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Set by lizmat on 6 September 2022.
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[Coke] you can specify degree and batch - there are defaults 00:22
oh, oops: method race(Int(Cool) :$batch = 64, Int(Cool) :$degree = 4 --> Iterable) 00:24
Nemokosch are they different from other default values?
[Coke] right in the docs. I thought those were driven by a per machine config 00:25
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Nemokosch and apparently I'm not doing a great job at reading chat 00:40
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grondilu Hi 06:01
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grondilu m: say (-> &f { 1, &f.assuming(*, 1) ... * })({ cos $^a + $^b })[^10] 06:01
camelia (1 -0.4161468365471424 0.834344819917976 -0.2605081543348971 0.7388111056961248 -0.16722541329588864 0.6728257104204812 -0.10185245484442669 0.6230599786146125 -0.05223986213471105)
grondilu m: say (-> &f { 1, &f.assuming(*, 1) ... * })(&cos o &[+])[^10] 06:02
camelia Too many positionals passed; expected 0 to 2 arguments but got 3
in sub __PRIMED_ANON at EVAL_2 line 4
in sub __PRIMED_ANON at EVAL_2 line 1
in block <unit> at <tmp> line 1
grondilu m: say (&cos o &[+]).assuming(*, pi)(2) 06:03
camelia 0.4161468365471423
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grondilu m: say { &^f.assuming(*, pi) }(&cos o &[+])(2) 06:05
camelia 0.4161468365471423
grondilu m: say { 1, &^f.assuming(*, pi) ... * }(&cos o &[+])(2)
camelia No such method 'CALL-ME' for invocant of type 'Seq'
in block <unit> at <tmp> line 1
grondilu m: say { 1, &^f.assuming(*, pi) ... * }(&cos o &[+]) 06:06
camelia (...)
grondilu m: say { 1, &^f.assuming(*, pi) ... * }(&cos o &[+])[^10]
camelia Too many positionals passed; expected 0 to 2 arguments but got 3
in sub __PRIMED_ANON at EVAL_2 line 4
in sub __PRIMED_ANON at EVAL_2 line 1
in block <unit> at <tmp> line 1
grondilu sorry for the noise, but I think there is a bug here
to recap...
m: say { &^f.assuming(*, pi) }(&cos o &[+])(2) # this works 06:07
camelia 0.4161468365471423
grondilu m: say { 1, &^f.assuming(*, pi) ... * }(&cos o &[+])[^10] # but not this?
camelia Too many positionals passed; expected 0 to 2 arguments but got 3
in sub __PRIMED_ANON at EVAL_2 line 4
in sub __PRIMED_ANON at EVAL_2 line 1
in block <unit> at <tmp> line 1
grondilu I know that is a convoluted line but that's the best I could come up with to reproduce a weird error I got in some digest code of mine. 06:09
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grondilu slightly shorter: 06:10
m: say 1, (&cos o &[+]).assuming(*, pi) ... * > 10
camelia Too many positionals passed; expected 0 to 2 arguments but got 3
in sub __PRIMED_ANON at EVAL_2 line 4
in sub __PRIMED_ANON at EVAL_2 line 1
in block <unit> at <tmp> line 1
grondilu the part about three arguments is especially weird. where are there three args?? 06:12
grondilu was about to post an issue on github and notices rakudo already has 1k issues 06:16
damn that is a lot of issues 06:17
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grondilu oh maybe the Seq interprets (...).assuming(*, pi) as { (...).assuming($_, pi) } 06:20
m: say 1, { (&cos o &[+]).assuming($_, pi) } ... * > 10
camelia Cannot resolve caller Real(Sub+{Callable[Mu]}:D: ); none of these signatures matches:
(Mu:U \v: *%_)
in block <unit> at <tmp> line 1
grondilu nope 06:21
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grondilu m: my &f = (&cos o &[+]).assuming(*, pi); say 1, &f ... * > 10 06:21
camelia Too many positionals passed; expected 0 to 2 arguments but got 3
in sub __PRIMED_ANON at EVAL_2 line 4
in sub __PRIMED_ANON at EVAL_2 line 1
in block <unit> at <tmp> line 1
grondilu m: my &f = (&cos o &[+]).assuming(*, pi); say &f(e) 06:22
camelia 0.9117339147869649
grondilu m: my &f = (&[+]).assuming(*, pi); say 1, &f ... * > 10 06:23
camelia (1 4.141592653589793 7.283185307179586 10.42477796076938)
grondilu m: my &f = &cos o &[+].assuming(*, pi); say 1, &f ... * > 10 06:24
camelia (1 -0.5403023058681398 -0.8575532158463933 -0.654289790497779 -0.7934803587425655 -0.7013687736227564 -0.7639596829006542 -0.7221024250267077 -0.7504177617637604 -0.73140404242251 -0.7442373549005568 -0.7356047404363472 -0.7414250866101092 -0.73750689…
grondilu m: say (&[+]).assuming(*, pi).count 06:35
camelia 1
grondilu m: say (&[+]).assuming(*, pi).arity 06:36
camelia 0
grondilu ??
