🦋 Welcome to the MAIN() IRC channel of the Raku Programming Language (raku.org). Log available at irclogs.raku.org/raku/live.html . If you're a beginner, you can also check out the #raku-beginner channel!
Set by lizmat on 6 September 2022.
00:45 yewscion joined 00:48 yewscion left
elcaro Someone in another language community just posted a screenshot examples.raku.org/categories/cookb...mming.html 00:54
None of those old cookbook examples appear to work... In fact, that whole Examples page is outdated and possible should be removed
Or at least put behind a link stating that it's legacy information and may be out of date 00:55
Rather than linked from the main raku.org page
Not to mention the header says "Perl 6 Examples" 01:08
01:13 wbooze joined 01:23 wbooze left 01:40 comborico1611 joined 02:30 SrainUser left 02:43 JimmyZhuo joined 02:52 kylese left 02:53 kylese joined 03:02 JimmyZhuo left 03:05 JimmyZhuo joined 03:15 kylese left, kylese joined 04:13 Aedil joined 05:37 JimmyZhuo left 07:08 comborico1611 left 07:29 kst joined 07:56 yewscion joined 07:59 yewscion left 08:09 derpydoo joined 08:21 jjido joined 08:39 jjido left 08:43 Sgeo left 09:28 jpn joined 09:29 sena_kun joined 09:45 sena_kun left 09:54 euandreh left
itsrakanott That's okay. I actually just didn't name my file .rakumod, Huh. 09:58
But that got me interested, WHEN is it a file length issue? 09:59
lizmat for clarity: the length of the path of a file has been an issue on Windows before 2025.02, *not* the length of the file afaik 10:08
itsrakanott dang 10:13
10:15 derpydoo left 10:17 JimmyZhuo joined 10:56 derpydoo joined 11:12 melezhik joined
melezhik o/ 11:12
dropped some experemental feature called "replace" that might turn Sparrow into awk/sed reaplacement - if someone is interested - github.com/melezhik/Sparrow6/blob/...l-features 11:13
reaplacement sounds funny ) buy I meant replacement )) 11:14
11:17 Aedil left 11:28 melezhik left
itsrakanott i think that was me in Uiua server LOL 11:38
Such a small world
11:46 melezhik joined 11:56 melezhik left 12:08 peder left 12:15 peder joined 12:21 derpydoo left 12:33 jpn left
tbrowder hi, need some clarity on number handling. "0b1111" can be turned into its decimal equiv with .=Numeric but it doesn't show True with testing with ~~ as a NumStr or ~~ Numeric. is there a Rakuis way to show that Numeriic attribute? 12:34
12:34 melezhik joined
tbrowder all i can get is it is a Str 12:34
melezhik . 12:35
tbrowder m: my $b = "0b11111"; $b.= Numeric
camelia ( no output )
tbrowder m: my $b="0b11111"; say $b.=Numeric 12:36
camelia 31 12:37
lizmat m: my $b = "0b11111"; $b .= Numeric; dd $b ~~ Numeric
camelia Bool::True
lizmat m: my $b = "0b11111"; dd ($b .= Numeric) ~~ Numeric
camelia Bool::True
lizmat precedence issue maybe ? 12:38
tbrowder hm, i tried ($b ~~ Numeric).so and got False 12:39
lizmat m: my $b = "0b11111"; dd ($b .= Numeric).so 12:40
camelia Bool::True
tbrowder m: my $b="0b1111"; say ($b .= Numeric).so 12:41
camelia True
12:44 jpn joined
tbrowder maybe i'm going about it the wrong way. what i would like is to have $b as an arg to a sub and i would like a type in front that would test for its Numeric potential as a Str 12:45
in other words, the arg should be a NumStr. duh, maybe k 12:46
maybe i haven't actually tried that yet...
