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sacomo RaycatWhoDat: I'm using golang with NativeCall. Seems to work fine. Not sure what the most common language is though. 00:17
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moon-child RaycatWhoDat: c 02:14
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notandinus what is the |n| operator called? if n is positive it returns n, if not then it makes it positive, i thought it was called the modulus operator 06:15
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RaycatWhoDat Absolute value 06:21
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notandinus ah yes 06:37
and abs routine handles it 06:39
m: my @t = -1, -2; say abs(@t); 06:40
camelia 2
notandinus my @t = -1, -2; say @t.map(*.abs); 06:42
evalable6 (1 2)
notandinus loop {}
m: loop{}
camelia 5===SORRY!5=== Error while compiling <tmp>
Whitespace required after keyword 'loop'
at <tmp>:1
------> 3loop7⏏5{}
notandinus m: loop {}
hmm is there a timeout?
camelia (timeout) 06:43
notandinus nice
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notandinus can i make an int bound to a range? like say i make $t bound to 1 - 2 then $t++ after 2 will loop it back to 1 06:48
if $t == -1 then $t-- will loop it back to 2
guifa2 notandinus no, although you could write your own class that lets you 06:55
notandinus i see, thanks 06:57
guifa2 Not sure the exact context you have for it, but I think most people tend to only make adhoc ranges which makes such a thing fairly moot. Personally, I rarely if ever store them in a variable (only time I do, I think, is when I'm subs to accept them as arguments) 06:59
notandinus tokens will be faster than regex right? 07:08
if i write both token and regex in a way that regex too doesn't backtrack then will token still be fast? 07:11
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guifa2 a token is literally just a regex with the :ratchet option applied 07:38
token { foo } == regex { :r foo } 07:39
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guifa2 Egads, my CLDR compiler finally finished.... 5 hours later. 07:43
jmerelo Did you check out today's advent calendar article? raku-advent.blog/2020/12/12/day-12...u-feeling/
guifa2: did it work? 07:44
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guifa2 jmerelo: yes! It's not *quite* ready for release, and unfortunately I'll be out of town for a week or so so it maybe will be ready around new years 07:45
jmerelo guifa2++
guifa2 But all of the precalculations are well worth it
When using it as a module, it's a literal order of magnitude or two faster to access stuff 07:46
and load
And the data files are smaller too!
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notandinus jmerelo: it has a typo in second code block 07:58
await $one-second should be $one-second-passed 07:59
raku-bridge <frost> Hi, I think there is a mistake in today's advent calendar article. In the second example code, it should be await $one-second-passed
jmerelo notandinus: let me check that
guifa2 Yup, definitely a typo 08:01
raku-bridge <frost> Haha, someone has noted it.
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jmerelo notandinus: should be good now. Thanks for the heads up! 08:07
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notandinus yw, 08:11
hmm rss feeds also get updated with the changes
moon-child notandinus: btw, you can just
jmerelo notandinus: they should feed from the same SSOT :-)
moon-child m: print [-1, -2].map(&abs) 08:12
camelia 1 2
moon-child fewer lexemes to think about
notandinus moon-child: i see, thanks 08:14
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sacomo hi all, anyone have a way of listing all of the modules / dependencies / dependency's dependencies, etc that a script uses? 08:51
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tadzik RAKUDO_MODULE_DEBUG=1, if that's still a thing :) 08:57
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notandinus what does raku mean by this: paste.debian.net/hidden/52f9b8a2/ ? 09:20
code included in it ^
if i move @directions inside of the sub routine then the error goes away
all of this is in sub MAIN,
if i move both outside of sub MAIN then the error goes away
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guifa2 jmerelo: okay crazy, 09:41
I'm actually BEATING the built in .Str for DateTime
imgur.com/a/wqR1pvf 09:42
guifa2 pats himself on back
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jmerelo guifa2++ 09:59
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notandinus ok i understood that, it was because @directions needs to be defined before the subroutine is called 10:36
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xinming_ m: my $t = 0; for 3 .. 5 { my $a = 10 + $_; FIRST $t = $a; $a.say; }; "value: $t".say; 11:12
camelia 13
Use of uninitialized value element of type Any in string context.
Methods .^name, .raku, .gist, or .say can be used to stringify it to something meaningful.
in block <unit> at <tmp> line 1
xinming_ In this example, the $a in FIRST will get Nil, What is the right way to achieve this please? 11:13
I know I can doing something like, if $t == 0 { $t = $a }; But I wish to understand wether we can have FIRST DWIM 11:14
moritz $t ||= $a ? 11:15
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xinming_ moritz: Nope, what actually I want is doing something with FIRST phaser. 11:16
I just realized, maybe I can't do that.
moritz FIRST runs before the code in the loop body 11:22
xinming_ Yea, I just realized that. :-) 11:23
Need real world example to learn the lesson.
