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🦋 Welcome to the former MAIN() IRC channel of the Raku Programming Language (raku.org). This channel has moved to Libera (irc.libera.chat #raku) Set by lizmat on 23 May 2021. |
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| canw | How to read password from keyword not displaying it in Raku? | 03:04 | |
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| Util | m:say <1 1.1 1.10 2 2.1 2.3 2.30>.sort({ .comb(/\d+/)».Int }); | 03:55 | |
| m: say <1 1.1 1.10 2 2.1 2.3 2.30>.sort({ .comb(/\d+/)».Int }); | 03:56 | ||
| camelia | (1 1.1 1.10 2 2.1 2.3 2.30) | ||
| Util | tbrowder: Is this what you wanted? ^^^ | ||
| It is from rosettacode.org/wiki/Sort_a_list_of...fiers#Raku (which can have multiple dots), | 03:57 | ||
| and works because when Raku compares two lists, it compares first elements, then goes to 2nd elements only if 1st were a tie, etc. | |||
| So, making Numerics into lists of 1 or 2 elements (depending on pure-Int vs has-a-frac-part) works, | |||
| provided we turn all the .comb'ed bits back into numbers with hyper .Int. | |||
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| mykhal | Util: nice. also behaves the same like version sort for debatable cases like -2, 1.04 | 07:25 | |
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| MasterDuke | canw: you'll have to use something like modules.raku.org/dist/Terminal::Re...ub:titsuki or modules.raku.org/dist/Terminal::Ge...an:TITSUKI | 07:30 | |
| tellable6 | MasterDuke, I'll pass your message to canw | ||
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| mykhal | moon-child: ok, these :$_ 's are mentioned at least in docs.raku.org/language/operators#term_{_} , not very explicit though | 07:56 | |
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| raydiak | pair forms (including :$) are also covered or mentioned in docs.raku.org/type/Pair docs.raku.org/language/syntax#Adve...lon_pairs) docs.raku.org/language/glossary#Co...colon_list docs.raku.org/language/glossary#Adverbial_pair docs.raku.org/type/Signature#Posit..._arguments and docs.raku.org/type/Capture | 08:47 | |
| mykhal | raydiak: tanks. i was adressing special case with $_ , where i feel _ is not supposed to me exactly "name" | 08:51 | |
| .. s/me/be/ | 08:52 | ||
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| raydiak | gotcha. it's just another variable, works the same way as usual :$whatever | 08:52 | |
| mykhal | m: say :$ # .. i have spotted even standalone $ | 08:56 | |
| camelia | 5===SORRY!5=== Argument to "say" seems to be malformed at <tmp>:1 ------> 3say7⏏5 :$ # .. i have spotted even standalone Confused at <tmp>:1 ------> 3say :$7⏏5 # .. i have spotted even standalone $ expecting any of:… |
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| mykhal | m: say :($) | ||
| camelia | ($) | ||
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| raydiak | that's a placeholder. it truly has no name | 08:57 | |
| lizmat | it's also the nameless state variable | ||
| m: sub a() { say $++ }; a for ^10 | 08:58 | ||
| camelia | 0 1 2 3 4 5 6 7 8 9 |
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| raydiak | that's cool, I didn't know that worked | 08:59 | |
| I've written (state $)++ to do that in the past | 09:02 | ||
| mykhal | m: say ( ++$ for ^5 ) | ||
| camelia | (1 2 3 4 5) | ||
| mykhal | m: say ( -$ for ^5 ) | ||
| camelia | Use of uninitialized value of type Any in numeric context (0 0 0 0 0) in block at <tmp> line 1 Use of uninitialized value of type Any in numeric context in block at <tmp> line 1 Use of uninitialized value of type Any in numeric context… |
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| raydiak | m: say $ += $++ for ^5 # triangular numbers | 09:13 | |
| camelia | 0 1 3 6 10 |
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| raydiak | kinda fun, even if it is a bit illegible | 09:14 | |
| Altreus | I just discovered that sort is sort-by if the sub has chirality of 1 | 09:15 | |
| Signatures make so much magic possible! | 09:16 | ||
| mykhal | m: say ( !$ for ^2 ) # ?? | ||
| camelia | (True True) | ||
