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Welcome to the main channel on the development of MoarVM, a virtual machine for NQP and Rakudo (moarvm.org). This channel is being logged for historical purposes. Set by lizmat on 24 May 2021. |
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| MasterDuke | yeah, i did `my $a := ...` also, almost no change in performance | 08:34 | |
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| MasterDuke | complete change of topics, but i think a lot of other languages have added a bitcount/popcount/whatever-you-want-to-call-the-function-that-returns-the-number-of-ones-set-in-the-binary-representation-of-a-number, should raku get one too? | 13:36 | |
| lizmat | MasterDuke: raku.land/zef:lizmat/Bits | 13:41 | |
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| japhb | lizmat: There's some more that would be valuable there ... for example: least significant set bit, most significant set bit. Also, I think there are CPU instructions for some of these when dealing with native types, so that may be what MasterDuke was thinking of. | 18:06 | |
| lizmat | well.... yeah, I just wanted to point out there's an interface for it already :-) | ||
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| japhb | :-) | 18:07 | |
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| MasterDuke | yeah, i would propose a new nqp op. i think jvm/js have builtins for it, and so do libtommath and gmp | 19:08 | |
| btw, any details on possible/planned dates for rakudo core conf? | 19:09 | ||
| lizmat | MasterDuke: maybe we should start with people stating when they can *not* be there at all | 19:12 | |
| MasterDuke | ha. this little thing called covid has been annoying. i hoped that my couple years in the uk would mean a lot more european raku conferences and such, but no such luck. and now we're moving back to the states in july | 19:16 | |
| lizmat | ah... ok, so would June still work for you ? | ||
| or will you already be too busy packing ? | |||
| MasterDuke | maybe i could do a day or two june 12-18, but i wouldn't want to promise anything | 19:17 | |
| and probably a realistic estimate for when i'd be free after the move would be october, what with moving, stuff arriving, moving into the new house, etc | 19:20 | ||
| so i wouldn't recommend planning anything around me | |||
| (also, i'll probably have a lot less time for raku stuff for the next couple months (and then less conveniently time-zoned)) | 19:22 | ||
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| lizmat | MasterDuke :-( but understood | 19:35 | |
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| MasterDuke | i have an annoying number of almost-finished-except-for-a-last-really-annoying-bit PRs, hopefully i can finish up at least one before my time is (even more) reduced | 19:39 | |
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| MasterDuke | interesting. using `@a = ` vs `$a :=` with the binary sha1 op gives a different digest | 21:02 | |
| lizmat | ah? | 21:46 | |
| example? | |||
| MasterDuke | `rakudo-m -e 'use nqp; my int @a = "src/core.c/Int.pm6".IO.slurp(:bin); my $b; my $s = now; $b := nqp::binarysha1(@a) for ^10_000; say now - $s; say $b' gives AA4E6E40AB7A4F867CAE21A18D4A5024C2FBCAD2 | 21:50 | |
| `rakudo-m -e 'use nqp; my $a := "src/core.c/Int.pm6".IO.slurp(:bin); my $b; my $s = now; $b := nqp::binarysha1($a) for ^10_000; say now - $s; say $b'` gives D10659C9C57676112F06DEC45CA5D9FE93805A8B | |||
| `sha1sum src/core.c/Int.pm6` gives fc1db10480cc2f52cb11b22fff807c5db89a3474 | 21:51 | ||
| `rakudo-m -e 'use nqp; my $a := "src/core.c/Int.pm6".IO.slurp; my $b; my $s = now; $b := nqp::sha1($a) for ^10_000; say now - $s; say $b'` gives FC1DB10480CC2F52CB11B22FFF807C5DB89A3474 | |||
| but i'm off to bed, something to investigate later | 21:52 | ||
| lizmat | when you slurp with :bin, any utf-8 in the file, will remain separate bytes, whereas with a string, they're normalized to codepoints ? | ||
| so: they would only be the same if the file would be pure ASCII ? | 21:53 | ||
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