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🦋 Welcome to Raku! raku.org/ | evalbot usage: 'p6: say 3;' or /msg camelia p6: ... | irclog: colabti.org/irclogger/irclogger_log/raku Set by ChanServ on 14 October 2019. |
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| EuAndreh[m] | How can I add a tuple type as a return value? See: euandre.org/pastebin/raku-tuple-ty...ation.html | 01:03 | |
| vrurg | EuAndreh[m]: Use List or modules.raku.org/dist/Tuple:cpan:ELIZABETH | 01:15 | |
| EuAndreh[m]: Depending on how you plan to use the return value, it could be a Pair or Array too. | 01:16 | ||
| EuAndreh[m] | vrurg: I think it's closer to a Pair | 01:17 | |
| Can the Pair be generic on the contents? | |||
| vrurg | EuAndreh[m]: Like? | ||
| EuAndreh[m] | Maybe something like Pair[Str, Str] | ||
| Actually, a Pair contains a key and a value. I'm after a tuple instead | 01:18 | ||
| So probably a List or an Array | 01:19 | ||
| vrurg | Anyway, Pairs are not parameterizable. | ||
| EuAndreh[m] | I guess Lists aren't also, right? | 01:20 | |
| vrurg | You're right. | ||
| EuAndreh[m] | vrurg: Thank you very much :) | ||
| vrurg | EuAndreh[m]: you're welcome. :) | 01:21 | |
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| cpan-raku | New module released to CPAN! Red (0.1.1) by 03FCO | 02:21 | |
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| xinming_ | SmokeMachine: Still trying, busy with other things in life, If I have time, I'll do it, and whenever I have time, I'll trouble you. | 04:59 | |
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| xinming_ | What is the difference between categorize and classify in List class? I feel they are the same. | 05:38 | |
| even the example, there is one example behave the same. | 05:39 | ||
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| Geth_ | doc: 24dd9ebf99 | (Stoned Elipot)++ | assets/sass/style.scss Be more specific in selecting href to "external" sites ...and thus avoid selecting the "internal" link to language/operators#infix_// as seen in doc/Language/typesystem.pod6 |
06:30 | |
| doc: 20b84e83cd | (Juan Julián Merelo Guervós)++ (committed using GitHub Web editor) | assets/sass/style.scss Merge pull request #3135 from stoned/fix-external-url-selector Be more specific in selecting href to "external" sites |
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| sarna | hey, can I somehow get more info from a test that failed? like, expected x, got y? | 09:02 | |
| I'm using `mi6 test` and when something fails I just get "test x failed" :/ | 09:06 | ||
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| ToddAndMargo | Hi All. I am trying ot code a Native call to a C functions that uses a "LPTSTR". How do I declare that? Something like `constant DWORD := int32; ` but for LPTSTR? | 09:12 | |
| lizmat | sarna: raku -Ilib t/foo.t | 09:16 | |
| ToddAndMargo | if it helps, I found this description: "LPTSTR is a [long] pointer to a (non-const) TCHAR string" | 09:17 | |
| and "LPTSTR: null-terminated string of TCHAR (Long Pointer)" | 09:19 | ||
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| sarna | lizmat: that doesn't give me any more info than "test x failed on line y" | 09:26 | |
| lizmat | well, then maybe the test is a bit wonky? Like being an "ok" or a "flunk" ? | 09:27 | |
| what does the test say on that line ? | |||
| sarna | it's an "ok" test | ||
| which one would give me more info? | |||
| lizmat | is-deeply ? | 09:28 | |
| is ? | |||
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| lizmat | m: use Test; is "foo", "bar" | 09:29 | |
| camelia | not ok 1 - # Failed test at <tmp> line 1 # expected: 'bar' # got: 'foo' |
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| lizmat | m: use Test; is-deeply "foo", 42 | ||
| camelia | not ok 1 - # Failed test at <tmp> line 1 # expected: 42 # got: "foo" |
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| sarna | that works, thanks lizmat :) | ||
| lizmat | afk for a few hours& | 09:32 | |
| PSA: there will ne *no* Rakudo Weekly this week, the next one will be on 6 January 2020 | |||
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| sarna | m: enum Foo<Bar Baz>; Foo(Nil or 0) | 09:54 | |
| camelia | 5===SORRY!5=== Error while compiling <tmp> Unable to parse expression in argument list; couldn't find final ')' (corresponding starter was at line 1) at <tmp>:1 ------> 3enum Foo<Bar Baz>; Foo(Nil7⏏5 or 0) expecting any of: … |