m: say (&cos o &[+]).assuming(*, pi).count
camelia Inf
grondilu m: say (&cos o &[+]).assuming(*, pi).arity 06:37
camelia 0
grondilu m: say (&cos o &[+]).assuming(*, pi).of
camelia (Mu)
grondilu that doesn't look right
m: say (&cos o &[+]).arity 06:38
camelia 0
grondilu m: say (&cos o &[+]).count
camelia 2
grondilu m: say (&cos o &[+]).of
camelia (Mu)
grondilu looks at the code for C<assuming> 06:41
grondilu runs away in terror
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guifa grondilu: my understanding is that assuming was put together rather quickly 10:15
tellable6 guifa, I'll pass your message to grondilu
guifa it's also rather slow. But there's definitely some potential for speed up 10:16
I need to spend sometime looking at those examples though to see what may be going on and if it makes sense
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pmurias hi! 11:55
tellable6 2022-07-09T11:51:29Z #raku <Xliff> pmurias Hey there! Nice to see you around. Hope to catch up to you in the future!
pmurias simon.peytonjones.org/assets/pdfs/...nge-22.pdf - interesting to see the overlap with Raku junctions 11:57
lizmat guifa: assuming is screaming "redo me with RakuAST" but we'll have to wait until the Raku grammar uses RakuAST, because we currently cannot introspect the given code enough 11:58
and/or re-use parts of it
guifa lizmat: yeah that's what I was thinking. If I could get a hold of a RAST representation of a sub, I'm fairly certain I could produce an assumed version of it super easily 12:00
lizmat yup
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lizmat anyways, rakuast branch has been updated by vrurg and is now "main" :-) 12:00
guifa is really hoping that traits will get rakuast representations down the road
because OMG the stuff I could with that
lizmat yup :-) 12:01
Nemokosch Voldenet: reminder 12:02
Voldenet Oh, nice 12:05
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Voldenet ".assuming" is a weird part of the language, I shudder every time I remember it actually does _EVAL_ 12:42
Geth ecosystem/main: 307669fc48 | (Juan Julián Merelo Guervós)++ (committed using GitHub Web editor) | META.list
Moved to the zef ecosystem

One down, a few to go.
12:48
Voldenet btw, nice junctions presentation, I adore usage of comic sans 12:55
leont doesn't quite understand why assuming can't just use Captures to do it's thing, all you really need to do is merging captures, right? 13:01
Voldenet iirc I've tried implementing it with Captures and it wasn't exactly trivial 13:05
Geth ecosystem/main: 94fd1471b6 | (Juan Julián Merelo Guervós)++ (committed using GitHub Web editor) | META.list
Moved to zef ecosystem

Looking for greener pastures
13:22
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Geth Raku-Steering-Council/main: 5ad315bdca | (Geoffrey Broadwell)++ | minutes/20221210.md
Add RSC meeting minutes for 2022-12-10
16:24
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[Coke] ... Anyone who has found drag and drop to be acting "funny" on recent osx's ... disable "spring-loading" in accessibility. ahhh 16:55
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mscha m: my Int $n; say $n === 0; 17:41
camelia False
mscha Is this the proper way to check for Int equality without complaining about uninitialized values?
Doesn't seem to be documented for Int.
Nemokosch the reason this doesn't complain about uninitialized values is that it performs a very generic, WHICH based comparison 17:45
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another quasi-solution would be to use quietly on the statement, silencing all runtime warnings 17:48
mscha m: my $a; say quietly $a == 0; 17:50
camelia True
mscha m: my $a; quietly say $a == 0;
camelia True
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mscha m: my @a; @a[0].push: (3,4); say @a[0]; for @a[0] -> ($x,$y) { say "($x, $y)" } 18:09
camelia [(3 4)]
Too few positionals passed to '<anon>'; expected 2 arguments but got 1 in sub-signature
in block <unit> at <tmp> line 1
mscha What am I doing wrong here?
m: my @a; @a[0].push: (3,4); say @a[0]; for |@a[0] -> ($x,$y) { say "($x, $y)" } 18:13
camelia [(3 4)]
(3, 4)
mscha This works, but why is it needed?
