| 2026-02-25 00:00:02 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 00:04:20 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 00:07:49 +0100 | <lantti> | mine was https://privatebin.net/?97447d6805a0ea49#CfnZntNYLfYtSvpCod6DSKRYS8xDhzqycvhjmKNhppjv |
| 2026-02-25 00:07:59 +0100 | <haskellbridge> | <ijouw> My solution fails locally at readLn? I am confused. |
| 2026-02-25 00:10:11 +0100 | emmanuelux | (~em@user/emmanuelux) emmanuelux |
| 2026-02-25 00:10:36 +0100 | <haskellbridge> | <ijouw> I was using a library which wraps reads with Maybe and forgot to adjust the type... |
| 2026-02-25 00:10:50 +0100 | <haskellbridge> | <ijouw> When removing it so i can submit with fewer deps |
| 2026-02-25 00:15:24 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 00:19:15 +0100 | <mauke> | lantti: I suggest changing "otherwise" to "print" for even more confusion |
| 2026-02-25 00:19:45 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 00:20:59 +0100 | snek | (sid280155@id-280155.lymington.irccloud.com) (Server closed connection) |
| 2026-02-25 00:21:11 +0100 | snek | (sid280155@id-280155.lymington.irccloud.com) snek |
| 2026-02-25 00:21:44 +0100 | <lantti> | mauke: is it not meant to be used like that? is it only for gurads then? |
| 2026-02-25 00:22:21 +0100 | <lantti> | guards, even |
| 2026-02-25 00:23:39 +0100 | saolsen | (sid26430@id-26430.lymington.irccloud.com) (Server closed connection) |
| 2026-02-25 00:23:50 +0100 | saolsen | (sid26430@id-26430.lymington.irccloud.com) saolsen |
| 2026-02-25 00:25:00 +0100 | <lantti> | but looking at my code now I do admit that there are some decisions that only make sense if you consider that they were the smallest change to the previous version, like the decision to include the lengths of the sets in the same list as the sets themselves |
| 2026-02-25 00:25:38 +0100 | <lantti> | (the previous version used length on the generated lists) |
| 2026-02-25 00:26:53 +0100 | <lantti> | (and the term "step squad" comes from the BBC childrens series called Numberblocks) |
| 2026-02-25 00:29:25 +0100 | <lantti> | (which I can recommend to anyone with children in the 1-3 primary school or earlier) |
| 2026-02-25 00:30:47 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 00:32:16 +0100 | <lantti> | should I use _ -> as the catch all case then? I'm not working with haskell all that much as one may notice |
| 2026-02-25 00:33:05 +0100 | Comstar | (~Comstar@user/Comstar) Comstar |
| 2026-02-25 00:33:39 +0100 | acidsys | (~crameleon@openSUSE/member/crameleon) (Server closed connection) |
| 2026-02-25 00:33:54 +0100 | acidsys | (~crameleon@openSUSE/member/crameleon) crameleon |
| 2026-02-25 00:34:09 +0100 | emmanuelux | (~em@user/emmanuelux) (Quit: bye) |
| 2026-02-25 00:35:05 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 248 seconds) |
| 2026-02-25 00:36:05 +0100 | <int-e> | mauke: Yeah that looks like the best solution. Kind of sad; the simple greedy algorithm for the knapsack problem would work here. |
| 2026-02-25 00:36:15 +0100 | emmanuelux | (~em@user/emmanuelux) emmanuelux |
| 2026-02-25 00:37:02 +0100 | <int-e> | (but then you'd have to accumulate a full result before printing anything) |
| 2026-02-25 00:38:57 +0100 | chenjf | (~chenjf@68.64.178.54) |
| 2026-02-25 00:39:39 +0100 | tamer | (~tamer@user/tamer) (Server closed connection) |
| 2026-02-25 00:40:00 +0100 | tamer | (~tamer@5.2.74.82) |
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| 2026-02-25 00:41:15 +0100 | bjs | (sid190364@user/bjs) bjs |
| 2026-02-25 00:44:58 +0100 | <Comstar> | I can't think of a way to implement breadth-first searches (for the sake of discussion assume for a binary tree) that doesn't use a `Control.Monad.State` implementation |
| 2026-02-25 00:45:29 +0100 | <Comstar> | do y'all know of a more pure approach? I guess I could do like, some folding magic |
| 2026-02-25 00:45:49 +0100 | <Comstar> | I feel like I could probably find some neat code examples searching around github &al |
| 2026-02-25 00:46:11 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 00:46:25 +0100 | chenjf | (~chenjf@68.64.178.54) (Quit: WeeChat 4.8.1) |
| 2026-02-25 00:47:13 +0100 | <int-e> | Comstar: If you have a state S and function branch :: S -> [S] then the list monad's bind (aka concatMap) can produce the next level of a tree from the previous one. (This gets a bit awkward if you also want to record history, but you can make that part of S) |
| 2026-02-25 00:47:36 +0100 | <Comstar> | yeah that makes sense |
| 2026-02-25 00:47:54 +0100 | <int-e> | "history" being the path through the underlying tree |
| 2026-02-25 00:48:15 +0100 | <Leary> | Comstar: There was a haskell challenge for this a while back. This was my solution: https://gist.github.com/LSLeary/5083d1dfe403d1562e7778713d97b22a |
| 2026-02-25 00:49:31 +0100 | <int-e> | Leary: that task is related but abuses Foldable on an infinite tree that you already have as a value. |
| 2026-02-25 00:50:18 +0100 | <int-e> | (and it's an abuse because that Semigroup instance isn't lawful) |
| 2026-02-25 00:50:40 +0100 | <Comstar> | Leary, oh wow line 25 in `Search.hs` is really interesting, I didn't know you could do `\case` like that, does that trick have a name? |
| 2026-02-25 00:50:51 +0100 | <Comstar> | oh it's prob the LambdaCase language extension |
| 2026-02-25 00:50:56 +0100 | <int-e> | it is |
| 2026-02-25 00:50:56 +0100 | <Leary> | int-e: Do we not have a (foldable) binary tree to search? And yes, I agree, but specialising the code to a binary tree means we can kill the evil. |
| 2026-02-25 00:50:57 +0100 | <Comstar> | that'll be fun to explore |
| 2026-02-25 00:51:32 +0100 | <int-e> | Leary: I don't know whether we have one. My main point was that it's abuse. |
| 2026-02-25 00:51:56 +0100 | earthy | (~arthurvl@2a02-a469-f5e2-1-83d2-ca43-57a2-dc81.fixed6.kpn.net) (Ping timeout: 268 seconds) |
| 2026-02-25 00:53:06 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 256 seconds) |
| 2026-02-25 00:53:16 +0100 | peterbecich | (~Thunderbi@71.84.33.135) peterbecich |