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| sarna | m: enum Foo<Bar Baz>; Foo((Nil or 0)) | ||
| camelia | ( no output ) | ||
| sarna | why do I need extra parens here? :D | ||
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| moritz | m: enum Foo<Bar Baz>; say Foo( 0 ) | 11:16 | |
| camelia | Bar | ||
| moritz | m: enum Foo<Bar Baz>; say Foo( Nil or 0 ) | ||
| camelia | 5===SORRY!5=== Error while compiling <tmp> Unable to parse expression in argument list; couldn't find final ')' (corresponding starter was at line 1) at <tmp>:1 ------> 3enum Foo<Bar Baz>; say Foo( Nil7⏏5 or 0 ) expecting any of:… |
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| moritz | m: enum Foo<Bar Baz>; say Foo( 0 or 0 ) | ||
| camelia | 5===SORRY!5=== Error while compiling <tmp> Unable to parse expression in argument list; couldn't find final ')' (corresponding starter was at line 1) at <tmp>:1 ------> 3enum Foo<Bar Baz>; say Foo( 07⏏5 or 0 ) expecting any of:… |
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| moritz | looks like a bug to me | ||
| it seems to be stopping at the wrong precedence level here | 11:17 | ||
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| sarna | how to turn an array of chars into an array of numbers? I tried this, but it didn't work | 11:37 | |
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| sarna | m: for "1234".comb { Int($_) } | 11:38 | |
| camelia | ( no output ) | ||
| sarna | oh lol it works | ||
| m: my @foo = do for "1234".comb { Int($_) }; dd @foo[0] | 11:39 | ||
| camelia | Int @foo = 1 | ||
| moritz | m: say "1234".comb.map(+*) | 11:40 | |
| camelia | (1 2 3 4) | ||
| moritz | m: say "1234".comb>>.Int | ||
| camelia | (1 2 3 4) | ||
| sarna | neat! | 11:41 | |
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| sarna | what does that mean: `expected Positional[Int] but got Array ($[1, 2, 3])`? isn't Array positional? | 12:38 | |
| m: sub foo(Int:D @arg) { } ; foo([1;2;3]) | 12:39 | ||
| camelia | Type check failed in binding to parameter '@arg'; expected Positional[Int] but got Array ($[1, 2, 3]) in sub foo at <tmp> line 1 in block <unit> at <tmp> line 1 |
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| tbrowder | hi, all | 12:42 | |
| tellable6 | 2019-12-26T19:03:19Z #raku <jmerelo> tbrowder what about simply raku-advent-calendar.org for a domain? | ||
| 2019-12-26T19:09:49Z #raku <lizmat> tbrowder perhaps raku-advent-calendar.blog ? | |||
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| tbrowder | the choices i gave are what was offered free, i assume anything else would cost more but i don't know. i'll check when i get a chance... | 12:44 | |
| ref modules: i want to add to a module a test that requires a debian package. is there any clever way to skip the test if it's not available? | 12:48 | ||
| the meta6 would actually list a module that requires the uuid-dev library | 12:49 | ||
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| tbrowder | that module is LibUUID | 12:50 | |
| Doc_Holliwood | Cow-orker: Hey, you, what are you up to? Me: I'm looking for whatever. Cow-orker: Ok, ok. No need to be snarky. | ||
| m: .say for (2..50).grep: is-prime(*) | 12:52 | ||
| camelia | No such method 'is-prime' for invocant of type 'Whatever' in block <unit> at <tmp> line 1 |
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| Doc_Holliwood | Why doesn't this work? | ||
| Or rather, why doesn't it dwim? | |||
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| Doc_Holliwood | m: .say for (2..50).grep: is-prime(* + 0) | 12:54 | |
| camelia | No such method 'is-prime' for invocant of type 'WhateverCode' in block <unit> at <tmp> line 1 |
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| Doc_Holliwood | m: .say for (2..50).grep: is-prime((* + 0)()) | ||
| camelia | Too few positionals passed; expected 1 argument but got 0 in block <unit> at <tmp> line 1 |
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| SmokeMachine | m: sub foo(Int:D @arg) { } ; foo([1,2,3]) | 13:06 | |
| camelia | Type check failed in binding to parameter '@arg'; expected Positional[Int] but got Array ($[1, 2, 3]) in sub foo at <tmp> line 1 in block <unit> at <tmp> line 1 |
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| SmokeMachine | m: sub foo(Int:D @arg) { } ; foo(Array[Int].new: [1,2,3]) | 13:06 | |
| camelia | ( no output ) | ||
| SmokeMachine | m: sub foo(@arg where .all ~~ Int:D) { } ; foo([1,2,3]) | 13:07 | |
| camelia | ( no output ) | ||
