadwell)++ | analyze:
Show failure diagnosis icons in HTML output
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moritz good morning #perl6 07:21
timotimo hello :) 07:23
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lizmat good *, #perl6! moritz timotimo o/ 08:32
timotimo hai liz :)
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FROGGS_ morning 08:40
lizmat FROGGS_ \o 08:41
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FROGGS_ .tell wollmers It looks like /:P5\X/ is post NFG... because right now "E\c[COMBINING GRAVE ACCENT]" ~~ /./ only matches 'E' 08:59
yoleaux FROGGS_: I'll pass your message to wollmers.
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moritz now I wonder -- what's the use case for the m/.../ immediate matching forms? 09:48
for @list { if m/.../ } # would work with rx or / / too, because of boolean context 09:52
m/(.)(.)/; say join '|', $0, $1; # could work with rx or / / if sink context triggers regex matches 09:53
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FROGGS_ hmmm, maybe m/../ as the last statement of a routine? 09:55
dalek kudo/nom: 685ee66 | (Elizabeth Mattijsen)++ | src/core/IO/Dir.pm:
Fix dirname/succ/pred
kudo/nom: 86af5ee | (Elizabeth Mattijsen)++ | src/core/IO.pm:
Add MAKE-EXTENSION, fix MAKE-BASENAME
kudo/nom: c466b28 | (Elizabeth Mattijsen)++ | tools/build/ (3 files):
Add IO/Dir.pm to settings
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masak hi there, #perl6 11:08
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firefish5000 I am trying to figure out subsets. What are they? <my subset Min of Int where (0..60); my Min $min=1; say $min.WHAT;> prints Int, <$min=62;> fails (so its still effective), and <my $b=$a; $b=62;> works (so subsets arn't kept by =, which is unfortunate for my use case), 11:27
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masak it's containers that are typed, not their values. 11:28
and subsets are refinement types, not nominal types. 11:29
(so you won't see the subset type when you .WHAT) 11:30
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lizmat cycling& 11:31
firefish5000 so since its just the container constrained, copies will be unconstrained, which is why I cannot pass them as arguments and have them work the way I want... 11:32
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masak yes, you got it. 11:37
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firefish5000 Thanks masak! I would have gone down this route for an eternity without that... 11:39
masak prego. enjoy your Perl 6. 11:40
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firefish5000 now as a follow up. Is there a way for me to create a normal type such as <class Min { has Int $.min where (0..60); }; my Min $a; $a = 4;> where some p6 black magic makes $a=4 work like $a.min=4? I have tried overloading '=' for Min, but thats not possible.. 11:43
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timotimo mumbles something about box targets 11:44
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firefish5000 if anyone says 'no' or 'i don't think so', 90% of my stress from over complicating my p6 to achieve this functionality will be revealed as I just deal with the 4 extra chars... 11:47
timotimo well, Int itself is implemented as having a "has $!int is box_target" attribute 11:49
that makes it possible to nqp::box_i(123, Int)
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timotimo (though pretty much all code in rakudo itself should use nqp::p6box_i(123), which gives the Int automatically) 11:49
and many operations will use one of the two Int box types that "come in" to do calculations 11:50
so if you use the minute Int type everywhere, it might just work out
er
i forgot the important part
"has int $!int is box_target" 11:51
and native ints cannot have subsets applied to them
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firefish5000 is googleing box targets and enjoying the streamed information throughly 11:52
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timotimo i had no idea %) 11:53
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firefish5000 thanks timotimo, Ill see what I can do with this and hopefully will be able to put it to good use! (my hate those 4 chars is worth 1000 lines of code, and from a 2min google this looks like it may be done in <100) 11:57
timotimo hmm 11:58
masak so, how do you young'uns connect to SQLite from your Perl 6 code these days?
do you use DBIish?
timotimo i haven't done database stuff with perl 6 yet
but i'd probably just use DBIish
masak will try this 11:59
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masak I am now at a point where a hobby project takes about an hour just to start up, mostly because it's building a data model. 11:59
I figure if I put some of this in a db, the boot sequence will be faster :)
timotimo oh wow 12:01
well, we should still become faster 12:02
but yeah ... db is your friend
masak it's a really data-heavy thing I'm doing.
