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| Jaguart | A question on Raku foo/style. There are so many ways to do things, it makes Perl feel a little like a straight-jacket 😮 | 08:25 | |
| m: ${ a => 1}.gist | |||
| m: say ${ a => 1}.gist; say ${ a => 1}.raku | 08:26 | ||
| Do you prefer to initialise your hashes using the gist or the raku? and a hint as to why? | 08:27 | ||
| frost | m: a => 1 | 08:29 | |
| camelia | WARNINGS for <tmp>: Useless use of "a => 1" in sink context (line 1) Useless use of constant value a => 1 in sink context (line 1) |
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| frost | m: {a => 1}.say | 08:30 | |
| camelia | {a => 1} | ||
| Jaguart | @frost#6297 - oh yeah - sorry, unnecessary $ sigil, so you prefer ``{ a => 1 }`` over ``{ :a(1) }``? | 08:34 | |
| frost | I prefer a => 1 | ||
| it's more clear | |||
| Jaguart | how about in function-sigs as per ``$o.do-things( $str, :tweak, :unordered )`` where newbie me is assuming that the ``:`` is actually a pair defaulted to boolean-True? | 08:37 | |
| vs ``$o.do-other( $str, tweak=>True, unordered=>True )`` | 08:38 | ||
| frost | I like the shorter one :) | 08:39 | |
| Jaguart | Moving from Perl I actually like the ``:`` pair distinction - less temptation to view ``=>`` as a fat-stringifying-comma. The extra brackets do feel a bit more effort though. | 08:41 | |
| frost | in raku, you can choose the way you like in different places\ | 08:46 | |
| gfldex | m: say ‚123‘ ~~ m:2nd/\d/; | 08:55 | |
| camelia | ï½¢2ï½£ | ||
| gfldex | that is the main reason to have colon pairs in Raku | ||
| The other forms of colon pairs are desired side effects. | 08:56 | ||
| Jaguart | so that's a pair in hiding? ``:2nd(/\d/)`` ?? | 09:00 | |
| gfldex | yes | ||
| Jaguart | 🤯 | 09:01 | |
| gfldex | m: sub infix:<op>(\a, \b, *%_) { say "got pairs: $%_"; }; 1 op 2 :2nd :99problems; | 09:02 | |
| camelia | got pairs: nd 2 problems 99 |
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| Jaguart | wow - I guess that means ``Q:b 'Mind\nBlown'`` is actually a ``:b(True)`` | 09:03 | |
| gfldex .oO(:Raku defaults to True) | 09:06 | ||
| Jaguart | hmmm I dont grok that... ``:2nd`` seems to become ``nd=>2``?? | ||
| Nemokosch | Yes, it does become that | ||
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| If the value is a number, you can use it as a prefix of the key | 09:08 | ||
| So kg => 2 is :2kg in other words | |||
| gfldex | m: sub foo(:$th){ say $th; }; foo :5th, :6th; | 09:09 | |
| camelia | 6 | ||
| gfldex | Please note that there is silent shadowing. | ||
| m: sub foo(:$th){ say $th; }; foo :5th:6th; | 09:11 | ||
| camelia | 6 | ||
| gfldex | Also, the comma is optional. | 09:12 | |
| m: dd :R:a:k:u; | |||
| camelia | :R :a :k :u |
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| frost | m: say :5th:6th | ||
| camelia | |||
| jaguart | what is 'silent shadowing'? | 09:13 | |
| gfldex | m: say (:R:a:k:u).pairs; | ||
| camelia | (0 => R => True 1 => a => True 2 => k => True 3 => u => True) | ||
| gfldex | in :5th:6th th => 6 will discard th => 5. The last one wins. | 09:14 | |
| jaguart | so it's like a hash rather than two pairs | 09:15 | |
| gfldex | yes | ||
| m: say (my method me(){}).signature; | 09:16 | ||
| camelia | (Mu: *%_) | ||
| gfldex | In fact, they end up in a hash for methods. | ||
| jaguart | Wow - I can see a whole new raft of bugs opening up before my eyes... :) | ||
| gfldex | In practice, this seems not to matter. | 09:17 | |
