| --- Log opened Sat Nov 28 00:00:40 2020 |
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| 00:43 | | ServerMode/#code [+oqoaoooaoaoaooaooao macdjord|slep Vornicus Vornicus Reiver Reiver gnolam iospace McMartin McMartin jeroud jeroud ToxicFrog ToxicFrog sshine jerith jerith crystalclaw [R] [R]] by *.Nightstar.Net |
| 00:44 | | Pink is now known as NSGuest13138 |
| 00:48 | | * McMartin makes cranky grumble noises, is obligated to do some Perl hacking. |
| 00:50 | <~Vornicus> | well justified |
| 00:50 | <&McMartin> | I can't even blame Zombie Steve |
| 00:50 | <&McMartin> | This is the fault of POSIX symlinks |
| 00:52 | <&McMartin> | (Trying to get UQM 0.8 rc1, as built on my macOS 10.15 machine, to run on my macOS 11.1 machine.) |
| 00:52 | <~Vornicus> | they finally decided enough 10? |
| 00:53 | <&McMartin> | Yup, Big Sur is macOS 11, and apparently part of the delay in the release post-Catalina was enough to mean there was also never a publically released 11.0 |
| 00:54 | <&McMartin> | The introduction of Apple Silicon (which I am *not* trying to get working here) is as good an excuse as any to remember what number comes after 10 |
| 00:54 | <&McMartin> | And since they spent twenty years having a big mad at people calling it Oh Ess Ecks |
| 00:54 | <&McMartin> | Now they have an excuse to insist on "macOS" |
| 00:54 | <&McMartin> | We should call it Oh Ess Ecks Eye to just to spite them. |
| 00:55 | <~Vornicus> | yes |
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| 01:30 | <&ToxicFrog> | It's DEFMACRO TIME |
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| 14:59 | <&jerith> | ========================================================= |
| 14:59 | <&jerith> | Ran 14 tests in 4.440 seconds, 14 successes, 0 failures |
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| 15:02 | <@celticminstrel> | ? |
| 15:02 | <&jerith> | My lua solutions to adventofcode 2015. |
| 15:03 | <&jerith> | Down from "Ran 14 tests in 82.956 seconds, 14 successes, 0 failures" |
| 15:05 | <&jerith> | Most of the improvement was from getting rid of piles of string manipulation in hot loops. |
| 15:08 | <~Vorntastic> | Oh, yeah, strings in lua are generally a bad idea. It's very aggressive with interning |
| 15:12 | <&jerith> | In one case I switched from `tostring(x) .. "," .. tostring(y)` to `x + y*1000` for keys in a giant table. |
| 15:12 | <&ToxicFrog> | Yeah, that'll do it |
| 15:13 | <&ToxicFrog> | Using numbers as table keys is very fast, using strings means they get interned and then the string pointer is used as the key |
| 15:13 | <&ToxicFrog> | So it's very fast if you're re-using a key but creating the string in the first place is expensive |
| 15:13 | <&jerith> | In another, I switched hashing libraries (from `md5` to `luagcrypt`) and compared raw bytes instead of converting to hex. |
| 15:14 | <&ToxicFrog> | (successive string concatenation is also expensive compared to appending string fragments to a table and then calling string.join() at the end) |
| 15:14 | <&jerith> | ToxicFrog: I was *rebuilding* the same keys all over the place, which was adding over a minute to total runtime. |
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| 15:15 | <&ToxicFrog> | Yep. |
| 15:18 | <&ToxicFrog> | (in circumstances like this I typically use a nested table keyed on [x][y] rather than composite keys, which is probably slower than x+y*1000 but faster than building string keys) |
| 15:19 | <&jerith> | If I'd skipped the string, I'd've probably gone with nested. |
| 15:22 | <&jerith> | But the output I need is "sum of all values in matrix" and rewriting that logic from "loop over `ipairs()` and add" to handle nested tables was more work than I wanted to put in. |
| 15:23 | <&ToxicFrog> | Fair |
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| 15:59 | <&jerith> | I'm hating lua less than I expected to, which is nice. |
| 16:03 | <&[R]> | How's that counting from 1 going? |
| 16:03 | <&jerith> | It'll never be my favourite language, but it's really quite pleasant to use given its niche. |
