🦋 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.
01:02 Manifest0 left 01:23 ryoskzypu left 01:24 ryoskzypu joined 01:36 ryoskzypu left, ryoskzypu joined 01:41 nil78 left 01:47 nil78 joined 02:59 hulk joined, kylese left 03:06 mtj joined 03:15 hulk left, kylese joined 04:15 wbooze joined 04:39 jpn joined 04:43 jpn left 05:03 wbooze left 05:19 wbooze joined 05:37 Aedil joined 06:10 Aedil left 06:27 Aedil joined 07:26 silug left 07:53 silug joined 08:25 ACfromTX left 08:33 Sgeo left 08:39 Manifest0 joined 08:49 jpn joined 09:01 jpn left 09:12 jpn joined 09:13 ACfromTX joined, dakkar joined, wayland76 joined
wayland76 Hi all! 09:14
09:17 jpn left 09:25 jpn joined
librasteve good morning 09:35
wayland76 I'm trying to implement a bunch of operators that will allow us to walk trees like XPath. I've seen the .tree function (not well documented). I think I'm going to have to make some custom iterators for them. At the moment, I'm just trying to get .tree() to output each element separately instead of as an array. 09:39
m: <c b a>.tree(*.self.say) 09:40
camelia (c b a)
wayland76 What am I doing wrong?
m: <c b a>.tree(*.say) 09:41
camelia (c b a)
wayland76 Actually, I've figure I was getting over-fancy. But I'm still going to want something that walks a tree and just selects the nodes that match a function (like grep, but walks a tree). Any tips? 09:47
09:57 sena_kun joined 10:09 wbooze left
antononcube Look at Cases of Wolfram Language: reference.wolfram.com/language/ref/Cases.html 10:10
I strongly suspect that RakuAST is the best way to do this. Also, there are recent discussions here about similar functionalities. 10:18
See / search discussions around “tree-sitter”. 10:21
10:27 sena_kun left
wayland76 antoncube: Interesting! The Wolfram one I'm assuming was for inspiration. The RakuAST stuff looks interesting, but I'm trying to a) make something that'll work at least somewhat on any nested data structure (which I'm not sure the RakuAST stuff does), and b) will call a "parent" method if available, to allow walking up the tree, or sideways, or whatever. 10:32
Anyway, I've got my operators for child, descendent, and self working, so I'll stop for the night (9:33pm here). I think the next step will be to have it match against a LibXML document. 10:34
I'm hoping to have operators that do most of the tree walking that XPath axes can do (parent, ancestor, following-sibling, etc). 10:35
10:35 wbooze joined
lizmat tbrowder: re Data::Dump::Tree github.com/nkh/P6-Data-Dump-Tree/i...2668321046 11:14
tbrowder lizmat: thnx 11:39
m: say "\x[120]"; say "\c[100]" 11:40
camelia Ġ
d
tbrowder m: say "\o[200]" 11:41
camelia
tbrowder is there any way to use an octal number in the string to get a char? 11:42
i know you can in a pod string
postscript uses \nnn inside the string as a char refererenc, but i don't think that would work 11:44
m: say "\O[200]" 11:45
camelia ===SORRY!=== Error while compiling <tmp>
Unrecognized backslash sequence: '\O'
at <tmp>:1
------> say "\<HERE>O[200]"
expecting any of:
argument list
double quotes
term
lizmat m: say "\o[101]"
camelia A 11:46
lizmat m: say "\o101"
camelia A
lizmat looks to me \o does what you want ?
m: say 0o101 11:47
camelia 65
lizmat m: say 0o101.chr
camelia A
tbrowder yes, i'm no sure that's in the docs. the two hex and dec forms are together
lizmat if it's not in the docs, it should be :)
tbrowder yes, for sure 11:48
thank you! it makes my old redbook very useful again 11:49
m: say "0d10" 11:51
camelia 0d10
tbrowder m: say 0d10 11:52
camelia 10
tbrowder m: say 0o101
camelia 65
13:21 wbooze left 13:31 melezhik joined
melezhik . 13:31
weekly: sparrowdo.wordpress.com/2025/02/19...sparrowdo/
notable6 melezhik, Noted! (weekly)
13:35 melezhik left 13:49 topnep left 13:52 topnep joined, topnep left 13:55 topnep joined 14:05 jpn left 14:09 jpn joined 14:12 apac joined
tbrowder i just submitted a docs PR 14:35
14:39 euandreh joined 14:51 ryoskzypu left 14:53 ryoskzypu joined 15:25 euandreh1 joined 15:27 euandreh left, euandreh1 is now known as euandreh 15:29 Aedil left 15:43 Aedil joined 16:10 Guest45 joined 16:11 Guest45 left 16:25 dawids_ joined
librasteve wayland76: sorry went out for a bit, how about 16:38
m: say [[1,2,3],[[4,5],6,7]].deepmap({$_ %% 2 ?? $_ !! Empty});
evalable6 [[2] [[4] 6]]
Raku eval [[2] [[4] 6]]
librasteve (or duckmap) 16:39
?
