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Set by lizmat on 8 June 2022.
greenfork Is this OK that with this signature: `multi sub infix:<mod>(Int:D $a, Int:D $b --> Int:D)`, I can do the following 11:53
m: say 10.3 mod 3.3
camelia 0.4
greenfork And this is equivalent to
m: say 10.3 % 3.3
camelia 0.4
lizmat m: dd (10.3).WHAT 11:54
camelia Rat
lizmat m: dd (10.3).WHAT ~~ Int
camelia Bool::False
lizmat greenfork: a Rat is not an Int, so that signature will not be selected
greenfork Documentation says: Integer modulo operator. Returns the remainder of an integer modulo operation. 11:57
docs.raku.org/language/operators#infix_mod
I'm confused why it says "Integer"
lizmat greenfork: this appears to be a recent change: github.com/Raku/problem-solving/issues/326 12:02
that apparently didn't make it to the documentation yet
greenfork I see, thank you! 12:06
lizmat having said that, it feels that: 12:09
m: say 10.3 mod 3.3
camelia 0.4
lizmat is wrong, I'd expect it to produce 1, like 12:10
m: say 10 mod 3
camelia 1
lizmat as opposed to %
m: say 10.3 % 3.3
camelia 0.4
greenfork I agree, if mod and div are similar, then the behavior should be like for div 12:15
m: say 10.3 / 3.3
camelia 3.121212
greenfork m: say 10.3 div 3.3
camelia 3
lizmat greenfork: you might want to re-open or make a new problem solving issue for that: github.com/Raku/problem-solving/issues/326 12:22
greenfork lizmat: I will do so, sure 12:24
lizmat ++greenfork
greenfork lizmat: I added a comment to the same issue, but I can't re-open it 12:50
lizmat reopened now, thanks! 12:51
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user1729 Hi, quick question, what's the raku way / equivalent of developer.apple.com/documentation/...x(while:)? Can of course write something, but feels like the sort of thing raku'd have built in 13:24
lizmat docs.raku.org/type/Any#method_toggle perhaps ? 13:26
user1729 Ah, yup, that'll work. Thanks. I don't imagine I'd have come across that with what I was searching for in the documentation 13:34
lizmat perhaps someone should write a Go -> Raku nutshell guide :-)
user1729 A migartion guide covering an entire standard library would be quite the task 13:42
lizmat agree... :-)
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rcmlz @antononcube - would that be to conpkex to ask LLM for? Will an LLM come up with all the toggle/snatch/snitch/rotor/categorize/25-strange-things-more stuff you do not find easily in other languages? 14:48
antononcube @rcmlz I have done a few experiments with that -- YMMV, a lot! 14:51
@rcmlz Basically, converting simple Python libraries to Raku works, but you still have to correct/change between 5% to 20% of the generated code. Converting Raku librarires to Python also kind of, sort of works. Again, manual changes are needed. 14:53
I think it really depends on the problem domain. In a few cases, I was considering not converting an existing library to Raku, but make a new Raku library for the same functionalities from scratch using LLM-support. 14:54
Over-developed Python libraries are hard to convert. I could not easily convert into maningful -- to me -- Raku code Python LLM libraries released by OpenAI, Google, or MistralAI. 14:56
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rcmlz ChatGPT proposes a grep based solution. Probability nit enough toggle-solutions in the trainingdata …. :-( chat.openai.com/share/85f7f602-3c3...26ff6201e5 15:00
lizmat yeah, toggle is pretty new
grep will work, with a "last" if you're done
rcmlz But interestingly it got it right, after explicitly asking for toggle. „The toggle method is useful for iterating over a sequence and collecting elements until a condition becomes false.“ 15:03
antononcube @rcmlz Sorry, I answered a different question it seems. I read the statement: > A migration guide covering an entire standard library would be quite the task as : > A migration converting an entire standard library would be quite the task 15:06
I guess, I just needed an excuse to talk about LLM-conversions of software libraries. 🙂 15:07
librasteve there is some kind of 3 way integer mod routine, please can someone remind me of the name? 15:17
lizmat 3 way ? 15:34
librasteve yeah I recall seeing an example that went something like 86400.threewaymod(24,60,60) 15:37
lizmat polymod ? 15:38
docs.raku.org/type/Int#method_polymod
librasteve yep
you are a genius!
lizmat It's actually N-way :-) 15:39
librasteve yeah, so polymod has the documented signature: method polymod(Int:D: +@mods) 15:43
m: say ⅔.polymod(⅓);
Raku eval (0 2)
librasteve so that Int:D is neither doing a type check, nor a coercion ;-) 15:44
lizmat i think that's a doc issue 15:45
librasteve I think the examples are great and what polymod should dwim ... but maybe I should go for a doc issue (do you agree?)
lizmat yes
librasteve snap
back on vanilla mod, then something is definitely broken... I found this
m: say 10 mod 3.4 15:46
Raku eval Exit code: 1 Cannot resolve caller infix:<div>(Int:D, Rat:D); none of these signatures matches: (Int:D $a, Int:D $b --> Int:D) (int $a, int $b --> int) (uint $a, uint $b --> uint) in block <unit> at main.raku line 1
librasteve m: say (10 mod 3.4)
Raku eval Exit code: 1 Cannot resolve caller infix:<div>(Int:D, Rat:D); none of these signatures matches: (Int:D $a, Int:D $b --> Int:D) (int $a, int $b --> int) (uint $a, uint $b --> uint) in block <unit> at main.raku line 1
librasteve hmm in the repl I get [27] > 10 mod 3.4 -0.2
github.com/Raku/doc/issues/4446 15:51
lizmat librasteve++
librasteve ^^^ that's polymod "sorted"
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nhail Thanks for the response. There is a bit of XY problem going on on my end, I'm trying to make use of the StrDistance feature in Raku to calculate Levenshtein distance. The working method for me is StrDistance.new(before=>'new',after=>'old'), but this is kind of long, and I was looking for a way to do it with tr/// instead. 19:07
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