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lizmat is getting ready to ditch WordPress completely 18:23
El_Che you ditcher
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lizmat it's like working on a 1200 baud line on a system in the US over satellite all over again 18:23
El_Che hehe 18:24
you mean for raku weekly? 18:25
lizmat yeah, while I'm typing this I'm literally watching a whole line slowly appear in de WP editor
El_Che JS was a great solution
:)
lizmat such behaviour was unacceptable when I wrote an editor for a client in the late 1988's, to run on 286 / 386 machines 18:26
30+ years later it's still the same :-(
El_Che I don't know when I will write a blogpost, but I will create static content from md
I have a caddy container running to put hugo content
hobbified mscha: -> (($x, $y)) is another thing that works, if it makes you happier :) 18:28
mscha hobbified: not really, bracket soup makes me nervous.  ;-) 18:31
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Nemokosch well you did deliberately nest it so... 18:48
mscha Because IRL I need more than @a[0].  But I still don't understand why "for @a[0]" gives me @a[0] itself, and not its contents. 18:50
Nemokosch then we might have two things going on 18:51
dayum, 3 dimensional 18:52
mscha m: my @a; @a[0].push: (3,4); @a[0].push: (5,6); say @a[0]; for @a[0] -> ($x,$y) { say "(x='$x', y='$y')" } 18:54
camelia [(3 4) (5 6)]
(x='3 4', y='5 6')
Nemokosch okay, so here is the thing
@a is an Array
now, what are the elements of an Array?
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Nemokosch m: my @a; @a[0].push: (3, 4); dd @a[0]; 18:56
camelia Array @a = $[(3, 4),]
mscha m: my @a; @a.push: (3,4); @a.push: (5,6); say @a; for @a -> ($x,$y) { say "(x='$x', y='$y')" } 18:57
camelia [(3 4) (5 6)]
(x='3', y='4')
(x='5', y='6')
Nemokosch See the dollar sign? The elements of an Array are _Scalars_
mscha Ah, OK.
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Nemokosch btw I don't like how dd tries to lie to us: it wasn't Array @a obviously, it was Array @a[0]. It would be good to see where it takes the name from... 18:58
anyway, since it's a Scalar container and Scalar containers iterate as one element, the solution is within reach:
mscha Is there any way around this?  In other words, can I get @a[0] to be (or behave like) an array?
Nemokosch m: my @a; @a[0].push: (3,4); say @a[0]; for @a[0][] -> ($x,$y) { say "($x, $y)" } 18:59
camelia [(3 4)]
(3, 4)
mscha OK, that's a bit better than my attempt. 19:00
Nemokosch we might get a dedicated decont soon, if somebody fancies that :)
conventionally, you can decontainerize using zen-slices <> and [] respectively. For positional stuff, I like [] more but it's completely up to you. 19:01
m: my @a; @a[0].push: (3,4); say @a[0]; for @a[0]<> -> ($x,$y) { say "($x, $y)" }
camelia [(3 4)]
(3, 4)
mscha 99% of the time I love Raku.  But 1% of the time, it annoys me with unintuitive stuff like this.
Yeah, [] looks better than <> in this case.
Nemokosch How to put it... this is the kind of stuff one can develop Stockholm syndrome for, quite quickly 19:04
I've grown to like the term "strangely consistent". I think it does express this ambivalence quite well. 19:05
It could be read as an exaggeration of consistency but I frankly don't think that's the accurate interpretation. It's rather just "consistent in a way that often comes off as strange" 19:07
mscha Anyway, thanks for the explanation. 19:08
Nemokosch no problem ^^ 19:10
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Nemokosch Another note: I'm not sure if you really need an array as opposed to a plain list. That would not containerize its elements by default. 19:12
hobbified you do if you want to build it up with push :) 19:14
lizmat looks like clearing out all of WP's local cache, made the editor workable again
hobbified but if you can get around *that* (gather/take maybe?)