| lizmat | m: .say for (2..50).grep: *.is-prime # Doc_Holliwood | ||
| camelia | 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 |
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| SmokeMachine | sarna: ^^ | ||
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| sarna | thanks SmokeMachine :) | 13:08 | |
| SmokeMachine | sarna: `Int @array` is different from a array with every element being an int... | 13:10 | |
| Doc_Holliwood | lizmat: that's what i get for simplyfying :P Here's what I originally wanted to do: | 13:11 | |
| SmokeMachine | m: say [1, 2, 3] ~~ Positional[Int]; say Array[Int].new([1, 2, 3]) ~~ Positional[Int] | ||
| camelia | False True |
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| Doc_Holliwood | m: use Prime::Factor; .say for (2..50).grep: is-prime( prime-factors(*).elems ); | 13:13 | |
| camelia | ===SORRY!=== Could not find Prime::Factor at line 1 in: inst#/home/camelia/.perl6 inst#/home/camelia/rakudo-m-inst-1/share/perl6/site inst#/home/camelia/rakudo-m-inst-1/share/perl6/vendor inst#/home/camelia/rakudo-m-inst-1/sh… |
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| SmokeMachine | m: subset ArrayOfInts of Positional where .all ~~ Int:D; say [1, 2, 3] ~~ ArrayOfInts | ||
| camelia | True | ||
| sarna | SmokeMachine: wait, what | 13:14 | |
| D: heck | |||
| SmokeMachine | sarna: what? | 13:15 | |
| sarna | SmokeMachine: what is `Int @array` then? | ||
| isn't it "a thing that does positional and has Ints inside"? | |||
| SmokeMachine | sarna: `Int @array` is equivalent of `Array[Int]` | 13:16 | |
| Doc_Holliwood | it is. but a plain [1,2] isn't an array of Ints | ||
| sarna | what's [1,2] then? | ||
| Doc_Holliwood | it could contain anything. the subset above is a runtime check for any array | ||
| SmokeMachine | sarna: no, it's a defined type... so, to set a value for that, that value should have that type.. | ||
| m: [1,2].^name.say | 13:17 | ||
| camelia | Array | ||
| SmokeMachine | m: Array[Int].new([1,2]).^name.say | ||
| camelia | Array[Int] | ||
| SmokeMachine | sarna: ^^ | ||
| sarna | oh, that's because I can append values of any type to that literal, right? | 13:18 | |
| Doc_Holliwood | right. | ||
| sarna | thanks for explaining, I got it now | ||
| SmokeMachine | m: my Int @a; @a.push: 1; @a.push: "a" | 13:19 | |
| camelia | Type check failed in assignment to @a; expected Int but got Str ("a") in block <unit> at <tmp> line 1 |
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| SmokeMachine | m: my @a where .all ~~ Int; @a.push: 1; @a.push: "a" | 13:19 | |
| camelia | Type check failed in assignment to @a; expected <anon> but got Str ("a") in block <unit> at <tmp> line 1 |
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| sarna | that's funny: | 13:21 | |
| m: my @a where .any ~~ Int; @a.push: 1; @a.push: "a" | |||
| camelia | Type check failed in assignment to @a; expected <anon> but got Str ("a") in block <unit> at <tmp> line 1 |
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| SmokeMachine | m: my @a where { .all ~~ Int || fail "Please just give me Ints" }; @a.push: 1; @a.push: "a" | 13:24 | |
| camelia | Please just give me Ints in block <unit> at <tmp> line 1 |
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| Xliff | . | 15:05 | |
| sena_kun: You around? | 15:06 | ||
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| elmo40 | hrmm... interesting | 15:17 | |
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| Tirifto | Hello! Is there a way to create an empty (path-less) IO::Path object, or is it a much better idea to avoid the kind of situation where I would need to do that in the first place? | 16:06 | |
| AlexDaniel | Tirifto: what about a type object? | 16:08 | |
| m: say IO::Path | |||
| camelia | (Path) | ||
| AlexDaniel | but yes, I'm intersted to know why you need this | ||
| intersted* uhh sloppy fingers :) | |||
| heh I did it again :D | |||
| Tirifto | AlexDaniel: I'm writing a script to assemble webpages for me. It has a class for data of the pages it's going to export (one object per page), with one datum being the path the page's content should be written to. At one point in the script, it's known that a new page will be exported, but the data of the page is yet to be provided (piece by piece). My first idea was to create the page object with all of its attributes empty, and fill them | 16:20 | |