| 2026-02-25 00:53:22 +0100 | <lantti> | mauke: oh, now i see. so the "otherwise" only worked because any identifier would have worked there |
| 2026-02-25 00:53:41 +0100 | <int-e> | I've implemented quite a few breadth first searches in Haskell and I've never materialized the tree; only levels (usually as lists because it's convenient, or as sets because I expected a significant number of transpositions.) |
| 2026-02-25 01:04:13 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 01:04:16 +0100 | GdeVolpiano | (~GdeVolpia@user/GdeVolpiano) (Ping timeout: 268 seconds) |
| 2026-02-25 01:05:12 +0100 | Tuplanolla | (~Tuplanoll@88-114-89-88.elisa-laajakaista.fi) Tuplanolla |
| 2026-02-25 01:05:55 +0100 | <Comstar> | what's materializing the tree mean? |
| 2026-02-25 01:07:54 +0100 | <int-e> | I mean constructing a (potentially infinite) value of type `Tree S` where `data Tree s = Node s [Tree s]` from a root :: S and a branching function as above. |
| 2026-02-25 01:08:45 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 01:11:08 +0100 | <EvanR> | lantti, going through String is probably not great, and then i/o on the Char is doing unicode stuff, and ... |
| 2026-02-25 01:11:43 +0100 | GdeVolpiano | (~GdeVolpia@user/GdeVolpiano) GdeVolpiano |
| 2026-02-25 01:16:27 +0100 | peterbecich | (~Thunderbi@71.84.33.135) (Ping timeout: 246 seconds) |
| 2026-02-25 01:19:04 +0100 | <Comstar> | int-e, heard, thanks! |
| 2026-02-25 01:19:36 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 01:20:33 +0100 | <EvanR> | materialize = have the normal form all in memory ? |
| 2026-02-25 01:20:57 +0100 | <int-e> | EvanR: well, no; laziness will still be a factor. |
| 2026-02-25 01:22:11 +0100 | <int-e> | EvanR: But yes, I may be abusing terminology a bit here. |
| 2026-02-25 01:23:55 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 01:26:39 +0100 | <int-e> | EvanR: The main reason I think of it that way is that it becomes harder to ensure that you expand exactly the parts of the tree that you need and you also release them to the garbage collector once you're done with them. |
| 2026-02-25 01:29:43 +0100 | robobub | (uid248673@id-248673.uxbridge.irccloud.com) robobub |
| 2026-02-25 01:34:42 +0100 | <EvanR> | yes constructing an infinite value seems kind of vague operationally, so agree that makes it hard to predict the memory usage pattern |
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| 2026-02-25 06:18:55 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 06:22:19 +0100 | RalphStalfos | (~kvirc@164.sub-174-251-240.myvzw.com) |
| 2026-02-25 06:28:19 +0100 | RalphStalfos | (~kvirc@164.sub-174-251-240.myvzw.com) (Quit: Changing server...) |
| 2026-02-25 06:29:42 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 06:30:59 +0100 | ajrdck | (e0a4b72d53@user/ajrdck) (Server closed connection) |
| 2026-02-25 06:31:08 +0100 | ajrdck | (e0a4b72d53@user/ajrdck) ajrdck |
| 2026-02-25 06:33:55 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 06:34:19 +0100 | slondr | (cf9f9e8f44@2a03:6000:1812:100::10b6) (Server closed connection) |
| 2026-02-25 06:34:27 +0100 | slondr | (cf9f9e8f44@2a03:6000:1812:100::10b6) slondr |
| 2026-02-25 06:36:26 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) |
| 2026-02-25 06:37:46 +0100 | sefidel | (~sefidel@user/sefidel) (Remote host closed the connection) |
| 2026-02-25 06:38:33 +0100 | sefidel | (~sefidel@user/sefidel) sefidel |
| 2026-02-25 06:38:54 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) (Quit: Konversation terminated!) |
| 2026-02-25 06:39:14 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) |
| 2026-02-25 06:40:17 +0100 | michalz | (~michalz@185.246.207.218) |
| 2026-02-25 06:40:25 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) (Client Quit) |
| 2026-02-25 06:43:54 +0100 | wickedjargon | (~user@2605:8d80:5c40:245c:9d0a:1dbd:b59f:8c37) wickedjargon |
| 2026-02-25 06:45:04 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 06:45:39 +0100 | rselim | (ce261f06ff@user/milesrout) (Server closed connection) |
| 2026-02-25 06:45:48 +0100 | rselim | (ce261f06ff@user/milesrout) milesrout |
| 2026-02-25 06:49:39 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 06:55:45 +0100 | filwisher | (2e6936c793@2a03:6000:1812:100::170) |
| 2026-02-25 07:00:36 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 07:05:10 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 07:05:54 +0100 | wickedjargon | (~user@2605:8d80:5c40:245c:9d0a:1dbd:b59f:8c37) (Read error: Connection reset by peer) |
| 2026-02-25 07:08:01 +0100 | wickedjargon | (~user@2605:8d80:5c40:eae6:dd0f:ce4e:9d20:20f0) wickedjargon |
| 2026-02-25 07:10:54 +0100 | takuan | (~takuan@d8D86B9E9.access.telenet.be) |
| 2026-02-25 07:11:11 +0100 | Googulator | (~Googulato@2a01-036d-0106-499d-1c5a-0e4b-5795-d7e3.pool6.digikabel.hu) (Quit: Client closed) |
| 2026-02-25 07:11:27 +0100 | Googulator | (~Googulato@2a01-036d-0106-499d-1c5a-0e4b-5795-d7e3.pool6.digikabel.hu) |
| 2026-02-25 07:15:20 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 07:18:19 +0100 | jkoshy | (99b9359beb@user/jkoshy) (Server closed connection) |
| 2026-02-25 07:18:20 +0100 | shr\ke | (~shrike@user/shrke:31298) (Ping timeout: 265 seconds) |
| 2026-02-25 07:18:28 +0100 | jkoshy | (99b9359beb@user/jkoshy) jkoshy |
| 2026-02-25 07:19:27 +0100 | shr\ke | (~shrike@user/paxhumana) paxhumana |
| 2026-02-25 07:19:27 +0100 | shr\ke | (~shrike@user/paxhumana) (Changing host) |
| 2026-02-25 07:19:27 +0100 | shr\ke | (~shrike@user/shrke:31298) shr\ke |
| 2026-02-25 07:19:45 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 07:23:10 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 265 seconds) |
| 2026-02-25 07:26:59 +0100 | bheesham | (3aa22d8375@2a03:6000:1812:100::e40) (Server closed connection) |
| 2026-02-25 07:27:08 +0100 | bheesham | (3aa22d8375@2a03:6000:1812:100::e40) bheesham |
| 2026-02-25 07:30:43 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 07:31:39 +0100 | whereiseveryone | (206ba86c98@2a03:6000:1812:100::2e4) (Server closed connection) |