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mscha @a[0][] stuff used at: github.com/mscha/aoc/blob/master/aoc2022/aoc12 19:17
Nemokosch yes, sure thing but I for one use push quite seldom - let alone with further Positionals as elements 😛
mscha In calc-distance().  I can't think of a more elegant way to keep track of all points with distance d. 19:19
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grondilu m: say my +^blob32.new(271733878)[0]; 20:13
camelia ===SORRY!=== Error while compiling <tmp>
Malformed my
at <tmp>:1
------> say my⏏ +^blob32.new(271733878)[0];
tellable6 2022-12-12T10:15:30Z #raku <guifa> grondilu: my understanding is that assuming was put together rather quickly
grondilu m: say +^blob32.new(271733878)[0];
camelia -271733879
grondilu I really didn't expect a negative value to come out of a bitwise boolean operator on Blob 20:14
m: say +^my uint32 $ = 271733878;
camelia 18446744073437817737
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grondilu m: say 18446744073437817737 Cmp 2**32 20:15
camelia ===SORRY!=== Error while compiling <tmp>
Two terms in a row
at <tmp>:1
------> say 18446744073437817737⏏ Cmp 2**32
expecting any of:
infix
infix stopper
postfix
statement end
grondilu m: say 18446744073437817737 cmp 2**32
camelia More
grondilu nor a larger value than 2**32
m: say .base(2) given +^my uint32 $ = 271733878; 20:17
camelia 1111111111111111111111111111111111101111110011011010101110001001
grondilu looks like a uint64. Why does &[+^] promote a uint32 to a uint64? 20:18
Nemokosch how does this work at all?
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Nemokosch m: my uint32 $lol = 271733878; say +^ $lol; 20:19
camelia 18446744073437817737
20:19 yay joined
grondilu and why isn't it consistent with how it behaves inside a blob32? 20:19
Nemokosch oh okay, another thing that works differently in the REPL xd
m: my uint32 $lol = 271733878; +^ $lol andthen .base(2).say; 20:20
camelia -10000001100100101010001110111
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Nemokosch anyway, this is the invoked function: github.com/rakudo/rakudo/blob/704a...t.pm6#L541 20:23
grondilu yeah, I was looking at it too. I now think I recall that all native types are treated the same regarless of their size. 20:24
so they're all uint in that case 20:25
m: say .base(2) given +^my uint $ = 271733878;
camelia 1111111111111111111111111111111111101111110011011010101110001001
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grondilu and I suppose prefix:<+^> always uses the largest type not to lose information or something? 20:26
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grondilu m: say .base(2) given +^my uint $ = 1; 20:26
camelia 1111111111111111111111111111111111111111111111111111111111111110
grondilu yeah, it seems so.
that's kind of LTA 20:27
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Nemokosch > This is due to the fact that Natives don't know their types because they're just values, without any metadata. In multi-dispatch, you can have a native candidate, but you cannot differentiate different sizes or signedness of the same native type. That is, you can have an Int and int candidates, but there would be an ambiguity between, for instance int, uint, atomicint or int64 candidates. 20:27
grondilu I'm writing digest functions and I was hoping to do uint32 bitwise arithmetics without ever having to use the modulus operator
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grondilu couldn't the bitwise operators call their native equivalent when called with natives? 20:30
same for arithmetic operators while we're at it. 20:31
lizmat and yet another Rakudo Weekly News hits the Net: rakudoweekly.blog/2022/12/12/2022-50-mainified/
Nemokosch what does "their native equivalent" mean here? 20:32
grondilu hum
yeah I'm not quite sure how that would work, I admit. 20:33
Nemokosch I was thinking of a plain dumb adverb, by the way. to be able to say +^ 1234 :32bit or something like this 20:35
grondilu :uint32 20:36
Nemokosch the details can be clarified ^^ 20:37
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grondilu still, what about blobs, they do know their types, no? So boolean operators could behave appropriately when mapped to them. 20:39
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grondilu m: say +^<<blob8.new(^10) 20:40
camelia (-1 -2 -3 -4 -5 -6 -7 -8 -9 -10)
grondilu ^I mean isn't that silly?
m: say +^<<blob8.new(^10).map: *.base(2)
camelia (-1 -2 -11 -12 -101 -102 -111 -112 -1001 -1002)
Nemokosch what happened here?
