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Set by lizmat on 6 September 2022.
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Voldenet using class trait isn't that hard, but I have no idea how to export a sub into caller context 00:41
m: multi sub trait_mod:<is> (Mu:U $target, :$subbed!) { say $target.^name; }; class MyPage is subbed { }; 00:42
camelia MyPage
Voldenet m: my $subs; sub p {}; multi sub trait_mod:<is>(Mu:U $target, :$subbed!) { $subs{$target.^name.lc} = sub (*@a, *%h) { $target.new(|@a, |%h) }; }; class MyPage is subbed { }; say $subs<mypage>() 00:52
camelia MyPage.new
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Geth docker: 02696336f5 | AntonOks++ | 4 files
Bump to 2025.02 [skip workflow]
 03:06
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.landyacht. I've been fiddling with this for a while and I just cannot get anything to work 03:52
I was thinking something like GLOBAL::.ASSIGN-KEY(...), but maybe the order in which things happen isn't right for being able to use that in a trait_mod 03:53
also tried adding it to the EXPORT::DEFAULT of the package being is subbed'd but that didn't pan out either 03:55
this is probably easier with RakuAST? 03:56
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okay, using the actual Rakudo implemention of is export as a reference, there is a (naughty) way to do it 04:15
unit module Subbed; multi trait_mod:<is>(Mu:U $class, :$subbed!) is export { my $nice-name = $class.^name.lc.subst('::', '-'); my @tags = < ALL DEFAULT >; Rakudo::Internals.EXPORT_SYMBOL("&$nice-name", @tags, sub (*@pos, *%named) { $class.new(|@pos, |%named); } ); } 04:17
referenced: github.com/rakudo/rakudo/blob/f8b1...kumod#L278 04:19
cc @librasteve 04:21
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melezhik. . 06:57
tellable6 2025-03-01T13:56:44Z #raku <tbrowder> melezhik you should audition for Saturday Night Live
melezhik. .tell librasteve: you may pick up sparky badge for Air if you wish , itā€™s ready 06:58
tellable6 melezhik., I'll pass your message to librasteve
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melezhik. . 10:48
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How can I substitute line number N in multiline string in Raku ? 11:55
m: my $a = ā€œok\nhello\ndoneā€; 11:58
evalable6
Raku eval
melezhik. m: my $a = ā€œok\nhello\ndoneā€; my @a = $a.split(ā€œ\nā€); @a[1] = ā€œbyeā€; $a = @a.join(ā€œ\nā€); say $a; 12:02
evalable6 ok
bye
done
Raku eval ok bye done
tbrowder Voldenet: thanks, that helps a bit, 12:32
rir: yep, but i can't for now see any practical use for :U in my world 12:33
tellable6 tbrowder, I'll pass your message to rir
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Voldenet now that I think of it, C# have recently introduced the nullable reference type, which is a bit like type smileys 13:01
in that case, `void X(F? f) {}` accepts both F? (nullable) and F (not nullable) 13:02
but `void X(F f) {}` accepts only non-nullable version
(it prints warnings) 13:03
so I suppose seeing the use cases for C# reference nullability could be helpful in grasping what it's useful for
however `sub x(F:U $f) {}` is something that doesn't appear in C# at all 13:04
probably because there's no type object, because type info is passed through generic invokation parameters 13:05
timo yeah C# shares a single null value like many other languages do, right? 13:35
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antononcube weekly: rakuforprediction.wordpress.com/20...ns-graphs/ 15:34
notable6 antononcube, Noted! (weekly)
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librasteve Rog: soz - that 8 hours became 16 due to $day-job ;-( ... thanks indeed for your proposal I have tried it with my code and despite some messing with tag names had no luck ... do you think maybe I need ot have a use MONKEY-TYPING switch on maybe? am I missing something else? 16:08
tellable6 2025-03-06T06:58:31Z #raku <melezhik.> librasteve: you may pick up sparky badge for Air if you wish , itā€™s ready
librasteve Melezhik - thanks! I will add to my todos when i get to test... 16:09
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.landyacht. I think youā€™ll have to actually import the package containing the subbed class 17:01
I split my code into three files 17:02
One with the subbed class as a unit class
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Another for the trait itself, and then a script to pull in the subbed class and use the constructor sub 17:15
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SrainUser How can I match more than one end of line statements in my grammar? Code: 21:18
grammar statements {
rule TOP {
<statement>*
}
rule statement {
"hello" $$
}
}
my Str $source = "hello\nhello";
say statements.parse($source)
[Coke] m: grammar statements { rule TOP { <statement>* }; token statement { 'hello' $$ \s* } }; my Str $source = "hello\nhello"; say statements.parse($source) 21:30
camelia ļ½¢hello
helloļ½£
statement => ļ½¢hello
ļ½£
statement => ļ½¢helloļ½£
[Coke] I think the rule's interaction with the \n was getting confused. 21:31
making it all explicit with the token was easier for me, anyway.
(note that the newline is in the first capture there, we could tweak that so it isn't captured. 21:34
SrainUser So it matches when there could be whitespace after the end of line? 21:41
Like it doesn't recognize $$
How would I not capture newline? 21:42
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[Coke] m: grammar statements { rule TOP { <statement>* %% \s* }; token statement { 'hello' $$ } }; my Str $source = "hello\nhello"; say statements.parse($source) # should work 21:54
camelia ļ½¢hello
helloļ½£
statement => ļ½¢helloļ½£
statement => ļ½¢helloļ½£
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[Coke] I moved the whitespace check up into TOP and said the statements are separated by whitespace - there's more than one way to do it. 21:56
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SrainUser Could you repeat that example again? My wifi went down. 22:25
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SrainUser I was able to check the irc logs. Thanks Coke. 22:42
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[Coke] oh good. I just back and also replied in private chat before I saw this. ;) 23:14
*got
itsrakanott Hi guys. Has anybody experienced issue of rakudo not being able to find import modules on windows? It searches exactly where the module resides and still lets out an erroring trace. How is that even possible lol 23:15
ugexe yes, when i was doing something wrong 23:38
regardless if you want some actual advice you'll want to post a golfed example of your issue, the command you are running, all of the output, and like a file listing of the path your modules are supposed to be 23:39
also your version of rakudo would be useful to know in case it is the file length issue
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