| 2026-02-25 07:31:47 +0100 | whereiseveryone | (206ba86c98@2a03:6000:1812:100::2e4) jgart |
| 2026-02-25 07:34:19 +0100 | arcadewise | (52968ed80d@2a03:6000:1812:100::3df) (Server closed connection) |
| 2026-02-25 07:34:27 +0100 | arcadewise | (52968ed80d@2a03:6000:1812:100::3df) l3gacyb3ta |
| 2026-02-25 07:34:55 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 07:35:10 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 07:37:36 +0100 | wickedjargon | (~user@2605:8d80:5c40:eae6:dd0f:ce4e:9d20:20f0) (Ping timeout: 246 seconds) |
| 2026-02-25 07:37:39 +0100 | JoelMcCracken | (5ea8252fbb@2a03:6000:1812:100::10e3) (Server closed connection) |
| 2026-02-25 07:37:50 +0100 | JoelMcCracken | (5ea8252fbb@2a03:6000:1812:100::10e3) JoelMcCracken |
| 2026-02-25 07:38:26 +0100 | RussetParrotBear | (45ce440a48@2a03:6000:1812:100::e2) |
| 2026-02-25 07:39:39 +0100 | simendsjo | (34b0550437@2a03:6000:1812:100::1441) (Server closed connection) |
| 2026-02-25 07:39:47 +0100 | simendsjo | (34b0550437@2a03:6000:1812:100::1441) simendsjo |
| 2026-02-25 07:42:17 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 07:44:19 +0100 | stureplan | (22e45d5caf@user/stureplan) (Server closed connection) |
| 2026-02-25 07:44:28 +0100 | stureplan | (22e45d5caf@user/stureplan) stureplan |
| 2026-02-25 07:44:35 +0100 | Lord_of_Life | (~Lord@user/lord-of-life/x-2819915) (Excess Flood) |
| 2026-02-25 07:46:08 +0100 | Lord_of_Life | (~Lord@user/lord-of-life/x-2819915) Lord_of_Life |
| 2026-02-25 07:46:20 +0100 | myxokephale | (~myxos@174-18-44-59.tcso.qwest.net) myxokephale |
| 2026-02-25 07:46:51 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 265 seconds) |
| 2026-02-25 07:47:43 +0100 | foul_owl | (~kerry@94.156.149.97) (Ping timeout: 264 seconds) |
| 2026-02-25 07:48:34 +0100 | myxos | (~myxos@174-18-58-141.tcso.qwest.net) (Ping timeout: 268 seconds) |
| 2026-02-25 07:51:00 +0100 | humasect | (~humasect@dyn-192-249-132-90.nexicom.net) humasect |
| 2026-02-25 07:51:39 +0100 | probie | (cc0b34050a@user/probie) (Server closed connection) |
| 2026-02-25 07:51:47 +0100 | probie | (cc0b34050a@user/probie) probie |
| 2026-02-25 07:52:40 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 07:53:39 +0100 | lane | (809450f172@2a03:6000:1812:100::1300) (Server closed connection) |
| 2026-02-25 07:53:46 +0100 | lane | (809450f172@2a03:6000:1812:100::1300) lane |
| 2026-02-25 07:56:58 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 256 seconds) |
| 2026-02-25 07:57:41 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 08:01:57 +0100 | foul_owl | (~kerry@94.156.149.91) foul_owl |
| 2026-02-25 08:04:37 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 276 seconds) |
| 2026-02-25 08:11:51 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) |
| 2026-02-25 08:12:06 +0100 | agspades | (~agspades@2401:4900:cab9:e332:4c8e:11ae:4084:30ac) (Client Quit) |
| 2026-02-25 08:15:33 +0100 | tromp | (~textual@2001:1c00:3487:1b00:7955:9591:6018:7ef9) |
| 2026-02-25 08:15:43 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 08:20:10 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 08:26:19 +0100 | mauke | (~mauke@user/mauke) (Server closed connection) |
| 2026-02-25 08:26:29 +0100 | mauke | (~mauke@user/mauke) mauke |
| 2026-02-25 08:31:04 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 08:35:35 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 245 seconds) |
| 2026-02-25 08:36:19 +0100 | preflex | (~preflex@user/mauke/bot/preflex) (Server closed connection) |
| 2026-02-25 08:36:31 +0100 | preflex | (~preflex@user/mauke/bot/preflex) preflex |
| 2026-02-25 08:46:27 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 08:50:45 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 08:53:00 +0100 | misterfish | (~misterfis@84.53.85.146) misterfish |
| 2026-02-25 08:54:08 +0100 | Sgeo | (~Sgeo@user/sgeo) (Read error: Connection reset by peer) |
| 2026-02-25 08:58:45 +0100 | misterfish | (~misterfis@84.53.85.146) (Ping timeout: 272 seconds) |
| 2026-02-25 09:00:26 +0100 | misterfish | (~misterfis@84.53.85.146) misterfish |
| 2026-02-25 09:01:03 +0100 | Fischmiep | (~Fischmiep@user/Fischmiep) Fischmiep |
| 2026-02-25 09:01:10 +0100 | __monty__ | (~toonn@user/toonn) toonn |
| 2026-02-25 09:01:49 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) merijn |
| 2026-02-25 09:06:09 +0100 | merijn | (~merijn@host-cl.cgnat-g.v4.dfn.nl) (Ping timeout: 246 seconds) |
| 2026-02-25 09:06:57 +0100 | peterbecich | (~Thunderbi@71.84.33.135) peterbecich |
| 2026-02-25 09:09:13 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 248 seconds) |
| 2026-02-25 09:24:09 +0100 | Pozyomka | (~pyon@user/pyon) (Ping timeout: 268 seconds) |
| 2026-02-25 09:25:59 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 09:27:02 +0100 | philopsos1 | (~caecilius@user/philopsos) philopsos |
| 2026-02-25 09:29:43 +0100 | chele | (~chele@user/chele) chele |
| 2026-02-25 09:33:06 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 246 seconds) |
| 2026-02-25 09:35:16 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 09:39:37 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 248 seconds) |
| 2026-02-25 09:43:28 +0100 | tzh | (~tzh@c-76-115-131-146.hsd1.or.comcast.net) (Quit: zzz) |
| 2026-02-25 09:45:29 +0100 | emmanuelux | (~em@user/emmanuelux) (Quit: bye) |
| 2026-02-25 09:46:25 +0100 | peterbecich | (~Thunderbi@71.84.33.135) (Ping timeout: 245 seconds) |
| 2026-02-25 09:47:08 +0100 | merijn | (~merijn@77.242.116.146) merijn |
| 2026-02-25 09:50:20 +0100 | oskarw | (~user@user/oskarw) oskarw |
| 2026-02-25 10:09:39 +0100 | gabiruh | (~gabiruh@vps19177.publiccloud.com.br) (Server closed connection) |
| 2026-02-25 10:09:55 +0100 | lbseale | (~quassel@user/ep1ctetus) (Ping timeout: 265 seconds) |
| 2026-02-25 10:09:56 +0100 | gabiruh | (~gabiruh@vps19177.publiccloud.com.br) gabiruh |
| 2026-02-25 10:10:06 +0100 | tromp | (~textual@2001:1c00:3487:1b00:7955:9591:6018:7ef9) (Quit: My iMac has gone to sleep. ZZZzzz…) |