timotimo so i was thinking of how to model unions for NativeCall
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timotimo one way seems to be to create a new REPR, but that sounds quite iffy 12:03
another way is to have an "is union" trait on classes that can set a "create a union" flag in the repr_data, which requires changing Metamodel::ClassHOW, which seems iffy, too
with an ExportHOW i could perhaps create a "cunion" keyword that'd do a whole lot of magic for creating dummy attributes so that the resulting CStruct is big enough and for each class you put into it it'd create an accessor that'd cast and return self 12:05
that kind of sounds not too terrible
it's still pretty annoying to cast CStructs into other CStructs 12:06
another thing i thought about for the particular use case of SDL_Event is this: 12:07
every SDL_Event has an int32 type and an int32 timestamp at the start and then there's more stuff following it
so if CStruct would actually implement change_type, it could be "casted" like this: 12:08
have a role that contains the extra attributes
and a cast would just be return self but SDL_MouseButtonEventAttributeRole
that's kind of neat, but has its problems, as well
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timotimo like if you .= new your own SDL_Event - which is what you do before you SDL_PollEvent - it'd only have space for the beginning and everything after that would be writing/reading garbage memory 12:09
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timotimo i suspect it'd be the best thing to teach nativecallcast about casting CStruct into something; currently it just complains that it expects a CPointer REPR'd thing 12:13
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moritz note to self: the day after halloween is a holiday. Not good for shopping. 13:10
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timotimo interesting 13:22
my code is causing MVM to try to free() the string data for a piece of string data that wasn't malloc'd 13:23
that string is "$OUT" ... i have no clue where my program found that
moritz the setting uses '$OUT' for initializing '$*OUT', iirc 13:27
PROCESS::<$OUT> = ...; 13:28
timotimo that would mean it comes from the string heap? 13:30
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moritz I have no idea; just speculating wildly 13:31
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timotimo it does smell a lot like memory corruption. 13:31
moritz oh fun, mk.de is down (and all their network lines, which they lend to others) 13:32
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isBEKaml moritz: what's mk.de? 13:47
I'm guessing ISP of some sort?
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timotimo interesting 13:59
the problem occurs even when i'm not using nativecallcast at all ... and it also occurs if i revert the latest commit to moarvm
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masak quiet in here today. 15:36
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timotimo mhm 15:39
i'm having a hard time trying to motivate myself to hunt that memory corruption look-alike
moritz timotimo: I promise you a cookie for a fix 15:44
timotimo how am i supposed to fix such a stupid thing like that? :( 15:47
moritz timotimo: ok, I promise you two cookies
timotimo i can feel the problem become easier 15:48
moritz timotimo: what kinds of cookies do you like? 15:49
timotimo i like many kinds of cookies
moritz timotimo: www.amazon.de/Bahlsen-Selection-1er...000FWHWEU/ :-) 15:51
timotimo that *is* a "many kinds of cookies" kind of thing :D 15:52
moritz and it's more than two cookies too 15:53
timotimo :)
moritz timotimo: sudo feel motivated :-) 15:54
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timotimo hah 15:54
well, i've already reproduced the bug on my desktop, so there's that
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timotimo oh, wait ... if it says "freed by thread T0 here:" followed by "==31298== AddressSanitizer CHECK failed: ../../../../libsanitizer/sanitizer_common/sanitizer_stackdepot.cc:182 "((id & (1u << 31))) == ((0))" (0x80000000, 0x0)" ... 15:55
moritz just made one commit so far today 15:56
timotimo does that mean it tries to double-free? or did that error get triggered while trying to show the error properly?
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timotimo oh! someone could have told me that you need the llvm-symbolizer binary to get symbols resolved in asan stack traces 15:59
-fno-omit-frame-pointer and --debug=3 is not enough
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timotimo er ... except i already have that installed and i still only get memory addresses 16:00
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dalek rl6-bench/stress: 2cb1967 | (Geoffrey Broadwell)++ | analyze:
Non-plot HTML pages are UTF-8 too
16:07
rl6-bench/stress: 2dbd21e | (Geoffrey Broadwell)++ | analyze:
Reduce visual noise by de-emphasizing the icon for successful runs
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raydiak good morning #perl6 16:17
timotimo hey ray :) 16:18
moritz: what if the memory error is just from passing incorrectly sized structs to SDL's functions? 16:20
valgrind apparently has trouble following our function pointers around for REPRops 16:21
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FROGGS_ timotimo: can we already profile stuff that has an exit in it? 16:24
timotimo i've figured out how to do it, but it looked too wrong to be committed ... 16:25
FROGGS_ ahh, hmmm
TimToady moritz: re irclog.perlgeek.de/perl6/2014-10-31#i_9594588 I'd say s/generic/specific/ is incorrect.