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notandinus can i make amulti sub based on return value? 11:27
moritz notandinus: no
notandinus i see
moritz that would break causility
*causality 11:28
notandinus what does that mean? 11:29
oh if i specify the return value type in signature, should be possible then right?
moritz consider a(b()). If &a and &b are both multis, things get complicated 11:33
in Perl, context flowed inwards; the caller told the callee which context (list, item, void) it expected
Raku takes the opposite approach: routines return objects, and those objects can know how to be usable in different contexts 11:34
also, consider this: multi sub a(returns Int) {}; multi sub a(returns Str) { }; multi b(Int, Str) {}; multi b(Str, Int) {}; b(a(), a()) 11:35
just a simple example of an ambiguity if we allow dispatch based on return values 11:36
it's even worse if there are multis with many arguments, which are the return values from other multis
notandinus ah i see, makes sense, thanks 11:37
moritz then you have, in the worst case, and NP problem trying to solve which multi to call :-)
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notandinus hmm 11:40
m: sub l ($t?) { say 'hi' } l();
camelia 5===SORRY!5=== Error while compiling <tmp>
Strange text after block (missing semicolon or comma?)
at <tmp>:1
------> 3sub l ($t?) { say 'hi' }7⏏5 l();
expecting any of:
infix stopper
statement …
notandinus sub l ($t?) { say 'hi' }; l(); 11:41
evalable6 hi
notandinus oh i was wondering why it was failing
hmm this still fails with `raku -e` 11:42
says missing block at 'sub l(HERE'
is -e and what evalable6 does different? 11:43
.tell lizmat links to book "using raku" and "perl 6 at a glance" need to be updated in r/rakulang sidebar 11:48
tellable6 notandinus, I'll pass your message to lizmat
notandinus can we specify multiple return signatures ? something like " --> Int|Bool"? 11:54
lizmat notandinus thanks for the nudge, fixed 11:56
re Junctions in return sigs, no, you can't, at least not atm 11:57
notandinus lizmat: hmm raku.online doesn't seem to work,
andrewshitov.com/contents/ 11:58
lizmat that's the link I just put in?
notandinus oh are you using the new reddit?
lizmat argh I need to change that at two place?
which URL do you use ?
notandinus i'm using the old one 11:59
not sure if both are different
MasterDuke m: subset IB where Int|Bool; sub a(--> IB) { return "ab" }; a
camelia Type check failed for return value; expected IB but got Str ("ab")
in sub a at <tmp> line 1
in block <unit> at <tmp> line 1
notandinus on old one i see raku.online links which don't work
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MasterDuke notandinus: you can, but have to use a pre-defined subset 12:00
notandinus this works: andrewshitov.com/using-perl6/ 12:01
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notandinus MasterDuke: i see, makes sense 12:01
i'll checkout subset
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JackChidley I have noticed an error in the Linux installation instructions on rakudo.org/star/source any idea where to report this? 12:04
Never mind - I've just spotted the Issue Tracker at the top of the page 12:06
notandinus rakudo.org/issue-trackers
:) 12:07
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lizmat notandinus fixed links in old reddit as well 12:16
notandinus lizmat: thanks, so they are different sidebars? 12:17
lizmat apparently, I needed to change it in 2 places
which took a little figuring out
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notandinus what would be better, a state or global var ? 12:32
i have a subroutine that will push to a variable but i want it to remember previous pushes so that it can return quickly without recomputing 12:33
kinda like memoization
so should i make that array a state or global var ?
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notandinus what causes this: paste.debian.net/hidden/8776c48f (code included) 12:52
with every push the previous push value changes
even though .say confirms that the values i'm pushing is different 12:53
line before represents what i'm pushing and line after the array after the push, every push is changing all previous values 12:54
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notandinus it works as expected when i change the pushed data to hash but i want to keep it an array 13:01
hmm works fine when i make it .Array, it was .List 13:02
what causes list to behave like this?
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coldpress my guess is: the wrong behavior is because all elements refer to the same object, pass-by-reference. The correct behavior with .Array is because each element now refers to different objects. 13:10
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notandinus ah i see, let me check that 13:11
coldpress: yeah that is it, i checked by not pushing but changing the value 13:13
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notandinus hmm so the fix is to push .Array? 13:13
coldpress not sure how .Array is different from .List, maybe the perl monks here can explain
lizmat perl monks ? 13:16
notandinus here:
Assignment of a list to an Array is eager.
raku monks
can i make it non-eager? 13:17
coldpress lizmat: perlmonks.org/ 13:19
lizmat coldpress: I know of Perl Monks, have been a monk for a long time until a very vocal part of the monastery made me decide to leave 13:20
notandinus is it becuase of that thing i linked? ^ i'm not sure how that would affect pushes
lizmat notandinus: am currently too busy to look into your question, hope someone else will pick up 13:21
notandinus i see, it's fine 13:22
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raiph notandinus: ping 15:43
tellable6 hey raiph, you have a message: gist.github.com/b7b231f18a67a9fed1...25b37b40c1
Geth doc: uzluisf++ created pull request #3731:
Rework the Iterating page
raiph notandinus: An `Array` is a subtype of `List` but their behaviours are also complementary.