| Altreus | oh I missed that someone actually exemplified it in here so actually I didn't need to discover it | 09:17 | |
| mykhal | Altreus: i wonder what chitality means in this non-geometry, non-physics, non-chemistry context ... | ||
| moon-child | arity, probably | ||
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| mykhal | :) | 09:17 | |
| Altreus | arity yes | 09:21 | |
| I knew it was one of those | |||
| chirality ... arity ... charity ... something like that | |||
| Anyway, a language that easily supports different options for the same procedure really speaks to me after more than a decade of perl5 | 09:22 | ||
| mykhal | Altreus: ok, i now get that you were probably referring to Util's sort post | 09:32 | |
| (with unwanted language associations) | 09:33 | ||
| m: say !(Any) | 09:37 | ||
| camelia | True | ||
| mykhal | m: say +(Any) | ||
| camelia | Use of uninitialized value of type Any in numeric context 0 in block <unit> at <tmp> line 1 |
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| mykhal | m: say +() | 09:51 | |
| camelia | 0 | ||
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| Altreus | a sort post? | 10:18 | |
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| mykhal | Altreus: a post on sorting, or, just a post (or multiple consecutive ones), there are no other posts of him/her in a couple of days | 10:25 | |
| m: say (0+0, [+], 0 gcd 0) | 10:27 | ||
| camelia | (0 0 0) | ||
| mykhal | m: say ( [gcd], ) | ||
| camelia | No zero-arg meaning for infix:<gcd> in block <unit> at <tmp> line 1 |
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| Altreus | I was referring to the discussion in which you pointed out we were sorting things like version numbers | 10:29 | |
| i.e. you can just pass *.Version to sort and it will DTRT | 10:30 | ||
| probably some sort of schwartzian thing | 10:31 | ||
| MasterDuke | yeah, it'll do a schwartzian transform for that case | ||
| mykhal | Altreus: ah, ok. but there, variadicity is no as obvious as in Util's .sort({ .comb/\d+/>>.Int }) | 10:33 | |
| .. plus parens around regexp | 10:34 | ||
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| melezhik | . | 14:20 | |
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| Altreus | ; | 14:49 | |
| mykhal | m: say <,> | 15:04 | |
| camelia | , | ||
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| mykhal | m: say { $_ ?? &?BLOCK($_-1) * $_ !! 1 }(10) | 16:03 | |
| camelia | 3628800 | ||
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| mykhal | fignting with Match object, getting an excessive space somehow, minimal example: | 18:56 | |
| say: "x12x3".subst(:g, /['x'(\d+)]+/, { $/.caps>>.value }) | |||
| m: say "x12x3".subst(:g, /['x'(\d+)]+/, { $/.caps>>.value }).raku | |||
| camelia | "12 3" | ||
| mykhal | .. i need that [...]+ s better example would be this (and expected result is "0zzz123" : | 19:00 | |
| m: say "x0zzzx12x3".subst(:g, /['x'(\d+)]+/, { $/.caps.grep(*.key == 0)>>.value }).raku | 19:01 | ||
| camelia | "0zzz12 3" | ||
| mykhal | this Match object is somewhat chunky | 19:02 | |
| moon-child | m: say S:g/'x' (\d+)/$0/ given 'x0zzzx12x3' | 19:04 | |
| camelia | 0zzz123 | ||
| mykhal | nice, however I want to beat this { $/ } code solution | 19:05 | |
| moritz | don't use the outer + in your subsitution regex | ||
| moon-child | mykhal: then | 19:06 | |
| say "x0zzzx12x3".subst(:g, /['x'(\d+)]+/, { $/.caps.grep(*.key == 0)>>.value.join }).raku | |||
| moritz | the problem is that that $/.caps>>.value returns a list of two values, because the + made it match twice | ||
| moon-child | m: say "x0zzzx12x3".subst(:g, /['x'(\d+)]+/, { $/.caps.grep(*.key == 0)>>.value.join }).raku | ||
| camelia | "0zzz123" | ||
| moritz | and subst wants a string, so it joins the two values, which defaults to inserting a space | ||
| m: say ~<a bc> | |||
| camelia | a bc | ||
| moritz | or you can use $/.caps>>.value.join('') | 19:07 | |
| that should also get rid of that space | |||
| moon-child | no need for (''), can just use .join as in my example above | 19:08 | |
| moritz | aye, but it makes the difference less obvious | ||
| moon-child | ne, fair enough | ||
| mykhal | moon-child, moon-child : thanks, i was panicking of seeing miltiple "0" keys in hash | 19:11 | |