| 2026-02-25 10:11:37 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 10:11:58 +0100 | slomp_ | (~slomp@47-158-212-88.lsan.ca.frontiernet.net) |
| 2026-02-25 10:12:14 +0100 | humasect | (~humasect@dyn-192-249-132-90.nexicom.net) (Remote host closed the connection) |
| 2026-02-25 10:14:45 +0100 | slomp | (~slomp@47-158-212-88.lsan.ca.frontiernet.net) (Ping timeout: 272 seconds) |
| 2026-02-25 10:15:10 +0100 | philopsos1 | (~caecilius@user/philopsos) (Ping timeout: 245 seconds) |
| 2026-02-25 10:16:31 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 264 seconds) |
| 2026-02-25 10:18:08 +0100 | fp | (~Thunderbi@130.233.70.214) fp |
| 2026-02-25 10:20:24 +0100 | mange | (~mange@user/mange) mange |
| 2026-02-25 10:24:09 +0100 | housemate | (~housemate@202.7.248.67) (Quit: https://ineedsomeacidtocalmmedown.space/) |
| 2026-02-25 10:29:39 +0100 | j0lol | (~j0lol@132.145.17.236) (Server closed connection) |
| 2026-02-25 10:29:53 +0100 | j0lol | (~j0lol@132.145.17.236) j0lol |
| 2026-02-25 10:37:09 +0100 | shr\ke | (~shrike@user/shrke:31298) (Ping timeout: 246 seconds) |
| 2026-02-25 10:39:40 +0100 | housemate | (~housemate@202.7.248.67) housemate |
| 2026-02-25 10:43:36 +0100 | shr\ke | (~shrike@user/paxhumana) paxhumana |
| 2026-02-25 10:43:36 +0100 | shr\ke | (~shrike@user/paxhumana) (Changing host) |
| 2026-02-25 10:43:36 +0100 | shr\ke | (~shrike@user/shrke:31298) shr\ke |
| 2026-02-25 10:47:01 +0100 | Digit | (~user@user/digit) (Ping timeout: 264 seconds) |
| 2026-02-25 10:47:15 +0100 | fp | (~Thunderbi@130.233.70.214) (Ping timeout: 245 seconds) |
| 2026-02-25 10:49:37 +0100 | humasect | (~humasect@dyn-192-249-132-90.nexicom.net) humasect |
| 2026-02-25 10:50:34 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 10:52:19 +0100 | vulpine | (xfnw@user/meow/xfnw) (Server closed connection) |
| 2026-02-25 10:52:39 +0100 | vulpine | (xfnw@user/meow/xfnw) xfnw |
| 2026-02-25 11:05:47 +0100 | Digit | (~user@user/digit) Digit |
| 2026-02-25 11:06:05 +0100 | prdak | (~Thunderbi@user/prdak) (Remote host closed the connection) |
| 2026-02-25 11:06:24 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 11:10:39 +0100 | prdak1 | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 11:10:51 +0100 | prdak | (~Thunderbi@user/prdak) (Read error: Connection reset by peer) |
| 2026-02-25 11:10:51 +0100 | prdak1 | prdak |
| 2026-02-25 11:14:23 +0100 | prdak1 | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 11:14:34 +0100 | prdak | (~Thunderbi@user/prdak) (Read error: Connection reset by peer) |
| 2026-02-25 11:14:34 +0100 | prdak1 | prdak |
| 2026-02-25 11:16:29 +0100 | prdak1 | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 11:19:31 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 264 seconds) |
| 2026-02-25 11:19:31 +0100 | prdak1 | prdak |
| 2026-02-25 11:23:42 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 246 seconds) |
| 2026-02-25 11:26:42 +0100 | divlamir | (~divlamir@user/divlamir) (Read error: Connection reset by peer) |
| 2026-02-25 11:27:02 +0100 | natto17 | (~natto@129.154.243.159) (Read error: Connection reset by peer) |
| 2026-02-25 11:27:03 +0100 | divlamir | (~divlamir@user/divlamir) divlamir |
| 2026-02-25 11:28:18 +0100 | carbolymer | (~carbolyme@delirium.systems) (Read error: Connection reset by peer) |
| 2026-02-25 11:28:24 +0100 | natto17 | (~natto@129.154.243.159) natto |
| 2026-02-25 11:28:27 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 11:28:48 +0100 | carbolymer | (~carbolyme@delirium.systems) carbolymer |
| 2026-02-25 11:35:37 +0100 | mangoiv | (~mangoiv@2a01:4f9:c012:6c0e::) (Changing host) |
| 2026-02-25 11:35:37 +0100 | mangoiv | (~mangoiv@user/mangoiv) mangoiv |
| 2026-02-25 11:38:21 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 11:42:28 +0100 | ec | (~ec@gateway/tor-sasl/ec) (Ping timeout: 252 seconds) |
| 2026-02-25 11:42:59 +0100 | systemfault | (sid267009@about/typescript/member/systemfault) (Server closed connection) |
| 2026-02-25 11:43:14 +0100 | systemfault | (sid267009@about/typescript/member/systemfault) systemfault |
| 2026-02-25 11:50:16 +0100 | Arsen | (16abab341f@gentoo/developer/managarm.dev.Arsen) (Remote host closed the connection) |
| 2026-02-25 11:50:24 +0100 | Arsen | (16abab341f@gentoo/developer/managarm.dev.Arsen) Arsen |
| 2026-02-25 11:51:38 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 252 seconds) |
| 2026-02-25 11:53:36 +0100 | fp | (~Thunderbi@2001:708:20:1406::10c5) fp |
| 2026-02-25 11:56:57 +0100 | humasect | (~humasect@dyn-192-249-132-90.nexicom.net) (Remote host closed the connection) |
| 2026-02-25 11:57:39 +0100 | PotatoGim | (sid99505@id-99505.lymington.irccloud.com) (Server closed connection) |
| 2026-02-25 11:58:05 +0100 | PotatoGim | (sid99505@id-99505.lymington.irccloud.com) PotatoGim |
| 2026-02-25 12:00:16 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 12:08:25 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 248 seconds) |
| 2026-02-25 12:12:19 +0100 | Kamuela | (sid111576@id-111576.tinside.irccloud.com) (Server closed connection) |
| 2026-02-25 12:12:34 +0100 | Kamuela | (sid111576@id-111576.tinside.irccloud.com) Kamuela |
| 2026-02-25 12:14:29 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 245 seconds) |
| 2026-02-25 12:31:17 +0100 | housemate | (~housemate@202.7.248.67) (Quit: https://ineedsomeacidtocalmmedown.space/) |
| 2026-02-25 12:36:02 +0100 | Pozyomka | (~pyon@user/pyon) pyon |
| 2026-02-25 12:40:02 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 12:43:55 +0100 | <chromoblob> | why can't the compiler itself choose the optimal representation for strings even when code uses String? |
| 2026-02-25 12:48:04 +0100 | <probie> | Without forcing "whole program compilation" that's pretty much impossible |
| 2026-02-25 13:01:08 +0100 | philopsos1 | (~caecilius@user/philopsos) philopsos |
| 2026-02-25 13:02:15 +0100 | spew | (~spew@user/spew) spew |
| 2026-02-25 13:02:15 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 255 seconds) |