grondilu m: say (+^<<blob8.new(^10)).map: *.base(2) 20:41
camelia (-1 -10 -11 -100 -101 -110 -111 -1000 -1001 -1010)
grondilu blob8 is supposed to contain unsigned ints
Nemokosch oh, everything is just negative 😄
grondilu m: say +^my uint $ = 1 20:42
camelia 18446744073709551614
grondilu what happens in C if I do `short i = 1; long long j = ^i;`? I actually have no idea. 20:44
Nemokosch well, from what I can see 20:45
MoarVM itself doesn't know negations of different sizes
or at least doesn't expose such a thing to NQP
grondilu looks at docs.raku.org/language/numerics#Native_numerics 20:51
Geth App-Rakubrew: c82c3ae540 | (Patrick Böker)++ | 4 files
Track the master -> main branch rename in rakudo
App-Rakubrew: 990cde0ea9 | (Patrick Böker)++ | 3 files
Version 31
grondilu m: say (my uint8 $ = 0) -= 156
camelia Cannot modify an immutable Int (0)
in block <unit> at <tmp> line 1
grondilu m: say (my uint8 $) -= 156 20:52
camelia 100
grondilu m: say (my uint8 $) -= 100
camelia 156
grondilu m: say (my uint16 $) -= 100
camelia 65436
grondilu 🤔 20:53
m: say (my uint32 $) -= 100
camelia 4294967196
grondilu 😕
oh I see, here we mutate the variable so it has to stay in the same native type 20:54
m: my buf32 $b .= new: 1; $b[0] +^= 0; say $b 20:55
camelia Buf[uint32]:0x<00000001>
grondilu m: my buf32 $b .= new: 1; $b[0] = +^$b[0]; say $b 20:56
camelia Buf[uint32]:0x<FFFFFFFE>
grondilu maybe that's what I shoud do
Nemokosch clever 😄 I wonder how this works 21:00
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> qqx sets the topic to the cli response, 21:09
> qqx sets the topic to the cli response, 21:10
I didn't know that
bartolin grondilu: the "Cannot modify an immutable Int" is something, I've noted in github.com/rakudo/rakudo/blob/b0f9...kumod#L223 as well. It happens with int as well 21:28
m: (my int $x = 42) = 47
camelia Cannot modify an immutable Int (42)
in block <unit> at <tmp> line 1
bartolin (which still looks wrong to me) 21:29
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grondilu yeah that looks wrong 21:47
Nemokosch agreed 21:48
although I think it's understandable. I haven't actually checked but I suspect native variables are special-cased for assignment 21:50
hmm... they are stored in something called IntLexRef 21:51
grondilu thinks he had sped up Digest::RIPEMD about 2 times 😄 21:52
Nemokosch 👏
grondilu apparently by just using a reduce instead of a loop
which amazes me 21:53
github.com/grondilu/libdigest-raku...896cff0ca8
Nemokosch is bartolin and usev6 the same person?
bartolin Nemokosch: yes 21:54
tellable6 bartolin, I'll pass your message to Nemokosch
Nemokosch good to see you around 🎉 21:56
bartolin grondilu: nice 21:57
grondilu FP looks so nice. I'm still trying to figure out how to do it for the inner loop too, but it's not obvious 21:58
22:00 yay is now known as equinox
Nemokosch > buf32.new($h).clone xx 2 22:00
does this replicate the same clone or make two clones?
grondilu make two clones, hopefully
22:01 equinox is now known as equinox_
grondilu &[xx] is supposed to currify (I think that's the word) 22:02
Nemokosch seems that it returns two objects with different id's
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grondilu m: say rand xx 2 22:02
camelia (0.8816995699352017 0.8916930751171629)
grondilu m: say class {}.new.WHICH xx 2 22:03
camelia (<anon|1>|4297118153344 <anon|1>|4297118153376)
[Coke] it does the call and dupes the value
m: say (class {}.new xx 2).map(*.WHICH) 22:04
camelia (<anon|1>|3958285555904 <anon|1>|3958285556928)
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grondilu weird, I've managed to rewrite the inner loop with a reduce too, but now it's slighly slower 22:21
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grondilu in any case, it looks better. I put in on RC: rosettacode.org/wiki/RIPEMD-160#Raku 22:28
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habere-et-disper How do I use the bisectable6 bot? 22:42
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Nemokosch github.com/Raku/whateverable/wiki/Bisectable 22:44
tellable6 2022-12-12T21:54:20Z #raku <bartolin> Nemokosch: yes
Nemokosch long story short: you can specify e.g old=2022.07 new=2022.12, and then add your code
habere-et-disper bisect: old=2022.07 sub foo ( @bar = (2, *+7 ...^ * > 28) ) { say @bar } 23:02
bisectable6 habere-et-disper, On both starting points (old=2022.07 new=d52342e) the exit code is 0 and the output is identical as well
habere-et-disper, Output on both points: «»
habere-et-disper bisect: old=2022.07 sub foo ( @bar = (2, *+7 ...^ * > 28) ) { say @bar }; foo()
bisectable6 habere-et-disper, On both starting points (old=2022.07 new=d52342e) the exit code is 0 and the output is identical as well
habere-et-disper, Output on both points: «(2 9 16 23)␤»
Nemokosch do you have any objections? 23:03
23:05 jpn joined 23:28 jpn left 23:33 sena_kun left 23:55 jpn joined