lizmat m: sub a(Str:D $a where *.Numeric) { dd }; a "0b111" 12:48
camelia sub a(Str:D $a where { ... })
lizmat m: sub a(Str:D $a where *.Numeric) { dd }; a "foo"
camelia Constraint type check failed in binding to parameter '$a'; expected anonymous constraint to be met but got Str ("foo")
in sub a at <tmp> line 1
in block <unit> at <tmp> line 1
12:49 jpn left
lizmat m: subset LooksLikeNumeric of Str where *.Numeric; sub a(LooksLikeNumeric:D $a) { dd }; a "0b111" # using a subset 12:50
camelia sub a(Str:D $a where { ... })
tbrowder i just got this to work...$arg is copy where ($arg .= Numeric) 12:54
melezhik another intersting feature of Sparrow Task Check DSL is soft checks - github.com/melezhik/Sparrow6/blob/...oft-checks
tbrowder thank you! 12:55
12:59 grondilu left
tbrowder m: subset StrNum of Str where *.Numeric; sub a(StrNum:D $a) { dd }; a "0b11"; a "z" 13:15
camelia sub a(Str:D $a where { ... })
Constraint type check failed in binding to parameter '$a'; expected StrNum but got Str ("z")
in sub a at <tmp> line 1
in block <unit> at <tmp> line 1
13:18 yewscion joined
timo m: sub a(Numeric(Str) $a) { dd }; say try a("0b11"); say try a(99); say try a("z"); say try a(Str); 13:27
camelia sub a(Numeric(Str) $a)
Nil
Nil
Nil
Nil
sub a(Numeric(Str) $a)
sub a(Numeric(Str) $a)
Use of uninitialized value of type Str in numeric context
in sub a at <tmp> line 1
sub a(Numeric(Str) $a)
timo m: sub a(Numeric(Str:D) $a) { dd }; say try a("0b11"); say try a(99); say try a("z"); say try a(Str); 13:28
camelia sub a(Numeric(Str:D) $a)
Nil
Nil
Nil
Nil
sub a(Numeric(Str:D) $a)
sub a(Numeric(Str:D) $a)
timo m: sub a(Numeric(Str:D) $a) { dd; dd $a }; say try a("0b11"); say try a(99); say try a("z"); say try a(Str);
camelia sub a(Numeric(Str:D) $a)
Nil
Nil
Nil
Nil
3
sub a(Numeric(Str:D) $a)
99
sub a(Numeric(Str:D) $a)
Failure.new(exception => X::Str::Numeric.new(source => "z", pos => 0, reason => "base-10 number must begin with valid digits or '.'"))
timo ah, not quite what i wanted, i see.
13:39 jpn joined 13:41 melezhik left 13:44 jpn left 13:49 jpn joined
tbrowder timo: i came back to explore further as you have already done. can we define a complex subset with a complicated where clause? 14:02
14:03 melezhik joined
melezhik . 14:03
tbrowder something like: subset X of Str where { my $a = $a ~~ /.../. 14:05
}
itsrakanott Can subsets do http requests? lol
tbrowder anyhow, you know what i mean 14:07
cover the case of the optional prefix for bin, oct, dec, and hex, plus a regex for the allowed chars in the nunber part, etc. 14:09
sounds like a speclalized number class now.... 14:10
or role
14:13 yewscion left
timo the where clause can be as complicated as you like, but be aware that it might have to be executed more often than you might expect 14:13
and yes, subsets can do http requests
with the meta-object protocol, you can make your types and classes and stuff as silly as you could possibly want 14:14
how about multi candidates that dispatch based on the current moon phase? 14:15
tbrowder ok, now i remenber yr prev warning LOL
timo classes where methods are present or absent based on a JWT looked up from a dynamic variable
tbrowder thnx
timo type checks that have a 1/1000 chance to randomly give the opposite result as expected 14:16
tbrowder đź‘Ť 14:17
14:20 JimmyZhuo left 14:21 abraxxa-home joined 14:53 melezhik left 15:02 Sgeo joined 15:33 abraxxa-home left 15:35 abraxxa-home joined 15:40 yewscion joined 15:53 abraxxa-home left 15:54 yewscion left 16:06 yewscion joined 16:08 Aedil joined 16:34 yewscion left 16:53 jrjsmrtn left 17:00 jrjsmrtn joined
tbrowder another question: is there any advantage (or disadvantage) of having a sub modifying its single arg in place over returning the result? 17:06
(with $arg is rw)
ugexe do you like functions that mutate their inputs? 17:12
its largely a question of the type of api you want to provide 17:13
generally using $arg is rw and modifying that directly should be faster, but i suspect you are not working on a project where that benefit would be relevant 17:14
tbrowder i went down that path and now am reconsidering based on the questions earlier about defining input constraints.