| 2026-02-25 13:04:05 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 13:08:21 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 246 seconds) |
| 2026-02-25 13:12:01 +0100 | p3n | (~p3n@2a00:19a0:3:7c:0:d9c6:7cf6:1) (Quit: ZNC 1.10.1 - https://znc.in) |
| 2026-02-25 13:14:49 +0100 | p3n | (~p3n@2a00:19a0:3:7c:0:d9c6:7cf6:1) p3n |
| 2026-02-25 13:15:00 +0100 | spew | (~spew@user/spew) (Quit: nyaa~) |
| 2026-02-25 13:17:16 +0100 | mange | (~mange@user/mange) (Quit: Zzz...) |
| 2026-02-25 13:18:19 +0100 | berberman | (~berberman@user/berberman) (Server closed connection) |
| 2026-02-25 13:18:29 +0100 | berberman | (~berberman@user/berberman) berberman |
| 2026-02-25 13:20:40 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 13:24:05 +0100 | housemate | (~housemate@202.7.248.67) housemate |
| 2026-02-25 13:32:53 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 13:34:31 +0100 | Lord_of_Life | (~Lord@user/lord-of-life/x-2819915) (Quit: Laa shay'a waqi'un moutlaq bale kouloun moumkine) |
| 2026-02-25 13:35:54 +0100 | Lord_of_Life | (~Lord@user/lord-of-life/x-2819915) Lord_of_Life |
| 2026-02-25 13:36:26 +0100 | <merijn> | chromoblob: Because "optimal" is a hard thing to define :p |
| 2026-02-25 13:36:38 +0100 | <merijn> | chromoblob: That said, string literals aren't actually even [Char] in compiled code |
| 2026-02-25 13:36:52 +0100 | <merijn> | String literals are compiled to dense byte blobs that get lazily converted into [Char] |
| 2026-02-25 13:37:32 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 256 seconds) |
| 2026-02-25 13:38:59 +0100 | Moyst | (~moyst@user/moyst) (Server closed connection) |
| 2026-02-25 13:39:48 +0100 | <chromoblob> | well, no need to perfect things, but it'd be cool if Strings were stored as a UTF-8 buffer + a thunk for the rest of string |
| 2026-02-25 13:40:11 +0100 | <chromoblob> | yeah, Unicode complicated |
| 2026-02-25 13:40:14 +0100 | Moyst | (~moyst@user/moyst) Moyst |
| 2026-02-25 13:40:17 +0100 | <chromoblob> | complicates * |
| 2026-02-25 13:40:23 +0100 | poscat | (~poscat@user/poscat) (Remote host closed the connection) |
| 2026-02-25 13:40:48 +0100 | <chromoblob> | could use UTF-32 or "UTF-24" |
| 2026-02-25 13:41:41 +0100 | <merijn> | chromoblob: That's just Text? |
| 2026-02-25 13:41:45 +0100 | <merijn> | Rather |
| 2026-02-25 13:41:47 +0100 | <merijn> | Lazy Text |
| 2026-02-25 13:42:02 +0100 | machinedgod | (~machinedg@d172-219-48-230.abhsia.telus.net) machinedgod |
| 2026-02-25 13:42:08 +0100 | <chromoblob> | well, the source code would be portable... |
| 2026-02-25 13:42:11 +0100 | <merijn> | chromoblob: Basically automatically deciding optimal layout is hard, if not impossible |
| 2026-02-25 13:42:42 +0100 | <merijn> | That's the reason why Haskell has like 5-8 string types (depending how you count :p) |
| 2026-02-25 13:42:55 +0100 | tremon | (~tremon@83.80.159.219) tremon |
| 2026-02-25 13:43:03 +0100 | <chromoblob> | i mean, there are almost always very easy to decide optimizations |
| 2026-02-25 13:44:00 +0100 | poscat | (~poscat@user/poscat) poscat |
| 2026-02-25 13:44:19 +0100 | <merijn> | chromoblob: I mean, feel free to try it :> |
| 2026-02-25 13:44:57 +0100 | <chromoblob> | ;) |
| 2026-02-25 13:44:59 +0100 | comonad | (~comonad@p200300d02722ae00dce4ce9451b59974.dip0.t-ipconnect.de) (Server closed connection) |
| 2026-02-25 13:45:16 +0100 | comonad | (~comonad@p200300d02722ae00dce4ce9451b59974.dip0.t-ipconnect.de) |
| 2026-02-25 13:50:04 +0100 | Athas | (athas@2a01:7c8:aaac:1cf:10a0:cce8:21cf:53aa) (Quit: ZNC 1.9.1 - https://znc.in) |
| 2026-02-25 13:50:17 +0100 | Athas | (athas@2a01:7c8:aaac:1cf:5b23:7d4e:8d70:47e1) |
| 2026-02-25 13:52:05 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 13:52:37 +0100 | <__monty__> | chromoblob: Char is analogous to UTF-32 already, no? |
| 2026-02-25 13:53:27 +0100 | <__monty__> | So that leaves having a "buffer" instead of a list. And that just doesn't play as nice with functional idioms. |
| 2026-02-25 13:54:15 +0100 | <chromoblob> | speed and memory is "nicer" to me than "niceness" |
| 2026-02-25 13:55:05 +0100 | <__monty__> | That's the thing, it'd be slower for most of the code written to use String. |
| 2026-02-25 13:56:18 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 246 seconds) |
| 2026-02-25 13:58:34 +0100 | chenjf | (~chenjf@68.64.178.54) |
| 2026-02-25 14:02:57 +0100 | chenjf | (~chenjf@68.64.178.54) (Client Quit) |
| 2026-02-25 14:08:09 +0100 | <merijn> | hiredman: Then just use Text everywhere :P |
| 2026-02-25 14:08:20 +0100 | <merijn> | s/hiredman/chromoblob |
| 2026-02-25 14:08:27 +0100 | <haskellbridge> | <magic_rb> yeah Text ftw |
| 2026-02-25 14:08:48 +0100 | <merijn> | converting Text to String is pretty efficient anyway |
| 2026-02-25 14:11:52 +0100 | oskarw | (~user@user/oskarw) (ERC 5.6.1 (IRC client for GNU Emacs 30.2)) |
| 2026-02-25 14:14:46 +0100 | <dminuoso> | chromoblob: Also, regarding your initial question: GHC compiles to native machine code ultimately, and we compile into object files that get turned into separate object files that are later together, but you dont even know the access pattern ahead of time. |
| 2026-02-25 14:15:25 +0100 | <chromoblob> | yes, i got it |
| 2026-02-25 14:17:14 +0100 | <dminuoso> | Im not entirely sure all excuses are good at the end. |
| 2026-02-25 14:17:18 +0100 | housemate | (~housemate@202.7.248.67) (Quit: https://ineedsomeacidtocalmmedown.space/) |
| 2026-02-25 14:17:24 +0100 | <dminuoso> | I feel like String was a bad idea to begin with. |
| 2026-02-25 14:18:43 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 14:23:14 +0100 | qqq | (~qqq@185.54.22.240) (Ping timeout: 268 seconds) |
| 2026-02-25 14:23:40 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 265 seconds) |
| 2026-02-25 14:23:46 +0100 | bggd_ | (~bgg@2a01:e0a:fd5:f510:37b0:d42d:8afb:890) |
| 2026-02-25 14:27:13 +0100 | housemate | (~housemate@202.7.248.67) housemate |
| 2026-02-25 14:36:20 +0100 | <probie> | I think other representations make it a headache if you're not willing to specify what a `Char` actually is |
