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This channel is intended for people just starting with the Raku Programming Language (raku.org). Logs are available at irclogs.raku.org/raku-beginner/live.html Set by lizmat on 8 June 2022. |
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| ab5tract | “Follow your curiosities” Trial and error can lead to really interesting learnings | 02:46 | |
| Also: welcome! | 02:47 | ||
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| librasteve | mr_nice_guy: abandon hope all yea who enter here | 07:51 | |
| lizmat | And yet another Rakudo Weekly News hits the Net: rakudoweekly.blog/2025/06/16/2025-...-codified/ | 12:53 | |
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| habere-et-disper | can you unshape an array while keeping it's nested structure ? | 17:22 | |
| lizmat | how many dimensions ? | 17:24 | |
| habere-et-disper | 2 | ||
| m: my @foo[2;2] = [[1,2],[3,4]]; | |||
| camelia | ( no output ) | ||
| habere-et-disper | i was doing `@foo.rotor(@foo.shape.tail)` which seems a mouthful | 17:26 | |
| timo | m: my @foo[2;2;1] = [[[11],[12]],[[21],[22]]]; my @new; for @foo.pairs { say .raku; @new.ASSIGN-POS(|.key, .value) }; say @new.raku # /cc habere-et-disper | 17:38 | |
| camelia | (0, 0, 0) => 11 (0, 1, 0) => 12 (1, 0, 0) => 21 (1, 1, 0) => 22 [[[11], [12]], [[21], [22]]] |
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| timo | i wasn't sure how exactly to get the same behaviour that ASSIGN-POS has out of postcircumfix:<[ ]> | ||
| habere-et-disper | thanks timo. hmm, that seems even more of a dance. | 17:40 | |
| timo | yeah, a little bit. i was also slightly surprised that there's no trivial way to get an equivalent nested array out of a shaped array (though there may be one that i'm just not seeing) | 17:41 | |
| though i do think there was some design decision that shaped arrays could just be treated as a linear array of values for some purposes | |||
| lizmat | m: my @foo[2;2] = [[1,2],[3,4]]; dd @foo; .say for @foo | 17:54 | |
| camelia | Array.new(:shape(2, 2), [1, 2], [3, 4]) 1 2 3 4 |
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| lizmat | iterating over a shaped array will produce all values in turn | ||
| m: my @a[2;2] = [[1,2],[3,4]]; my @b = @a.batch(2); dd @b | 17:56 | ||
| camelia | [(1, 2), (3, 4)] | ||
| lizmat | m: my @a[2;2] = [[1,2],[3,4]]; my @b = @a.batch(2)>>.Array; dd @b | 17:57 | |
| camelia | [[1, 2], [3, 4]] | ||
| timo | batch will not help easily with a three-dimensional (or more) shaped array though | 18:12 | |
| lizmat | indeed, but the question was for 2 dim arrays | ||
| timo | right | ||
| lizmat | wonder whether Math::Matrix has a solution for it | 18:13 | |
| timo | it would probably be the best spot to look yeah | 18:14 | |
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