timotimo basically you nqp::gethllsymbol('perl6', '@END_PHASERS') or what it's called
and .push a little closure in there that does the dump_profile_info
that would go into rakudo's HLL Backend 16:26
FROGGS_ timotimo: okay, I add that now temporarily to profile cpandatesters :o)
timotimo++
timotimo :)
wow. 16:27
my SDL_Event struct is 56 bit big. it needs to be 56 bytes.
that's why SDL is writing outside of malloc'd space
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FROGGS_ ohh, heh 16:28
timotimo i quite competently calculated what combination of 64 bit, 32 bit, 16 bit and 8 bit integers i'd have to put in there so that it'd be the "right size"
except int64 is 64 bits, not bytes big ...
moritz just a factor 8 off :-) 16:29
timotimo yup
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timotimo *nice* 16:32
now i got an empty window that i can close by clicking the window decoration's close button
and the only valgrind messages i get come from inside libnvidia-glcore 16:33
FROGGS_ that sounds good!
dalek rlito: 2aa46bf | (Flavio S. Glock)++ | / (2 files):
Perlito5 - js - fix context propagation in if()
TimToady timotimo: I don't see offhand why unboxed types cannot have constraints enforced at the time they are stored; after all, something like int16 is constrained to 16 bits, even if the actual storage is wider. native constraints "merely" have to be enforced by the compiler rather than the runtime, using knowledge stored somewhere outside the native 16:39
much like C knows whether you're using a foo** or a bar*, but it's still just a native pointer 16:40
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TimToady or to look at another way, native assignment merely has to inline the appropriate assignment code 16:51
"merely", I mean :)
but that's why C has to be so picky about knowing the difference between an lvalue and an rvalue at compile time 16:53
timotimo mhm mhm 16:54
TimToady I suspect this is part of what jnthn++ is mulling over subconsciously while he's hiking around :)
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vendethiel well met, #perl6. 16:55
FROGGS_ hi vendethiel
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timotimo hey ven 16:57
did you know that if you malloc a 56 bit wide area and give it to SDL2's event polling function, which expects a 56 byte wide area to write all over, there'll be trouble?
FROGGS_ SDL2 is a bit picky, that's for sure 16:58
timotimo FROGGS_: how can you call that sdl2 being picky? %) 16:59
FROGGS_ ohh, is it byte picky instead? :o) 17:00
timotimo yeah
that must be it
.o( now that i get it ... it's funny )
dalek p: 05cb90e | (Tobias Leich)++ | src/vm/moar/HLL/Backend.nqp:
also write profiler output when rakudo exit()s

  timotimo++ for the proposed patch.
17:02
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TimToady
.oO(obviously C needs better constraint checking on its native types...)
17:05
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timotimo turns out the struct i built wasn't even 56bit big, it was 120 bit big 17:06
i wonder how i reached the conclusion that that would be the right size 17:07
but it was pretty late at night, so at least i have an excuse - sort of
vendethiel timotimo, I did know that, yes 17:10
timotimo well then why didn't you tell me? :\ 17:11
vendethiel C is like "if I fit, I sit, otherwise LOL mate".
timotimo well, it did fit
there was just something else that it had to partially sit upon ...
FROGGS_ eww, I got a 17MB profile from my cpandatesters run >.< 17:12
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timotimo yup, that's how our profiler does it 17:13
let me dig out my partial patch that cuts down on size but also sadly makes the results wrong
maybe you can fix it? :)
remotes/origin/finite_callgraph_depth 17:14
please have a look at that :)
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timotimo i'm definitely looking forward to native shaped arrays; that's going to give us flattened arrays in CStruct almost immediately 17:20
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raydiak so I've seen people talking about cpan and perl 6...should I be worried about making p6 modules with the same names as p5 modules? 17:29
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timotimo nope, no worries there 17:29
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raydiak cuz math::symbolic is almost ready to go up, but it's not yet a faint glimmer of p5's math::symbolic, I almost felt bad for naming it the same when I saw it :) 17:30
timotimo in that case, just call it Math::Symbolish :P
raydiak heh not that bad 17:31
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raydiak how's it goin anyway timo? working on anything interesting today? 17:33
timotimo my current focus is SDL2 bindings 17:34
raydiak awesome!