| in as the data are read. In keeping with this, I could just give it any arbitrary path, since the datum's going to get overwritten anyways, but some more obviously default/temporary value would feel more proper. :P | |||
| AlexDaniel | Tirifto: yeah sounds like you just need a type object | 16:21 | |
| m: my IO::Path $x; dd $x | |||
| camelia | Path $x = IO::Path | ||
| AlexDaniel | m: my IO::Path $x; dd $x; $x = ‘foo’.IO; dd $x | ||
| camelia | Path $x = IO::Path Path $x = IO::Path.new("foo", :SPEC(IO::Spec::Unix), :CWD("/home/camelia")) |
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| Tirifto | AlexDaniel: Aha, neat! So type objects fit in their types? | 16:22 | |
| AlexDaniel | Tirifto: yeah, constraints are :U by default, you can use :D if you wanted to forbid that | 16:23 | |
| m: my IO::Path:D $x = IO::Path | 16:24 | ||
| camelia | Type check failed in assignment to $x; expected IO::Path:D but got IO::Path (IO::Path) (perhaps Nil was assigned to a :D which had no default?) in block <unit> at <tmp> line 1 |
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| AlexDaniel | m: my IO::Path:D $x = ‘foo’.IO | ||
| camelia | ( no output ) | ||
| Tirifto | :D | ||
| Actually, :U | 16:25 | ||
| Thank you, AlexDaniel, that solved the problem! I can move on to the next one. :) | 16:30 | ||
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| Geth_ | doc: d22976f450 | (Stoned Elipot)++ | doc/Language/typesystem.pod6 Fix link to sub-signatures |
17:02 | |
| lizmat | www.reddit.com/r/rakulang/comments..._a_string/ | 17:43 | |
| takers? | |||
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| moritz | there was an answer already, I've given a somewhat longer version | 19:12 | |
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| Dasein | How do you properly install Zef? | 21:26 | |
| I've had issues because of being a noob | |||
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| lizmat | 29 seconds is not a lot of time to give you an answer | 21:29 | |
| Tirifto | If my class ‘has @.an-array’, how can I leave it empty upon blessing? | 21:44 | |
| (I've added a custom ‘new’ method, but blessing with the pair ‘an-array => @()’ raised complaints about wrong number of arguments, and declaring a variable as ‘my $an-array = ()’ and blessing with that as ‘:$an-array’ gives me the array [()], which contains one element, when I'd really like zero.) | 21:48 | ||
| Oh, it looks like I don't need to mind all of the attributes in my blessing, and those omitted will be empty? | 21:50 | ||
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| Xliff | . | 21:54 | |
| jnthn | Tirifto: Yes, an @-sigil thing will default to an empty array, so nothing is needed to leave it empty. But the fix would be to use `my @an-array;` and bless with `:@an-array`, or even shorter without the temporary, `:an-array[]`. | 21:57 | |
| Easiest to do nothing at all, of course :) | |||
| Tirifto | Ah, thank you, jnthn! | 22:00 | |
| Makes sense. :) | |||
| Also, does substitution somehow mess with the ‘$_’ variable? I find that ‘$item ~~ s[$ph_title] = .title’ complains about the invocant being of type ‘Str’, even when outside of the line it's not, while ‘my $new = $_; $item ~~ s[$ph_title] = $new.title’ will work just fine. | 22:07 | ||
| (Sorry if I'm overlooking basic information in the documentation; there's (fortunately) a lot to read there!) | 22:09 | ||
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| tobs | Tirifto: it seems that the matchee $item becomes $_ for the duration of s///. (I'm surprised this syntax even does what you meant...) | 22:25 | |
| m: my $a = "far"; my $b = "bar"; given $a { say $b ~~ s['a'] = .uc; say $_ }; say $a; say $b | |||
| camelia | ｢a｣ far far bBARr |
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| tobs | I for one would have excepted the substitution's Match object to be $_ during the substitution, but that apparently only works with the &subst method when it receives a callable, but that's my own confusion, not yours :) | 22:29 | |
| Xliff | m: my $a = "far"; my $b = "bar"; given $a { say $b ~~ s['a'] = $a.uc; say $_ }; say $a; say $b | 22:30 | |
| camelia | ｢a｣ far far bFARr |
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| Tirifto | I like how Raku has kept the sense of wonder and mystery from Perl. :) | 22:31 | |
| Xliff | m: my $a = "far"; my $b = "bar"; given $a { s['a'] = .uc given $b; say $_ }; say $a; say $b | 22:33 | |
| camelia | far far bBARr |
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