| --- Log opened Tue Jan 24 00:00:59 2023 |
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| 02:52 | <&McMartin> | Hmm, you know what |
| 02:52 | <&McMartin> | I think I finally have something I can call a Rust-shaped problem with a straight face |
| 03:04 | <~Vornicus> | man |
| 03:15 | <@celticminstrel> | ??!??!? |
| 03:15 | <@celticminstrel> | How on earth does swapping two unique_ptrs cause the contents an array in both to get wiped…? |
| 03:15 | <@celticminstrel> | ^contents of |
| 03:16 | <&McMartin> | Somebody's move constructor went berserk? |
| 03:17 | <@celticminstrel> | But moving a unique_ptr shouldn’t be calling the move constructor of the content…? |
| 03:18 | <@celticminstrel> | Mind you, I wonder if I can just delete the custom move and copy constructors now… |
| 03:19 | <@celticminstrel> | Ah, there are reference members, so I guess I do need them… |
| 03:19 | <@celticminstrel> | Still, if I factored out all the non-reference members I could probably simplify them dramatically. |
| 03:20 | <@celticminstrel> | But that aside… how on earth does swapping two unique_ptrs alter the content pointed to? |
| 03:20 | <@celticminstrel> | I still have some C array members too, do those require a custom copy/move constructor? |
| 03:21 | <@celticminstrel> | (The reason they haven’t been replaced with `std::array` is because they’re multidimensional.) |
| 03:23 | <@celticminstrel> | Bizarrely, when I search for references to memcpy, Xcode also points me to a use of memmove. |
| 03:24 | <@celticminstrel> | I guess `int mdarray[a][b]` can actually be replaced by `std::array<std::array<int, a>, b>> mdarray` without any additional code changes, right? Or maybe swapping a and b, not sure. |
| 03:26 | <@celticminstrel> | Guess a few code changes are needed. Can’t use `std::extent` on an `std::array`… |
| 03:28 | <@celticminstrel> | I really do need to swap a and b in that example, don’t I… |
| 03:33 | <@celticminstrel> | Huh. I really thought `std::array::size` was static, but apparently it’s not. Fortunately it looks like `std::tuple_size` works. |
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| 04:12 | | mode/#code [+o mac] by ChanServ |
| 04:14 | <&Reiver> | wibs mac |
| 04:14 | | * mac wvaes |
| 04:17 | <&Reiver> | Any luck on the DRG? |
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| 04:28 | | mode/#code [+o mac] by ChanServ |
| 04:29 | <@mac> | Steam's still booting. |
| 04:29 | <&Reiver> | All good |
| 04:29 | <&Reiver> | You should have invites wehn you arrive |
| 04:29 | <@mac> | (On this machine; I'm logged in on the other.) |
| 04:29 | <&Reiver> | (I dunno if the last between sessions so) |
| 04:31 | <@celticminstrel> | I rewrote the swap functions in the “recommended” format but it doesn’t change anything. |
| 04:39 | <@celticminstrel> | I could see this outcome happening if I were swapping the pointee rather than the pointer, but I don’t understand how it could happen when swapping the pointer… |
| 04:39 | <@celticminstrel> | That said, swapping the pointee is actually what I want here, and it still happens when I do that, yet the thing ultimately being swapped has no explicit copy or move constructor. |
| 04:53 | <@celticminstrel> | Feels like I’ve written `x = move(y)` but am actually getting `y = move(x)`… |
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| 07:24 | <&McMartin> | OK, this is actually *much* more Python-shaped than Rust-shaped, but I am overtly amused by what would happen if I did this in Rust |
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| 19:34 | < abudhabi_> | Hmm. Is there some linux way to reboot USB? |
| 19:34 | < abudhabi_> | I occasionally get the issue that my peripherals (mouse and keyboard via KVM) stop working, and a reboot fixes this. |
| 19:35 | < abudhabi_> | I'd like to do the same, but without rebooting. |
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| 21:27 | <&ToxicFrog> | abudhabi_: find the corresponding device nodes in /sys/bus/pci/drivers/xhci_hcd/ (and possibly other *hci_* and *hci-* directories depending on details of your USB hardware). The devices will all be symlinks in those directories consisting of a bunch of numbers separated by colons. |
| 21:27 | <&ToxicFrog> | Echo the device name of the device(s) you want to reset into "unbind" in that directory, wait a bit, then echo it into "bind". |
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| 21:28 | < Mahal> | Just do that witha script, other than relying on the keyboard you're *using* :P |
| 21:31 | <&ToxicFrog> | Yeah. |
| 21:31 | <&ToxicFrog> | Write a shell script to do this for you (or find an existing one; "linux usb reset bind unbind" should work as a search term) and invoke that. |
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| 21:32 | <&ToxicFrog> | (same cautions apply to using `xinput` to wiggle your keyboard's connection to the X session~) |
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| --- Log closed Wed Jan 25 00:00:01 2023 |