| --- Log opened Fri Dec 12 00:00:57 2014 |
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| 02:21 | | * celticminstrel started to rewrite the massive action-handling function and is now starting to think about abandoning the attempt. |
| 02:43 | | * ToxicFrog pushes an experiental branch of emufun that supports per-directory metadata cache files |
| 03:25 | | * celticminstrel starts over with slightly less grandiose plans - just split the function up without changing anything. |
| 04:05 | <&ToxicFrog> | Load time for /orias/media/video/tv goes from ~10 seconds to less than half a second \o/ |
| 04:38 | <~Vornicus> | hm. that new bpg thing doesn't work on mac chrome yet |
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| 07:59 | <@celticminstrel> | Okay, so, I have things that do stuff when (age % x == 0), for various values of x. When increasing age by more than 1 in a single jump, I'd like to know how many such boundaries were skipped over, for a given x. |
| 08:02 | < abudhabi> | A simple for loop with an if statement inside? |
| 08:02 | <@celticminstrel> | Are you suggesting I just increase it by 1 as normal? |
| 08:05 | < abudhabi> | Yes? You increase it by 1 and check every time you do if you've crossed a threshold, until you've reached the number you want to increase age by. |
| 08:05 | < abudhabi> | Are you looking for something other than a brute force approach? |
| 08:05 | <@celticminstrel> | I was hoping for a method that doesn't involve a loop. |
| 08:06 | <@celticminstrel> | I need to check it for several values of x, and I don't even know ahead of time what all the values are. |
| 08:06 | <@celticminstrel> | It could be sufficient to merely know if at least one boundary was crossed (per value of x). |
| 08:07 | < abudhabi> | If the increase is greater or equal x, that's guaranteed at least one boundary crossing. For lower values, you'd have to check more in-depth. |
| 08:07 | <@celticminstrel> | Hmm. |
| 08:08 | < abudhabi> | Are you sure you're not overoptimizing this? |
| 08:08 | < abudhabi> | Is age a large number? |
| 08:08 | <@celticminstrel> | It could be. |
| 08:09 | < abudhabi> | How large? |
| 08:10 | <@celticminstrel> | Uhh, there's theoretically no limit to how large it can get short of integral limits (which is quite high, since it's an unsigned long). That said, in practice, I don't think it's likely for integral limits to be reached; but I wouldn't be too surprised at getting 5-6 digits. |
| 08:10 | <@celticminstrel> | It depends on a lot of stuff, of course. |
| 08:10 | <@celticminstrel> | It's basically your turn counter, so it's incremented constantly. |
| 08:11 | <@celticminstrel> | If I divide by x, I think I'd get an answer that might be off by one, right? |
| 08:11 | <@celticminstrel> | Divide the increase by x, that is. |
| 08:12 | <@celticminstrel> | Or wait, was it the other way around... |
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| 08:12 | <@celticminstrel> | Ah, no, divide the increase by x. |
| 08:12 | | * celticminstrel probably is over-optimizing, really. |
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| 13:38 | <@Azash> | "The first Lisp interpreter was implemented by McCarthy with the help of the LORD" |
| 14:34 | <@iospace> | LORD of parens? :P |
| 14:34 | | celmin|sleep is now known as celticminstrel |
| 14:46 | <&McMartin> | Heh. You know the story about the parens, right? |
| 14:48 | <@froztbyte> | are they the arms of our dark lord cthulhu reaching out to hold you? |
| 14:52 | <@iospace> | McMartin: why don't you tell us anyway :P |
| 14:53 | <&McMartin> | They were intending to design a "real" grammar for it, but they had work to do, so they basically said "let's just type the ASTs in directly for now and we'll get back to it" |
| 14:53 | <&McMartin> | And then got hooked |
| 14:53 | <@iospace> | ASTs? |
| 14:53 | <&McMartin> | Abstract Syntax Trees |
| 14:53 | <@iospace> | ah |
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| 15:44 | <@celticminstrel> | Stupid fingers, stop typing minus instead of equals. :/ |
| 16:13 | | * celticminstrel blinks. |
| 16:16 | <&McMartin> | Heh. If I turn on the "positional keyboard map" in my C64 emulator, the = key *is* minus. |