17:08 silug left 17:11 dawids_ left, silug joined 17:13 Mrtophat joined
timo is there something convenient that's like "zef look" but instead of extracting a release it "git clone"s a distro's source repo to a folder on my disk? 17:15
17:16 Mrtophat left
melezhik. timo: I am recalling I did some automation , but not exactly what you are asking , if you just need a source code from tarball you may use this - sparrowhub.io/plugin/zef-fetch/0.001000 17:24
Maybe I can adjust it a bit and return scm repo via state as well, as long as it is valid in META6.json file 17:26
You can try out passing identity as a git repo and see what it does , I am not however sure that git scm is a valid zef identity 17:27
timo yeah i only want to clone the repo, only the latest - or specified - version that was released does not help me at all for what i want to do 17:29
melezhik. I just checked zef docs , so identity could be an scm repo , so you could do this “my $state = task-run ‘fetch thing’, ‘zef-fetch’, %( identity => ‘module git repo’); say $state<directory>;” 17:32
Does what you need to do 17:33
But you need to know scm repo
Or actually just - git clone repo , I dunno 🤷)) 17:34
17:35 dakkar left
timo yeah if i already have the scm url i don't need to do anything with zef. except the whole point is i don't want to find or type out the repo url, i want to have only the short-name of the distro and get a clone in a predictable place 17:37
i want to "hack-on Zef" and it would do something like `mkdir -p ~/raku/ecosystem/ugexe/github/zef/`, git clone zef in there, and optionally cd me into it 17:38
17:41 silug left 17:42 silug joined
ugexe i usually do `zef look Foo::bar` although that isn't quite what you asked for since it will download tar.gz files and not put it in a predicable place (it goes in some temp dir i think) 17:44
you can do e.g. `zef browse zef source --/open` but that only works if they link the repo url in the support.source field of the metadata
(`zef browse zef source --/open` would output the repo to fetch to be clear - you'd still need to pipe it to git to actually fetch) 17:45
also sorry i didnt look back far enough to see you already mentioned zef look
timo right 17:46
ugexe i think `zef browse zef source --/open` fits the job, but most people probably dont fill out that field
you can get rid of `--/open` and it'll open a browser window to the repo 17:47
timo in the case of JSON::Fast, zef browse JSON::Fast source --/open will give 'browse' urls supported by JSON::Fast: source because the url is a git:// and therefore the check for http or https fails and zef considers it "not what you want"
is Zef::Client meant to be easy to use in a custom script or one-liner? what I ended up with now looks like `use Zef::Client; use Zef::Config; my $confpath = Zef::Config::guess-path; my $conf = Zef::Config::parse-file($confpath); my $c = Zef::Client.new(config => $conf); $c.search(...)` which is a little bit wordy and maybe the guess-path + parse-file case could get a shortcut somehow 17:48
ugexe i guess github.com/ugexe/zef/blob/080304e1...#L900-L903 should also not fire if --/open is specified 17:50
timo i could imagine a `zef script` with optional `--repl` that pre-initialises a Zef::Client with all the bells and whistles from the commandline arguments that zef has
or alternatively a `use Zef::Client::DWIM;`
but i have no idea if anyone else has needs to script with zef, so it could be a waste of time, too
ugexe there needs to be a real Zef::Configuration class that contains the configuration and works with Zef::CLI and MAIN param config options and ENV options 17:55
but yeah ideally Zef::Client would require less verbosity to use without providing a DWIM class that isnt otherwise used by any of the other code in Zef 17:56
18:01 dawids_ joined, dawids_ left 18:04 apac left
timo right, if it's not used by Zef itself, it is likely to bit-rot without anybody noticing. test cases can only do so much if nobody shows up to write down all the implicit assumptions 18:07
18:09 apac joined 18:16 apac left 18:36 abraxxa-home joined 18:39 abraxxa-home left 18:41 sena_kun joined 18:47 jpn left 19:48 Aedil left 20:00 apac joined, nil78 left 20:02 nil78 joined 20:14 topnep left 20:15 topnep joined
wayland76 librasteve: Interesting! deepmap looks useful, but I'm really looking for a deepgrep. 20:33
timo you can use gather/take for that if you like 20:57
m: my @in = [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]]]; dd deepmap-with-if => @in.deepmap({ $_ if .is-prime }), deepmap-with-gather-take => (do gather @in.deepmap({ take $_ if .is-prime })).list; 20:59