| 2026-02-25 14:38:55 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 14:43:31 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 264 seconds) |
| 2026-02-25 14:59:12 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 15:01:41 +0100 | Pozyomka | (~pyon@user/pyon) (Quit: brb) |
| 2026-02-25 15:06:03 +0100 | Pozyomka | (~pyon@user/pyon) pyon |
| 2026-02-25 15:09:43 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 268 seconds) |
| 2026-02-25 15:11:39 +0100 | Wanderer | (~wanderer@user/wanderer) (Server closed connection) |
| 2026-02-25 15:14:35 +0100 | Wanderer | (~wanderer@user/wanderer) Wanderer |
| 2026-02-25 15:16:45 +0100 | <dutchie> | is there a good way to write `lesserPresent :: Ord a => Maybe a -> Maybe a -> Maybe a` that returns the minimum? currently doing silly things with maybeToList and minimum |
| 2026-02-25 15:17:22 +0100 | <dutchie> | `liftA2 min` is almost exactly the wrong thing |
| 2026-02-25 15:18:13 +0100 | <dutchie> | `asum [liftA2 min mx my, mx, my]`? |
| 2026-02-25 15:18:14 +0100 | <aka_dude> | Hey. I want to talk to mentor of https://summer.haskell.org/ideas.html#ui-layout-library-for-haskell proposal, Adrian Sieber (ad-si). Do you know where can I reach him? |
| 2026-02-25 15:20:53 +0100 | lbseale | (~quassel@user/ep1ctetus) ep1ctetus |
| 2026-02-25 15:23:35 +0100 | lbseale | (~quassel@user/ep1ctetus) (Client Quit) |
| 2026-02-25 15:24:19 +0100 | lbseale | (~quassel@user/ep1ctetus) ep1ctetus |
| 2026-02-25 15:24:30 +0100 | <dminuoso> | https://hackage.haskell.org/package/base64-bytestring-1.2.1.0/docs/src/Data.ByteString.Base64.html - at the bottom there is a definition for decodePF |
| 2026-02-25 15:24:34 +0100 | <dminuoso> | BS decodeFP _ = |
| 2026-02-25 15:24:37 +0100 | <dminuoso> | What kind of syntax is that? |
| 2026-02-25 15:26:12 +0100 | rainbyte | (~rainbyte@186.22.19.214) rainbyte |
| 2026-02-25 15:27:54 +0100 | <__monty__> | dminuoso: CPP-aided crimes? |
| 2026-02-25 15:28:15 +0100 | <dminuoso> | I mean PS/BS are pattern synonyms.. |
| 2026-02-25 15:28:32 +0100 | <dminuoso> | But neither is PatternSynonyms enabled, nor are there any macros introduced in that file |
| 2026-02-25 15:29:08 +0100 | <dminuoso> | Or rather, PS is a pattern and BS is a constructor.. |
| 2026-02-25 15:30:49 +0100 | <mauke> | pattern matching/binding |
| 2026-02-25 15:31:11 +0100 | <mauke> | (:) x _ = [1,2,3] |
| 2026-02-25 15:31:20 +0100 | <__monty__> | > let [x] = ["hello"] in x |
| 2026-02-25 15:31:21 +0100 | <lambdabot> | "hello" |
| 2026-02-25 15:31:22 +0100 | <dminuoso> | mauke: Yeah but.. |
| 2026-02-25 15:31:33 +0100 | <dminuoso> | % x :: Int; [x] = 1 |
| 2026-02-25 15:31:33 +0100 | <yahb2> | <interactive>:7:17: error: [GHC-39999] ; • No instance for ‘Num [Int]’ arising from the literal ‘1’ ; • In the expression: 1 ; In a pattern binding: [x] = 1 |
| 2026-02-25 15:31:38 +0100 | <dminuoso> | I cant do that. |
| 2026-02-25 15:31:45 +0100 | <dminuoso> | Oh |
| 2026-02-25 15:31:47 +0100 | <mauke> | well, that's a type error |
| 2026-02-25 15:31:48 +0100 | <dminuoso> | % x :: Int; [x] = [1] |
| 2026-02-25 15:31:48 +0100 | <yahb2> | <no output> |
| 2026-02-25 15:31:50 +0100 | <dminuoso> | o.o |
| 2026-02-25 15:31:53 +0100 | dminuoso | is baffled |
| 2026-02-25 15:32:07 +0100 | <dminuoso> | I mean it feels obvious and nice, it just never occured to me... |
| 2026-02-25 15:32:53 +0100 | <mauke> | (f, g) = fix (... some nonsense ...) |
| 2026-02-25 15:33:00 +0100 | <mauke> | I'm pretty sure I've done something like this before |
| 2026-02-25 15:33:16 +0100 | <dminuoso> | mauke: Now that you mention it, I actually recall some obscure haskell report facts about this. |
| 2026-02-25 15:33:25 +0100 | <dminuoso> | I think they are called non-trivial pattern bindings or some such |
| 2026-02-25 15:33:31 +0100 | <dutchie> | I've used it when writing Servant stuff |
| 2026-02-25 15:33:43 +0100 | <__monty__> | dminuoso: As for PS, "enabled by the language extension PatternSynonyms, which is required for defining them, but not for using them." |
| 2026-02-25 15:34:06 +0100 | <dminuoso> | __monty__: Ugh. |
| 2026-02-25 15:34:13 +0100 | <dminuoso> | Okay, that explains that part too, then. |
| 2026-02-25 15:35:05 +0100 | <dminuoso> | mauke: MMR does not kick in for these non-trivial bindings, and I think (f, g) was even mentioned as an example in the report. |
| 2026-02-25 15:36:24 +0100 | <mauke> | % [foo] = [42] |
| 2026-02-25 15:36:25 +0100 | <yahb2> | <no output> |
| 2026-02-25 15:36:29 +0100 | <mauke> | % :t foo |
| 2026-02-25 15:36:29 +0100 | <yahb2> | foo :: Num a => a |
| 2026-02-25 15:38:19 +0100 | sttau | (~sttau@199.180.255.81) (Server closed connection) |
| 2026-02-25 15:38:27 +0100 | sttau | (~sttau@199.180.255.81) |
| 2026-02-25 15:40:09 +0100 | philopsos1 | (~caecilius@user/philopsos) (Ping timeout: 248 seconds) |
| 2026-02-25 15:46:03 +0100 | <dminuoso> | By the way, its striking how often the impossible happens to me. |
| 2026-02-25 15:46:05 +0100 | <dminuoso> | ghc: panic! (the 'impossible' happened) (GHC version 9.2.8: primRepToFFIType |
| 2026-02-25 15:49:31 +0100 | prdak | (~Thunderbi@user/prdak) (Ping timeout: 264 seconds) |
| 2026-02-25 15:51:00 +0100 | fp | (~Thunderbi@2001:708:20:1406::10c5) (Ping timeout: 245 seconds) |
| 2026-02-25 15:52:34 +0100 | fp | (~Thunderbi@wireless-86-50-141-0.open.aalto.fi) fp |
| 2026-02-25 15:56:07 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
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| 2026-02-25 16:08:35 +0100 | troydm | (~troydm@user/troydm) (Quit: What is Hope? That all of your wishes and all of your dreams come true? To turn back time because things were not supposed to happen like that (C) Rau Le Creuset) |
| 2026-02-25 16:12:23 +0100 | Psychotic1 | (~Psychotic@2600:1007:b0aa:7216:54da:2a86:8a54:a2c4) |
| 2026-02-25 16:12:32 +0100 | pavonia | (~user@user/siracusa) (Quit: Bye!) |
| 2026-02-25 16:14:56 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