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raiph notandinus: `Array`s zig in several ways where `List`s zag. 15:51
notandinus: This is true of their literals. 15:52
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raiph notandinus: If you switch your code from pushing `($pos-y, $pos-x)` to `[$pos-y, $pos-x]` you'll find it works. 15:53
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raiph notandinus: This is because the `Array` literal constructor just takes the *values* contained in the Scalar`s `$pos-x` and `$pos-y` and puts those values into its own fresh `Scalar`s. 15:56
notandinus: Whereas the `List` literal constructor does *not* by default put values in `Scalar`s -- but if you list one, it stores that instead of the value it contains. 15:58
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raiph .tell notandinus colabti.org/irclogger/irclogger_lo...12-12#l306 16:00
tellable6 raiph, I'll pass your message to notandinus
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raiph notandinus: (I guess that should be "stores the listed `Scalar` *as well as* the value it contains, but the point is that that value can then change.) 16:03
coldpress Is it weird if my 2D-Array algo is > 2x slower with CArrays, compared to Raku Arrays? 16:06
The 2D Array has 100 rows and 100 columns 16:07
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raiph coldpress: No. It all depends on the details. cf www.nntp.perl.org/group/perl.perl6...g8857.html 16:19
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tbrowder hi, anyone still using Padre for Perl projects? 16:36
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lizmat tbrowder: feels like #raku is the wrong channel to ask ? 16:45
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tbrowder well, we have a lot of 16:46
yepper 16:47
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codesect` is there a way to use `#` as on of the characters with the TR operator? 17:19
m: say (TR/a#/AB/ with 'ab#c')
camelia 5===SORRY!5=== Error while compiling <tmp>
Please backslash # for literal char or put whitespace in front for comment
at <tmp>:1
------> 3say (TR/a#7⏏5/AB/ with 'ab#c')
codesect` m: say (TR/a\#/AB/ with 'ab#c')
camelia Ab#c
codesect` ^^^^ doesn't error, but it doesn't work 17:20
(the .trans method works fine, so it's not a big deal; just currious) 17:21
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lizmat m: say (TR/ a '#' /AB/ with 'ab#c') 17:27
camelia 5===SORRY!5=== Error while compiling <tmp>
Please backslash # for literal char or put whitespace in front for comment
at <tmp>:1
------> 3say (TR/ a '#7⏏5' /AB/ with 'ab#c')
[Coke] I've tried a few iterations locally, don't see one that works with # 17:28
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codesect` interesting. Thanks to you both 17:44
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morayj Someone's uploaded a module for Raku to cpan called Game::Amazing (a couple of days ago) and it's not appeared on modules.raku.org Does something else need to be done, or is there an interval? 17:58
Altai-man morayj, I am not 100% sure, but I'd say its META json is invalid: github.com/arnesom/raku-game-amazi...6.json#L18 18:09
Altai-man sent a PR 18:11
morayj Altai-man: Great...thanks! 18:12
Altai-man morayj, you are welcome 18:13
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Altai-man rba, ping? 18:28
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patrickb I currently fail to make a script access resource files. Shouldn't `raku -I. bin/some-script.raku` be able to do `%?RESOURCES<some-file>.slurp`? (There is a META6.json listing the file) 18:56
tellable6 2020-12-10T23:21:41Z #raku <melezhik> patrickb: at some point I was trying to help tony-o as well, he is aware, with new eco system stuff . For example - sparrowhub.io/search?q=function
2020-12-11T16:23:57Z #raku <tony-o> patrickb sent you an email
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Geth doc/eval-2905: 3cca92e7b2 | (Stoned Elipot)++ | doc/Type/independent-routines.pod6
Document EVAL $check and $filename parameters

  - ref #2905
  - Add a small introduction to EVAL routine's description
  - Bring EVAL prototype (mostly) in sync with Rakudo's current
  - Also mention EVALFILE's $check parameter
  - Use 'Perl' word
  - Use '.raku' filename suffix
doc: stoned++ created pull request #3733:
Document EVAL $check and $filename parameters
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codesect` why is this allowed? 19:50
m: my uint64 $a = -5; say $a
camelia -5
sena_kun codesect`, as far as I heart, support of native types like this one is kind of ad-hoc and is known to be troublesome. 19:53
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MasterDuke the signed native types are better than the unsigned, and the unsized are better than the sized. (better in the sense of working more like they're supposed to) 20:19
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Geth doc/eval-2905: d6b231a6b4 | (Stoned Elipot)++ | doc/Type/independent-routines.pod6
Unformat Perl word
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