camelia :deepmap-with-gather-take((2, 3, 5, 7, 11))
:deepmap-with-if([[[2, 3], [5]], [[7], [11]]])
timo depends on what you want, gather/take will give you a flat result, deepmap with if will keep the structure
ah i see librasteve already showed how Empty can do that 21:00
wayland76 Nice! I'm after the flat structure. Thanks! 21:01
timo i've never actually used ** aka HyperWhatever before, but i did not expect this: 21:03
m: dd [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]]][**]
camelia (1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12).Seq
librasteve .oO
timo but what i did expect, after seeing that, was for postcircumfix:<[]> with ** would also allow :kv and :p and friends
librasteve m: [[[1,2,3],[4,5,6]],[[7,8,9],[10,11,12]]].flat(:hammer).say 21:05
evalable6 (1 2 3 4 5 6 7 8 9 10 11 12)
Raku eval ([[1 2 3] [4 5 6]] [[7 8 9] [10 11 12]])
timo right, :hammer is also relatively new AFAIK 21:06
librasteve yep - but I wonder if it plays nice with :kv | :p 21:07
timo not sure flat is actually a place i'd expect those adverbs to apply 21:09
librasteve not sure I understand what you meant with HyperWhatever playing nice with kv | p 21:10
guess I need an example
timo well, for the tree-ified numbers between 1 and 12 i was hoping for something like `(0,0,0) => 1, (0,0,1) => 2, (0,0,2) => 3, (0,1,0) => 4, ...` 21:11
21:16 silug left
librasteve well - can't help on that - but tx for introducing me to HyperWhatever ;-) 21:16
wayland76 I have a question. I'm using the XML module by lizmat, and it says "Unless you are doing something that requires direct access of the @.nodes property, it's probably easier (and less noisy) to use the array access syntax.". However, at some point (when passing to a function), I get the error "Type check failed in binding to parameter '@inputs'; expected Positional but got XML::Element ((my \XML::Element_44...)"
timo it really feels like we should have an ecosystem module with an implementation of what i just described 21:18
wayland76: that sounds like passing a single element to a constructor's argument that would want an array (or similar)
21:19 silug joined
timo what module is that exactly? i don't see one by liz in the ecosystems? 21:21
wayland76 Sorry, it's a community module and GitHub has her name on it.
raku.land/zef:raku-community-modules/XML
github.com/raku-community-modules/...nt.rakumod 21:22
timo ah right, that's the last commit that changed the file
i think what that message (comment?) you pasted is refering to is that you would use $my-element[3] for getting a node's fourth child node 21:24
wayland76 timo: agreed. However, I have some code that's testing for that, and I've been using $item ~~ Positional, but now I'm going to have to start testing for .can('AT-POS') or whatever. I'm of the opinion that XML::Element should also be marked "does Positional does Associative". 21:26
timo oh, yes it makes sense that if it has these methods it should also do that role 21:31
librasteve since a community module, maybe a PR would help? 21:35
21:35 apac left
wayland76 librasteve: Agreed; I hope to get to it, but for now, I've made an issue instead. 21:36
librasteve ++ 21:38
also a lot of raku is kinda stubs for more work ... I would love to see clean and simple primitives for tree walking in a module that could ultimately become part of the core 21:40
antononcube I would love to see gcd on Rat’s. 🙂 21:47
Doing that later today… 21:48
librasteve diy
dont forget the gaussian complex no's
wayland76 Regarding a tree module, likewise. 21:49
If I get this done, it might be a step in the right direction; an inspiration/basis for the core tree-walking modules. It seems achievable at the moment, if I don't run into too many more bugs. 22:00
Anyway, off to work. Good $time-of-day to you all :)
22:05 wayland76 left
antononcube @librasteve I implemented the GCD for Gaussian integers already. It is needed to factorize Gaussian integers, (also implemented, now.) 22:16
22:19 topnep left
timo randomly responded to two of the XML github issues 22:19
22:20 topnep joined
antononcube It turns out that Perl has a comprehensive Number theory package. And -- surprise, surprise -- that Perl package follows and mentions Mathematica a lot and often. 22:29
I referring to "Math::Prime::Util::GMP". 22:30
22:32 jpn joined
timo here's a question / concern / bike shedding oportunity about a page in the docs: github.com/Raku/doc/pull/4555#issu...2669915588 would be happy for some input 22:36
22:36 silug left, silug joined 22:37 jpn left, donaldh left 23:53 sena_kun 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!