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| 2026-02-25 16:23:50 +0100 | Adeon | (sid418992@id-418992.lymington.irccloud.com) Adeon |
| 2026-02-25 16:25:39 +0100 | ProofTechnique_ | (sid79547@id-79547.ilkley.irccloud.com) (Server closed connection) |
| 2026-02-25 16:25:48 +0100 | ProofTechnique_ | (sid79547@id-79547.ilkley.irccloud.com) |
| 2026-02-25 16:29:00 +0100 | rekahsoft | (~rekahsoft@76.67.111.168) rekahsoft |
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| 2026-02-25 16:34:57 +0100 | Psychotic1 | (~Psychotic@2600:1007:b0aa:7216:54da:2a86:8a54:a2c4) (Quit: Leaving) |
| 2026-02-25 16:35:31 +0100 | emaczen | (~user@user/emaczen) emaczen |
| 2026-02-25 16:36:09 +0100 | Katarushisu6 | (~Katarushi@finc-20-b2-v4wan-169598-cust1799.vm7.cable.virginm.net) (Ping timeout: 245 seconds) |
| 2026-02-25 16:43:32 +0100 | fp | (~Thunderbi@2001:708:150:10::9d7e) (Quit: fp) |
| 2026-02-25 16:48:09 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 16:48:30 +0100 | Psychotic1 | (~Psychotic@65.sub-174-245-22.myvzw.com) |
| 2026-02-25 16:49:05 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
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| 2026-02-25 16:52:54 +0100 | housemate | (~housemate@202.7.248.67) (Quit: https://ineedsomeacidtocalmmedown.space/) |
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| 2026-02-25 16:57:49 +0100 | housemate | (~housemate@202.7.248.67) housemate |
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| 2026-02-25 17:01:37 +0100 | weary-traveler | (~user@user/user363627) (Remote host closed the connection) |
| 2026-02-25 17:01:49 +0100 | Psychotic1__ | (~Psychotic@2600:1007:b0aa:7216:54da:2a86:8a54:a2c4) |
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| 2026-02-25 17:11:57 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 17:12:58 +0100 | prdak | (~Thunderbi@user/prdak) (Read error: Connection reset by peer) |
| 2026-02-25 17:13:16 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
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| 2026-02-25 17:16:37 +0100 | prdak | (~Thunderbi@user/prdak) prdak |
| 2026-02-25 17:24:59 +0100 | Maxdamantus | (~Maxdamant@user/maxdamantus) (Server closed connection) |
| 2026-02-25 17:25:15 +0100 | Maxdamantus | (~Maxdamant@user/maxdamantus) Maxdamantus |
| 2026-02-25 17:26:19 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 17:29:44 +0100 | <EvanR> | if chromoblob goes to the oracle and comes back with a ghc which chooses the optimal implementation for String at each point in the program, and optimal conversion points. Then I want it to also work on cartesian vs polar complex numbers please |
| 2026-02-25 17:30:11 +0100 | <EvanR> | feel free to pile on other examples |
| 2026-02-25 17:31:28 +0100 | housemate | (~housemate@202.7.248.67) (Quit: https://ineedsomeacidtocalmmedown.space/) |
| 2026-02-25 17:33:36 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 255 seconds) |
| 2026-02-25 17:43:02 +0100 | housemate | (~housemate@202.7.248.67) housemate |
| 2026-02-25 17:48:54 +0100 | <ski> | @ghc |
| 2026-02-25 17:48:54 +0100 | <lambdabot> | Can't happen |
| 2026-02-25 17:49:10 +0100 | messewix | (~jmc@user/messewix) messewix |
| 2026-02-25 17:49:22 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 17:49:55 +0100 | <ski> | loop@(map f) (x:xs) = f x : loop xs -- would be nice to be able to do this kind of thing |
| 2026-02-25 17:51:16 +0100 | <ski> | (fooWith cfg)@(let cfg = defaultCfg in foo) ... = ... -- or this |
| 2026-02-25 17:52:43 +0100 | st_aldini | (~Thunderbi@136.48.46.187) (Quit: st_aldini) |
| 2026-02-25 17:53:27 +0100 | <EvanR> | what's this @ sign |
| 2026-02-25 17:53:36 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 246 seconds) |
| 2026-02-25 17:54:35 +0100 | <Clint> | as-pattern |
| 2026-02-25 17:54:59 +0100 | EvanR | (~EvanR@user/evanr) (Server closed connection) |
| 2026-02-25 17:55:24 +0100 | EvanR | (~EvanR@user/evanr) EvanR |
| 2026-02-25 17:56:29 +0100 | <ski> | > let f :: Integer -> Integer; f ?x = ?x + 1 in f (f 3) |
| 2026-02-25 17:56:31 +0100 | <lambdabot> | <hint>:1:32: error: Expression syntax in pattern: ?x |
| 2026-02-25 17:57:05 +0100 | <ski> | yes. the second `@' would be the generalization of and/conjunction-pattern |
| 2026-02-25 17:58:21 +0100 | <ski> | where `let cfg = defaultCfg in foo' is a pattern that matches the input to `foo', and additionally binds `cfg' to `defaultCfg' (so that regardless of whether we use the `fooWith' or the `foo' entry point to the code, `cfg' will be in scope in the body) |
| 2026-02-25 17:59:41 +0100 | fgarcia | (~lei@user/fgarcia) (Ping timeout: 268 seconds) |
| 2026-02-25 18:01:39 +0100 | misterfish | (~misterfis@84.53.85.146) (Ping timeout: 246 seconds) |
| 2026-02-25 18:03:39 +0100 | lortabac | (~lortabac@mx1.fracta.dev) (Server closed connection) |
| 2026-02-25 18:03:53 +0100 | lortabac | (~lortabac@mx1.fracta.dev) lortabac |
| 2026-02-25 18:04:29 +0100 | <ski> | it would be nice to be able to say something like `(frob,barf) = (\ ?cfg -> foo,\ ?cfg -> bar) where foo :: (?cfg :: ...) => ...; foo = ..?cfg..foo..bar..; bar :: (?cfg :: ...) => ...; bar = ..?cfg..foo.bar..' (having a common "config" argument in scope, over mutual recursion, avoiding repeating it in the recursive calls) |
| 2026-02-25 18:05:31 +0100 | <ski> | maybe there's be some version of |
| 2026-02-25 18:05:52 +0100 | <ski> | foo@(frob cfg) = ..cfg..foo..bar.. |
| 2026-02-25 18:06:01 +0100 | <ski> | bar@(barf cfg) = ..cfg..foo..bar.. |
| 2026-02-25 18:06:08 +0100 | <ski> | to express this .. |
| 2026-02-25 18:06:39 +0100 | <ski> | (issue is how to (reasonably) get both `foo' and `bar' in scope in both bodies ..) |
| 2026-02-25 18:08:59 +0100 | sondr3 | (sondr3@2a01:7e01::f03c:92ff:fe06:7664) (Server closed connection) |
| 2026-02-25 18:09:09 +0100 | sondr3 | (sondr3@2a01:7e01::f03c:92ff:fe06:7664) |