| 16:06 | <&jerith> | [R]: No problem at all, because all the tooling's designed around it. |
| 16:06 | <~Vornicus> | it's mixing that's the problem |
| 16:06 | <~Vornicus> | and ... okay I'll be honest I have no idea how they decided to use 1 when most of the languages you'll be embedding it in use 0 |
| 16:07 | <&jerith> | Probably because their niche is scripting stuff for non-programmers. |
| 16:07 | <&[R]> | Yeah... that aspect seems drunk |
| 16:08 | <~Vornicus> | (I use lua a lot lately. the things that annoy me most are global-default and "adjustment") |
| 16:09 | <&jerith> | Yeah, global-default is pretty bad. |
| 16:10 | <&jerith> | But I've installed luacheck and now emacs is full of angry underlines wherever I forget `local`. |
| 16:11 | <&jerith> | Aside from global-default, the thing that annoys me the most is the verbosity of function defs. |
| 16:22 | | Kindamoody|out is now known as Kindamoody |
| 17:09 | <&ToxicFrog> | How do you mean? |
| 17:09 | <&ToxicFrog> | And yeah, Lua is descended from Sol, a non-turning-complete language for data scientists; it inherited the 1-indexing from that. |
| 17:10 | <&ToxicFrog> | That said, IMO they should have switched to 0-indexing in Lua 4 or 5; those broke compatibility with everything anyways, after all. |
| 17:12 | <&ToxicFrog> | But yeah, function defs in Lua do not strike me as particularly verbose? |
| 17:14 | <&ToxicFrog> | `function` is only two characters longer than `(defn)` and doesn't need the shift key, after all~ |
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| 18:48 | <@celticminstrel> | I'm more surprised that Lua's the only major language using 1, honestly. |
| 18:49 | <@celticminstrel> | I think Pascal does use 1 by default but who uses Pascal anymore? |
| 19:08 | <&[R]> | VB does both |
| 19:08 | <&[R]> | Because MS canm |
| 19:08 | <&[R]> | Because MS can't be sane |
| 19:17 | <&McMartin> | BASIC was always like that, all the way back to Dartmouth |
| 19:18 | <&McMartin> | It's secretly 0 indexed but pretends very hard that it is 1-indexed. |
| 19:18 | <&McMartin> | Pascal lets you define arrays indexed by arbitrary enums, including any continuous integer range you want, IIRC. |
| 19:48 | <&jerith> | ToxicFrog: "function", "end", and "return" (if necessary) are all long enough that I usually can't call something with an inline lambda in one line. |
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| 20:24 | <&ToxicFrog> | jerith: oh, yeah |
| 20:24 | <@celticminstrel> | Yeah, IIRC Pascal lets you set the starting index to anything, but doesn't it default to 1 if you don't specify a start? |
| 20:25 | <@celticminstrel> | To be fair, my knowledge of Pascal is derived exclusively from example code in the old Macintosh Toolbox reference. I'ev never actually coded in Pascal myself. So, I could be wrong. |
| 20:26 | <&ToxicFrog> | I actually ended up defining something like: |
| 20:26 | <&ToxicFrog> | function f(src) return assert(loadstring('return function(' .. src:gsub(' => ', ') return ') .. ' end'))() end |
| 20:26 | <&ToxicFrog> | So that for stuff that doesn't need to close over its surroundings I can do f'x,y => x*y' or the like |
| 20:26 | <@celticminstrel> | Pfft |
| 20:26 | <&ToxicFrog> | You can extend that to closures using the debug API but I've never bothered |
| 20:26 | <@celticminstrel> | Nice hack |
| 20:28 | <@celticminstrel> | f[[x,y => x*y]] to make it look extra unique. |
| 20:28 | <@celticminstrel> | (Also useful if you need quotes in the lambda body.) |
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| 22:51 | < ErikMesoy> | Memtest found nothing wrong, I have kept getting occasional OOM browser errors, but I have narrowed it down since then and it semingly always happens when I have a twitter infinite scroll page (e.g. an account feed, but not a tweet) open for a while. |
| 22:51 | < ErikMesoy> | I guess that'll teach me not to look a twitter. :-) |
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| --- Log closed Sun Nov 29 00:00:42 2020 |