| jaguart | I'm already learning to hate ``%h<<$var>>`` for returning slices - clearly my ``<<>>`` foo is not groked yet | ||
| hmmm - is that showing a default method signture - slurpy hash of Mu? | 09:18 | ||
| gfldex | yes | 09:19 | |
| jaguart | Im still considering two successive pairs with the same name folding into one :o | ||
| gfldex | m: say {;}.signature; (class C {}).^mro.say; | 09:20 | |
| camelia | (;; $_? is raw = OUTER::<$_>) ((C) (Any) (Mu)) |
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| gfldex | Raku is basically an assortment of defaults. :) | ||
| Nemokosch | What is %h<<$var>> | 09:21 | |
| jaguart | ``%h<<$k>>`` works better as ``%h{$k}`` - esp when $k contains spaces - took me an hour to debug that <<$k>> was returning a slice of Any,Any,Any rather than the value I was looking for. | 09:23 | |
| Thank you all - you have raised my Raku - and eyebrows by at least a foot! | 09:24 | ||
| gfldex | m: my %h is default(Nil); my $stuffzs = 1,2,3; dd %h«$stuffzs»; | ||
| camelia | WARNINGS for <tmp>: Useless use of constant integer 3 in sink context (lines 1, 1) Useless use of constant integer 2 in sink context (lines 1, 1) Nil %h{'1'} = Nil |
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| gfldex | m: my %h is default(Nil); my $stuffzs = (1,2,3); dd %h«$stuffzs»; | 09:25 | |
| camelia | (Nil, Nil, Nil) | ||
| gfldex | m: my %h is default(Failure.new('bad‼')); my $stuffzs = (1,2,3); dd %h«$stuffzs»; | ||
| camelia | (Failure.new(exception => X::AdHoc.new(payload => "bad‼"), backtrace => Backtrace.new), Failure.new(exception => X::AdHoc.new(payload => "bad‼"), backtrace => Backtrace.new), Failure.new(exception => X::AdHoc.new(payload => "bad‼"), backtrace =>… | ||
| gfldex | Any is the default default. If that is not useful in your usecase, you are free to change the default. | 09:26 | |
| jaguart | It was more like: | 09:27 | |
| m: my $k='a b c';my %h = ( 'a b c' => 'yeah');say %h<<$k>>;say %h{$k}; | |||
| camelia | ((Any) (Any) (Any)) yeah |
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| jaguart | so more that I was getting a slice of Nil when I was using keys with spaces | 09:28 | |
| oh I like your slice of Failures - nice | 09:29 | ||
| gfldex | Sadly, the stacktrace doesn't point to the right place. | 09:30 | |
| And is default() doesn't take a callable. What I would really like it to take. | 09:31 | ||
| jaguart | :pray: Many thanks for the light. As its nearly bed-time in Australia, I shall dream of butterflies | 09:34 | |
| frost | m: my $l = 'a b c'; say <<$l>> | 09:36 | |
| camelia | (a b c) | ||
| frost | m: my $l = 'a b c'; .say for <<$l>> | ||
| camelia | a b c |
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| gfldex | If you think in functional terms, a lot of stuff makes sense in Raku. | 09:37 | |
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| guifa | jaguart thankfully, few people use %foo«$bar» in practice. Personally (and most I know) tend to still use %foo{$bar}. guillomets are tough for anyone to type if it's not on their keyboard, and actual double < > takes up too much space XD | 15:52 | |
| lizmat | jaguart: version 0.0.9 of Zef::Configuration now supports: zef-configure add-repository tag url --name="Longer name for repo" | 16:46 | |
| jaguart: and also: zef-configure remove-repository tag | |||
| people should now be set to create their own (company) ecosystem to work with Raku | 16:51 | ||
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