| during debugging | |||
| or maybe in list of pairs | 19:12 | ||
| i think i will continue using perl -pe / -ne for quick text filtering and processing, for some time :) | 19:16 | ||
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| moon-child | startup time has gotten better, but is still a reason to prefer perl over raku for those sorts of pipelines | 19:22 | |
| e.g. over 100 runs I get perl -e exit is 66x faster than raku -e exit | |||
| mykhal | did you try jvm instead of m ? :) | 19:24 | |
| moon-child | no | 19:27 | |
| I don't even build jvm rakudo anymore; it takes forever to build and doesn't work properly | |||
| ugexe | i built it on a raspberry pi 2 running net-bsd like 8 years ago... it took like 4 days | 19:29 | |
| mykhal | but perl then might be even 666x faster | ||
| i tries on js, but failed, and it's not even listed in raku.org/compilers | 19:31 | ||
| moon-child | yeah js requires a really old version of node | 19:33 | |
| mykhal | moon-child, moritz: reason for such complicated regex was, taht I was "hot-fixing" note entirely correct Rosettacode URL decoding example. It's already added as improved variant. rosettacode.org/wiki/URL_decoding#Raku | 19:55 | |
| i guess it can be yet simpler | 19:56 | ||
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| moon-child | that red code snippet seems somewhat suspect | 20:31 | |
| I might as easily say 'use URI::Encode; uri_decode whatever' | |||
| mykhal | you mean red $url string? these are from test cases at page top | 20:33 | |
| but agree, for comparison, that Red (lang) example below is too short. | 20:35 | ||
| i saw it forst time while ago and saw it's wrong for multibyte char. | 20:36 | ||
| moon-child: oh you meant Red :) | 21:06 | ||
| moon-child | yes | 21:07 | |
| mykhal | well, not only Raku has strangely named functions (like take for yield), here Red has dehex which does nothing with "deadbeef", but un-urlquotes | 21:10 | |
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| japhb | Naming is hard, let's do quantum physics instead. | 21:14 | |
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| mykhal | m: say "".^method_names.grep: /hex/ | 21:15 | |
| camelia | () | ||
| moritz | m: say 255.base(16) | 21:16 | |
| camelia | FF | ||
| moritz | m: say :16('FF') | ||
| camelia | 255 | ||
| moon-child | gather/take is from mathematica | ||
| moritz | somehow I am reminded of a quote in one of my favorite books, "Those that yield are not always weak" | 21:17 | |
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| moon-child | (or, at least, it also appears in mathematica. I don't know if that's where it originates, nor if it's where raku got the names) | 21:17 | |
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| mykhal | so Raku is not always weak as well, can yield too according to doc, I meant Python's yield | 21:24 | |
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| mykhal | moon-child: i meat hex as in (un)hexlify, i see it can be dobe with experimental pack | 21:39 | |
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| mykhal | m: use experimental :pack; say pack("H*", "01cafe").contents | 21:47 | |
| camelia | (1 202 254) | ||
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| mykhal | m: say "01cafe".comb(2)>>.parse-base(16) | 21:58 | |
| camelia | (1 202 254) | ||
| moon-child | m: say 5.base('camel') | 22:01 | |
| camelia | 🐫🐪🐫 | ||
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| mykhal | nice eggs | 22:19 | |
| m: say 4.base("beer") | 22:22 | ||
| camelia | 🍻🍺🍺 | ||
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| codesections | . | 22:40 | |
| tellable6 | 2021-06-27T01:32:36Z #raku <avuserow> codesections yeah, that only tends to be an issue when I'm subscripting without an intermediate variable, like `for %a<b>.keys {}` vs `my %b := %a<b>; for %b.keys {}` | ||
| mykhal | moon-child: but i will need some emo terminal, changing from urxvt to termite isn't enough to see these (had to map uninames or copy to firefox data:text/html,<html contenteditable> ) | 22:50 | |
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