ugexe it is usually easier to reason about code that does not mutate its inputs
tbrowder for sure. 17:15
i have been dealing with number base translation and i probably caused some of my problems with the rw arg 17:16
anyhow, good point, i will stick with my revised code (return vs rw), thanks! 17:18
17:34 MyNetAz left 17:35 jjido joined 17:45 jjido left 17:49 MyNetAz joined 17:54 jjido joined 18:37 wayland76 joined
wayland76 Hi all! Just noticed that OpenFormula has % as a Postfix Unary operator that divides by 100 :) 18:38
18:44 jjido left
lizmat m: sub postfix:<%>($a) { $a / 100 }; say 100% 18:49
camelia 1
18:50 sena_kun joined 18:51 jpn left
wayland76 Nice :) 18:53
I figured we could do it too, I just hadn't run across the idea before. 18:54
19:00 tejr left 19:01 tejr joined
Voldenet timo: Yeah, C# uses (void*)0 for null more specifically, idk if any implementation could do it differently 19:09
I think unsafe context pretty much requires it, but in other contexts null could probably be class-specific pointer 19:10
19:39 Aedil left 19:46 yewscion joined 19:58 yewscion left
wayland76 I know with a lot of things. we can call .Int or .Str to get them as a number or string. Is there a generic .Scalar that will get called if neither .Int nor .Str exist? 19:58
librasteve wayland76: github.com/librasteve/raku-Physics.../issues/69 ... make % a first class export is a todo
... meantime you can go something like `use Physics::Measure; say ♎️'3%'; 19:59
wayland76 librasteve: Nice!
Hi! Regarding irclogs.raku.org/raku/2025-02-22.html#11:08 , I'm guessing I'd need to make a Slang that recognises ⪪body (ie. ⪪ plus characters allowed in a name). Would that be correct? And if so, are there any Slangs that already do this kind of thing? 20:07
20:10 [Coke] left 20:23 abraxxa-home joined 20:28 jjido joined 20:30 yewscion joined
wayland76 Do we have a good writeup on how to create a Slang? 20:32
librasteve you said html⪪body⪪h1{.id eq "red"} - i think you have a couple of options - (i) a full on slang suggest you check out raku.land/zef:lizmat/Slangify 20:33
then check reverse dependenices and see eg raku.land/zef:raku-community-modul...ang::Roman as a short example 20:35
(ii) you could try something likemulti infix:<⪪>($a, $b) {...} which I guess would imply that html, body are something like nodes defined as my \html = Node.new: :id<1234> 20:38
SmokeMachine Is it something like this what you want? github.com/FCO/p6-react 20:42
librasteve (iii) you could also consider where html, body are subs and then do the standard raku sub syntax like html( ⪪( body( ⪪( blah blah )))) that can be written as html ⪪ body ⪪ blah blah which needs to be space separated
SmokeMachine wayland76: ^^
wayland76 librasteve: Thanks! Knowing what (ii) and (iii) would do is helping to push me towards (i) :) 20:44
SmokeMachine: Interesting! I'm more after an XPath equivalent, but that module looks interesting anyway :) . 20:45
SmokeMachine wayland76: sorry… I should have read more before answering… 20:46
librasteve yeah - i need to get a slang under my belt 20:47
SmokeMachine wayland76: I like that too… but that’s 7 years old… my most recent try on raku web components is this one: github.com/FCO/Cromponent (but I do have a few tries… :( ) 20:54
wayland76 SmokeMachine: I'll be more interested in web components when I'm happier with tables, and trees; at the moment, I'm just keeping an eye towards, them, but not doing anything. 21:00
I think last time I just used Cro
And Vue + PrimeVue
21:09 yewscion left 21:11 yewscion joined 21:15 yewscion left
Voldenet tbh. wouldn't it be rather nice to simply support html through a slang? 21:22
plain `<div><b>hell</b>o world</div>` converting into `html("div", {}, [html("b", {}, ["hell"]), "o world"])` or something similar 21:25
21:26 librasteve_ joined
librasteve Voldenet: I have been making some progress on HTML as a functional library ... 21:28
librasteve_ www.irccloud.com/pastebin/fsW1sThs 21:29
Voldenet I've seen this already
It's ok, I'm not sure if not superior to html
but html can be written in static context (jsfiddle) and then copied to the file, I think that makes it a lot easier 21:30