| 2026-02-25 18:10:29 +0100 | <ski> | (for the `loop' & `map' case above, `loop' doesn't explicitly bind the `f' parameter (and so must already assume `f' already comes from somewhere), so `loop' would just be in scope in the body, and not be in scope elsewhere `map' is in scope (where `f' isn't). in the `fooWith' & `foo' case, both conjuncts does bind `cfg', so both `fooWith' and `foo' makes sense here to use in a scope where `cfg' is not bound) |
| 2026-02-25 18:10:37 +0100 | <haskellbridge> | <ijouw> You want (f g) to implicitly use another function named g that is in scope at use site? |
| 2026-02-25 18:11:34 +0100 | <ski> | no |
| 2026-02-25 18:11:47 +0100 | <ski> | (this is not about dynamic scope) |
| 2026-02-25 18:15:19 +0100 | <ski> | (it's not clear whether by `f g' you mean an expression, or a pattern, btw ..) |
| 2026-02-25 18:16:50 +0100 | <ski> | this is about creative uses of patterns and scoping, to effect some convenience/elegance, for certain kinds of definition idioms |
| 2026-02-25 18:18:55 +0100 | merijn | (~merijn@77.242.116.146) (Ping timeout: 245 seconds) |
| 2026-02-25 18:20:59 +0100 | <ski> | (a) the `loop' and `map' case would be a way to give a *local* name for the function you're defining, applied to some prefix of the formal parameters, so that you don't need to repeat those parameters at recursive calls. this abbreviated form would naturally only be in scope inside the definition, and not elsewhere (because we would not know which value `f' would be bound to). it would be possible to use an |
| 2026-02-25 18:21:05 +0100 | <ski> | explicit recursive call, passing some different value(s) for the prefix parameters, which would then bind the identifier (`loop') here to this *new* prefix, for that recursive call (this can e.g. be useful, if you're passing around an environment to an interpreter or type checker, mostly you want to pass along the same environment, but sometimes you want to change it) |
| 2026-02-25 18:23:02 +0100 | <ski> | (b) sometimes you have a general version of a function, and one version specialized to passing some default value for a parameter, as exemplified by `fooWith' & `foo'. as indicated, this could be done with conjunctive patterns, and `let'-`in'-patterns |
| 2026-02-25 18:24:14 +0100 | <haskellbridge> | <ijouw> Do you intend foo = ..?cfg..foo..bar.. to be recursive? |
| 2026-02-25 18:25:35 +0100 | uli-fem | (~uli-fem@118.210.1.123) |
| 2026-02-25 18:25:52 +0100 | <ski> | (c) sometimes you want to do (a), but for mutually recursive functions, wanting to avoid passing around the *same* identical prefix parameters. so, i was pondering how one could possibly effect that, with a minimum of fuss. one attempt was to locally bind the respective parameters to an implicit `?cfg' (implementation detail), and then use that for the local, mutually recursive, definitions. there might be a |
| 2026-02-25 18:25:59 +0100 | <ski> | nicer way to do it, but one would need to explain how `foo' could be in scope in the `barf' definition, and how `bar' could be in scope in the `frob' definition |
| 2026-02-25 18:26:36 +0100 | <ski> | ijouw : yes (that's why i wrote `foo' and `bar' in `..?cfg..foo.bar..', to indicate that those three would be allowed to occur free in that body) |
| 2026-02-25 18:27:08 +0100 | jmcantrell_ | (~weechat@user/jmcantrell) jmcantrell |
| 2026-02-25 18:27:37 +0100 | <haskellbridge> | <ijouw> After enabling OverloadedRecordDot my brain parses that weirdly |
| 2026-02-25 18:27:59 +0100 | ski | prefers to pretend that extension does not exist |
| 2026-02-25 18:30:14 +0100 | <ski> | (btw, it would perhaps look neater to say `foo where cfg = defaultCfg' in place of `let cfg = defaultCfg in foo' .. but `where' is not an expression, attaches to defining equations (and `case' branches)) |
| 2026-02-25 18:30:17 +0100 | uli-fem | (~uli-fem@118.210.1.123) (Ping timeout: 248 seconds) |
| 2026-02-25 18:34:19 +0100 | <haskellbridge> | <ijouw> Using current language, I would likely try to solve the dependency by making foo and bar a function and using liftA2 a lot and other pointfree stuff so cfg is never specified (but that will likely not make it readable). |
| 2026-02-25 18:34:49 +0100 | <ski> | yea, that's too invasive |
| 2026-02-25 18:35:05 +0100 | emaczen | (~user@user/emaczen) (Remote host closed the connection) |
| 2026-02-25 18:36:10 +0100 | <ski> | a somewhat related thing is the `local <decls> in <decls> end' declaration, in SML. it declares the latter declarations (between `in' and `end'), while hiding the former ones, letting them be in scope in the latter ones, but not visible elsewhere |
| 2026-02-25 18:37:00 +0100 | <ski> | in Haskell, you often have to resort to `(foo,bar) = (myFoo,MyBar) where myFoo = ...; myBar = ...; extraDef = ...', for this, which is ugly |
| 2026-02-25 18:37:38 +0100 | <ski> | in SML, this would be `local fun extraDef ... = ... in fun foo ... = ... and bar ... = ... end' |
| 2026-02-25 18:38:04 +0100 | <ski> | (`fun ... and ...' is mutual recursive functions) |
| 2026-02-25 18:38:09 +0100 | emaczen | (~user@user/emaczen) emaczen |
| 2026-02-25 18:38:19 +0100 | fgarcia | (~lei@user/fgarcia) fgarcia |
| 2026-02-25 18:40:01 +0100 | <ski> | (of course, you could simply hide, not export, `extraDef', from the module in question. but it's often nice to restrict scope more, to make sure it's evident that `extraDef' isn't used elsewhere in the module. and Haskell doesn't allow nested submodules ..) |
| 2026-02-25 18:41:22 +0100 | <EvanR> | I have to admit I'm a never nester |
| 2026-02-25 18:41:42 +0100 | <ski> | you never define local functions in a `where' or `let' ? |
| 2026-02-25 18:45:16 +0100 | <ski> | (.. sometimes i also want to use `if' or `case', at declaration level. `if ... then {f x = ...; g y z = ...} else {f x = ...; g y z = ...}'. having declarations as the body of the branches, conditionally defining in one of several ways (all branches have to define the same identifiers, naturally)) |
| 2026-02-25 18:45:20 +0100 | tromp | (~textual@2001:1c00:3487:1b00:7955:9591:6018:7ef9) |
| 2026-02-25 18:45:54 +0100 | <__monty__> | I love Agda's approach to scoping, https://agda.readthedocs.io/en/latest/language/module-system.html |