| 16:16 | <@celticminstrel> | Okay, so... I add one line to ensure the background textures are (re)created after the dialog window is created, and now the dialog alternates between itself and garbage... but then I closed and reopened it ant it worked perfectly, and now it doesn't anymore... |
| 16:17 | <@celticminstrel> | ...and now it's perfect. |
| 16:17 | <&McMartin> | So it works every other time, or...? |
| 16:17 | <@celticminstrel> | I'm not sure. |
| 16:17 | <@celticminstrel> | It definitely doesn't work the first time a dialog is opened. |
| 16:18 | <@celticminstrel> | Hm, it seems to start working if I activate another program, then reopen the same dialog... :S |
| 16:19 | <@celticminstrel> | Prior to introducing that one line, it would alternate between normal and just background texture. |
| 16:20 | <@celticminstrel> | (The line is a call to a function that rebuilds the background textures.) |
| 16:33 | | * celticminstrel blinks. |
| 16:33 | <@celticminstrel> | Just now I had a button hiliting itself until I switched out. |
| 16:34 | <@celticminstrel> | As if it was remembering the state when the last dialog closed... though that button shouldn't've been hilited... |
| 16:35 | | * celticminstrel suspects something is somehow not getting initialized... |
| 16:58 | | * celticminstrel blinks. |
| 16:58 | <@celticminstrel> | Okay, I fiddled with it a bit by just reordering a few things, and suddenly it works? Or is it a fluke... |
| 16:58 | <@celticminstrel> | Well, it doesn't seem to be a fluke. |
| 17:03 | <@celticminstrel> | Seemingly the fix is to do the initial draw before making the window visible. |
| 17:06 | <@celticminstrel> | There's still the glitch where the dialog is momentarily drawn to the main window... |
| 17:10 | <@iospace> | I hate PL/SQL |
| 17:10 | <@iospace> | I really do |
| 17:13 | | * McMartin blinks |
| 17:13 | <&McMartin> | My brain is still in a retro mode |
| 17:13 | <&McMartin> | I read that as some kind of horrifying hybrid of PL/I and SQL |
| 17:16 | <@iospace> | :P |
| 17:16 | <@iospace> | it's oracle shit |
| 17:16 | <&McMartin> | Yeah, looking it up now on wiki |
| 17:17 | <&McMartin> | Syntax inspired by Ada |
| 17:17 | <&McMartin> | I'd make the usual warding gestures but I've seen decent Ada code and I have to admit they won the war =/ |
| 17:17 | <@TheWatcher> | Tautology Alert: Oracle Shit. |
| 17:17 | <@iospace> | like, this entire script- well yes TheWatcher- can be written in Python and achieve a lot faster response time |
| 17:20 | | * McMartin fingertappity |
| 17:20 | <&McMartin> | I'd like an excuse to write something substantial in Go, but I have no real excuses to do so |
| 17:21 | <&ToxicFrog> | McMartin: which war? |
| 17:21 | <&McMartin> | Ada's idea of how modules should work is very obviously a precursor to the Java/C# systems. |
| 17:21 | <&McMartin> | Like, after Java Ada doesn't even look verbose, just inconveniently low-level |
| 17:26 | <@celticminstrel> | ... why did I have (x == true ? false : true). |
| 17:27 | <@TheWatcher> | !aclue. |
| 17:28 | <@celticminstrel> | Me neither. |
| 17:28 | <&McMartin> | It's clearly formed from a thought and then directly represented |
| 17:28 | <&McMartin> | Let's go with "avoiding premature optimization"~ |
| 17:29 | <@celticminstrel> | Actually, it's probably lazy translation or something. |
| 17:29 | <@celticminstrel> | I think originally it might've been done because C did not have a bool type. |
| 17:29 | <@celticminstrel> | (And I think we're talking about pre-ANSI C, too.) |
| 17:30 | <&McMartin> | C's "everything has a bool context and it means '!= 0'" goes back to K&R, though. |
| 17:30 | <@celticminstrel> | Yeah, well, maybe he wanted to be "safe" or something? |
| 17:30 | <&McMartin> | I guess if it's from C to something else they might have done that, but "x==true" implies x has a boolean form and thus can just be x. |
| 17:31 | <@celticminstrel> | The original would've either had 1 and 0 or TRUE and FALSE. I dunno which. |
| 17:31 | | * McMartin nods. |
| 17:31 | <&McMartin> | The latter is more likely for a result like this |
| 17:31 | <&McMartin> | Particularly for entertaining cases where TRUE is not 1 >_< |
| 17:31 | <@celticminstrel> | I think TRUE was defined in one of the Mac toolbox headers or something. |