timotimo afk for a tiny bit &
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timotimo and you? anything besides math::symbolic keeping you busy? 17:43
raydiak I'm procrastinating walking/bussing half way across town in the rain to jack up my g/f's car and carry the flat tire w/wheel to the nearest gas station and pray it holds air :P 17:44
timotimo oh my 17:45
i had b0rked my car recently, too
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raydiak ah, sorry to hear it...you okay? the car? 17:45
timotimo yeah, it was only damage to the autobody 17:46
happened at very low speeds
raydiak one time I rear-ended a truck in an entry-level new car at like 5 mph and half the engine compartment crumpled up like an accordian
gotta love them crumple zones 17:47
timotimo :o
that doesn't sound so good
also, that sounds like it'd be very expensive to repair
raydiak was just body stuff mostly, didn't total it...drove it a couple blocks home, hanging my head out the window so I could see around the hood
timotimo d'oh
i only lost the bumper 17:48
it was hanging on by one of the light's cables, so before i could drive it away "to safety" i had to unscrew the light using one of my keys :S
cars can be fun
raydiak hah yes they can
I've learned a *ton* about physics just from learning about cars, too 17:49
timotimo oh, yeah
i recently went karting with friends and i was kind of disappointed that all the stuff i learned from my dad, who's big into racing simulation games, wasn't enough to make my performance stand out :| 17:50
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raydiak I haven't really done any kind of competitive driving 17:51
except a little fling with need for speed once in a while 17:52
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timotimo ah, you were considering "simulated driving" in that description, too 17:52
raydiak I have done a *ton* of fixing (and breaking)
timotimo i think i've been karting twice in my life so far; once with regular combustion engines and recently with electric karts 17:53
electric karts are way cool.
raydiak oh I'll bet...weird to have all the torque right from the start?
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timotimo didn't feel weird; not entirely sure why, though 17:55
raydiak wI've always wanted to try an electric car, a car w/a cvt, and a rotary mazda, to see what they feel like 17:56
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timotimo i know neither what a cvt nor a rotary mazda is :\ 17:57
raydiak cvt=continuously variable transmission, no discreet "1st", "2nd", "3rd" gear
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timotimo ah 17:58
liz and wendy took me to APW in their plug-in prius
raydiak and mazda has made some cars with rotary engines, which don't have pistons 17:59
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raydiak instead it's this weird sort of "triangle spinning in an oval" shape 17:59
timotimo en.wikipedia.org/wiki/Wankel_engine - like this one?
raydiak yeah that one!
I knew there was a more specific term I wasn't remembering 18:00
timotimo i always thought wankel engines were really neat 18:01
but i never saw one in action
raydiak I hear they love to accelerate...almost no reciprocating mass, very well-balanced, high redline, wide powerband
poor fuel economy b/c of a low compression ratio, but that means they probably do well with turbo/supercharging 18:02
timotimo mhm
i'd love to own a tesla one day
or at least drive
raydiak yeah no kidding 18:03
timotimo i've seen a quite big amount of charging stations all around the city
raydiak haven't seen any here yet
though tbh if I had a bunch of money and wanted a nice car, I'd rather have a lotus than most other things...they tend to be crazy light, good fuel economy and power-weight ratio 18:06
not that expensive either, by comparison to most other "exotic" brands
entry-level elise was like $60k US last time I looked 18:07
timotimo what's missing in the entry-level ones? 18:08
raydiak but I got a few years to worry about how to bankroll my midlife crisis yet :)
no supercharger, for one
18:08 raiph joined
raydiak or was it a turbo on the exige? I forget, either way, naturally aspirated 18:08
timotimo i wouldn't accept a car that doesn't have air conditioning and heating, for example
raydiak not sure if the bottom-end elise has limited-slip or not, either 18:09
18:09 BenGoldberg joined
timotimo to me, a "supercharger" is the thing that you can charge your car very quickly with 18:09
raydiak I don't use A/C, but I'd be surprised if it has no heat
hehe
japhb raydiak: Back in the 80's my dad had a rotary-engine sports car. The acceleration was indeed amazing. It had an auditory readline, because you might not notice you were hitting it.
timotimo i kind of sort of know what a turbo is
... a readline? 18:10
japhb redline
raydiak the way the slang around here goes, turbo is forced-induction (air pump in your intake) powered by the exhaust flow, while supercharger is belt-driven
japhb Clearly you know which one I type more often
raydiak japhb: nice :) I'm jealous
timotimo oh, redline is the point where your rpm is too high?
japhb timotimo: yeah
timotimo OK
raydiak yeah past that you're risking immediate internal engine damage 18:11
TimToady the redline on a rotary was up like 6-7000 rpm, iirc
timotimo mhm