otoh converting html to any format isn't really a challenge
but syntax is less foreign for most people 21:31
elm lang for example has nice and useful syntax, but quite foreign until you get used to it 21:32
librasteve yes, elmlang in raku is my initial direction 21:34
tbh, when I started this was an experiment as much to see what felt nicest to write web sites (give that I like to write stuff in raku and that for me HTML can be very hard to read 21:36
librasteve_ www.irccloud.com/pastebin/wzWUL4Hq 21:39
librasteve so far, my feeling is that the functional style is generally an improvement on HTML by suppressing the "tag noise", but this is a matter of taste for "bulk HTML" and the tooling for HTML is very good (jsfiddle) and there are good ways to do "near HTML" eg Cro templates 21:42
Voldenet `Safe.new: '&#9776;'` feels a bit weird 21:43
librasteve BUT ... (see that pastebin ^^) ... when you need to mix HTML and real code then functional is an awesome way to express the intent without needing to drop into string concat, angle brackets and so on 21:44
Voldenet also, the component tree probably renders to Str fully, it's fine until you want speed 21:46
wouldn't it be better to render it to component tree (so static parts can get optimized) and then produce one render sub doing a few concats? 21:47
that's what I assume because "self.style.HTML ~ (…) ~ self.script.HTML" exist 21:48
and it's all inside HTML method
21:49 jjido left
Voldenet in the trivial case it'd be slower, but on next runs it could get faster 21:49
and component could have .is-dynamic trait telling whether any external property is accepted, making the whole "cached static path" optimized 21:52
librasteve well, maybe a component tree would be better, but in the initial version I wanted to try out ideas to get to a point where the code style felt best - certainly this is early days 21:53
Voldenet s/trait/attribute/
yeah, it wouldn't change the syntax that much
it'd change the parts where "Safe.new" or .HTML is needed 21:54
or ~ op
librasteve you are welcome to look at the library repo (github.com/librasteve/Air) and the examples (github.com/librasteve/Air-Play) - these are already (WIP) zef modules also ... the code I shared is from the Air::Base module which consumes all standard HTML tags as sub and then exports some of these as overrides and some additional subs such as safe() so at the example level you can go safe '&#9776;' - to 22:00
avoid html escaping
22:00 jpn joined 22:06 [Coke] joined
the Air::Functional module is an improved version of HTML::Functional ... since I am quite a meat & potatoes coder it will probably be quite painful for me to write a component tree alternative --- so please do offer up a simple prototype for that componet tree idea and I can get a better idea of what that would look like and rewrite what i have so far 22:11
wayland76 Voldenet: I think the first link from SmokeMachine ( github.com/FCO/p6-react ) was supporting HTML through a Slang. 22:22
librasteve_: Your plans to make a Slang will be glad to hear I've just put together a bare-bones Slang tutorial. It's not much at the moment, but will hopefully be improved either by me as I learn, or by others. 22:23
Voldenet I'll see if using components tree in Air::Functional would be feasible 22:28
it'd require some rewrite
but maybe not that much
SmokeMachine wayland76: yes, that’s the module I implemented the “rakux” (in opposition to react’s jsx)
Voldenet wow, that p6x (rakux) slang is pretty neat 22:32
wayland76 Voldenet: Glad you like SmokeMachine's work :) I was worried I was hammering the obvious. 22:36
Voldenet np, I've missed the link 22:37
23:27 silug joined 23:31 sadomei joined, sadomei left 23:32 jpn left 23:33 sadomei joined 23:39 sena_kun left, sadomei left, sadomei joined 23:40 sadomei left 23:42 sadomei joined, sadomei left, sadomei joined 23:47 xinming left 23:49 abraxxa-home left

Powered by Cro and the Raku® Programming Language.

Please report any issues / comments / feature requests as an issue on App::Raku::Log.

Thank you!