This channel is intended for people just starting with the Raku Programming Language (raku.org). Logs are available at irclogs.raku.org/raku-beginner/live.html
Set by lizmat on 8 June 2022.
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disbot4 <ng0177> throws an error... @antononcube : any hints? 10:26
<ng0177> cdn.discordapp.com/attachments/768...16fb7&
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disbot4 <antononcube> @ng0177 Most likely, because you are mixing numbers and strings in the data. 11:29
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ab5tract @ng0177 you can use -> Int() $x { ... } to ensure coercion to an integer (Num(), Rat(), etc are also available) 11:46
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msiism What's a good way to push hashes onto an array "by value" or create an anonymous copy and push that? 11:57
lizmat are the hashes you push supposed to be mutable? 11:59
msiism Yes. 12:00
Well, that would be nice.
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lizmat so, would it matter that if you push the same hash more than once, that changes in one would be reflected in the other ? 12:01
msiism Yeah, pushing the same hash more than once would matter. The hashes represent web bookmarks with an id, url, description etc. 12:02
I'm trying to build an array that holds each bookmark once. 12:03
The loop fills a hash called %bookmark that is pushed to the array @bookmarks, when all the key-value pairs are in. 12:04
lizmat ok, why are you using a hash, and not create a Bookmark class? 12:05
msiism Lack of knowlegde. :)
ab5tract :)
One major goal of Raku is to make class definition syntax so streamlined that reaching for it for its use cases comes as second nature 12:06
lizmat class Bookmark { has $.id; has $.url; has $.description... }
ab5tract *reaching for it for the relevant use cases 12:07
msiism Okay, so this is a bit like a struct, I see.
I'll go read up on classes. 12:09
It would still be nice to know how to actually create an array of hashes, in case I ever need that.
lizmat my @a = { a => 42 }, { b => 666 }, { c => 137 } 12:12
disbot4 <nahita3882> maybe you can do @arr.push: %bm.clone; if you don't want later changes to %bm effect the array 12:17
<nahita3882> but if %bm gets renewed every iteration, then there is no risk of modification down the line?
lizmat that'd be one solution: if no changes should happen to the hash after you push, you can also coerce it to a Map 12:18
@arr.push: %bm.Map
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ab5tract @ng0177: on second glance, the issue appears to be that @data should be an array-of-hashes 12:24
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disbot4 <nahita3882> i think if they replace my @data = [ 'X', 'Sin(X)' ]; with my @data; it should work 12:28
<nahita3882> library seems to accept array of arrays as well
<nahita3882> yet another unfortunate instance an LLM isn't helpful compared to the documentation itself 12:29
msiism ab5tract: Yeah, that was what I wanted it to be – an array of hashes. 12:30
disbot4 <nahita3882> questions mixed up 12:31
msiism Oh, right, my bad. 12:32
ab5tract msiism: I think classes are a nice way to approach this. You can even create a Positional and override SET-POS to define the behavior your want to execute for duplicated entries 12:41
msiism Interesting. 12:42
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disbot4 <nahita3882> S/SET-POS/ASSIGN-POS/ 12:58
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disbot4 <antononcube> @ng0177 After commenting out the first assignment to @data (i.e. my @data; # = [ 'X', 'Sin(X)' ];) and using the option format=>'html' I get this plot HTML file/plot: 14:20
<antononcube> cdn.discordapp.com/attachments/768...cb7fa&
<antononcube> I am not sure why you put the first row of @data to be the array of strings ['X', 'Sin(x)'] -- this might be how Google Charts examples show plot data in their HTML/JavaScript code, or it can be "CSV thinking." There is no need in Raku for that and I consider it wrong. But if many people expect it to work I can make it a "guaranteed" functionality. 14:30
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disbot4 <ng0177> Thank you, the code compiles w/o problems. I guess, something is wrong with viewing the html? 16:03
<ng0177> cdn.discordapp.com/attachments/768...3ab5f&
<ng0177> cdn.discordapp.com/attachments/768...95a7d&
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disbot4 <ng0177> I let Gemini create the code. I agree that the first line is an overhead. 16:06
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