| 17:32 | <&McMartin> | Windows has one too. |
| 17:32 | <@celticminstrel> | Make sense, I suppose. |
| 17:32 | <&McMartin> | But it's not uncommon for the equivalent of (int)(1 == 1) to be -1. |
| 17:34 | <@celticminstrel> | In other news, strict enums are pretty nice. They allow me to force the use of enum constants where they're relevant, which I had no way to do before. |
| 17:34 | <@celticminstrel> | Thus improving readability. |
| 17:35 | <&McMartin> | Pascal: gettin' the last laugh |
| 17:35 | <@celticminstrel> | Hm? |
| 17:35 | <&McMartin> | Oh. IIRC Pascal enumerated types also worked like that |
| 17:35 | <@celticminstrel> | Ah. |
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| 17:37 | | * Thalass idly ponders The Machine |
| 17:42 | <@Thalass> | http://www.technologyreview.com/news/533066/hp-will-release-a-revolutionary-new- operating-system-in-2015/ |
| 17:47 | | * iospace noogies Thalass |
| 17:48 | <@Thalass> | aie! |
| 17:48 | <@Thalass> | I just heart memristors. I would suffer through dealing with HP if it meant a linux machine with memristor hardware. |
| 17:52 | <@Thalass> | anyway slep |
| 17:58 | <@celticminstrel> | Hm, "x ? n : 0" is equivalent to x * n... |
| 18:05 | <&McMartin> | Only if n is sharply constrained to 0 and 1. |
| 18:08 | <@celticminstrel> | Don't you mean if x is constrained? |
| 18:08 | <&McMartin> | Er |
| 18:08 | <&McMartin> | Yes |
| 18:08 | <@celticminstrel> | Well, it's a bool, I think that counts. |
| 18:09 | <&McMartin> | As noted above, make sure your bools aren't signed. |
| 18:09 | <@celticminstrel> | I'm pretty sure casting to bool restricts it to 0 or 1... |
| 18:10 | <@celticminstrel> | You'd have to do fancier stuff to get a bool with some other value. |
| 18:10 | <@celticminstrel> | Like unions. |
| 18:10 | <@celticminstrel> | Anyway, I'm fairly sure I only ever assign true or false to x. |
| 18:13 | <&McMartin> | Yeah, I'm saying "check, because the logical other value for boolean true is -1" |
| 18:13 | <&McMartin> | The last language I used where that came up that was true, but to be fair that language was Commodore BASIC |
| 18:13 | <@celticminstrel> | And I'm saying I don't think C++ allows this normally. |
| 18:15 | <&McMartin> | Just check. gcc at least does render it as 1. |
| 18:15 | <&McMartin> | *checked |
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| 20:30 | < Vorntastic> | So my coworker has found himself in a situation where he has a big javascript object and wishes to ask questions about it that look vaguely like sql queries. |
| 20:42 | <@celticminstrel> | ...fun? |
| 20:43 | < Vorntastic> | I'm not sure whether to call him silly, explain map filter & reduce, or... |
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| 21:24 | | * Derakon readsup. |
| 21:24 | <&Derakon> | If you're getting cute about auto-casting booleans into numbers, then you probably have a bug somewhere in your code. |
| 21:24 | <&Derakon> | I've gotten tripped up by boolean conversion rules in many different languages. |
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| 22:03 | <@celticminstrel> | ...it looks odd, but apparently ((a<x||a>y)&&(a<u||a>v)) is true if a is in neither range [x,y] nor range [u,v]. |
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| 22:18 | <@gnolam> | It only looks odd because there are no spaces in there.~ |
| 22:18 | <&McMartin> | Yeah, that's pretty straightforward. |
| 22:18 | <@celticminstrel> | Eh, it looks odd to me. |
| 22:19 | | * celticminstrel has spaces in the actual situation. |
| 22:22 | <@celticminstrel> | Making these enums strict has a tendency to really propagate throughout everywhere. >_> |
| 22:23 | <&McMartin> | It's like const only more so |
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| 23:22 | <@Azash> | âI thank Heaven no one has been able to add significant value to their Puppet deployments with an afternoonâs worth of perl scripting.â |
| 23:36 | <@celticminstrel> | Finally finished propagating. |
| 23:36 | <@celticminstrel> | Well, almost. Link error. |
| 23:46 | <@Azash> | http://www.technologyreview.com/news/533066/hp-will-release-a-revolutionary-new- operating-system-in-2015/ |
| --- Log closed Sat Dec 13 00:00:13 2014 |