| --- Log opened Tue Aug 12 00:00:00 2008 |
| 00:01 | | AnnoDomini [AnnoDomini@Nightstar-29569.neoplus.adsl.tpnet.pl] has quit [Quit: Astro Cat will play for you... the Symphony of Space.] |
| 00:26 | <@MyCatVerbs> | ToxicFrog: that'd have to be something implementation-specific. Or you could just (define ei exact->inexact) and use that to coerce for printing's sake. |
| 00:29 | <@ToxicFrog> | Yes, it's implementation specific; you're the one conversant with drscheme, hence why I ask. |
| 00:38 | <@MyCatVerbs> | Er. I'm not *very* conversant with drscheme. |
| 00:39 | <@MyCatVerbs> | Sorry for not being able to help. |
| 00:40 | <@MyCatVerbs> | Hell on a stick, I cannot type for shit right now. |
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| 00:51 | <@gnolam> | Hmm. I have vague memories of the existence of some kind of pretty print function in Scheme. |
| 00:51 | <@gnolam> | Can't for the life of me remember what it was called though. |
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| 07:57 | <@McMartin> | Ahahahahaha |
| 07:57 | <@McMartin> | "Putting nice UI touches in research code is like folding toilet paper into origami just before you wipe your ass with it." |
| 08:49 | | You're now known as TheWatcher |
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| 09:58 | <@Reiver> | gnolam: That is really quite impressive. Are you able to do heightfields on the island too? |
| 09:59 | <@Reiver> | And do you have any control over the shape generated? |
| 10:11 | <@gnolam> | Thanks. :) |
| 10:11 | <@gnolam> | I'm able to, but I only need a 2D outline and visualization in the form of a nautical chart. |
| 10:11 | <@gnolam> | And no /real/ control over the shape. |
| 10:13 | <@gnolam> | I do some futzing with the values of the first midpoint and corners. I guess you could get more control over it, but meh. Work. |
| 10:17 | | * Reiver nods. |
| 10:17 | <@Reiver> | It is very nifty. |
| 10:17 | | * Reiver ponders. Can you, say, put in a specified random seed and get a repeatable island? |
| 10:17 | <@Reiver> | (I'm assuming it used a random seed to generate itself initially. If not, I stand corrected.) |
| 10:20 | <@gnolam> | Yep. That's how it works. |
| 10:23 | <@Reiver> | What's it run in/as? |
| 10:26 | <@gnolam> | ? |
| 10:27 | <@Reiver> | What language, is it able to be standalone? |
| 10:30 | <@gnolam> | Ah. |
| 10:30 | <@gnolam> | C++ and yes. |
| 10:31 | <@gnolam> | (Well, as soon as I clean it up) |
| 10:33 | <@Reiver> | That'd be awesome. |
| 10:33 | <@Reiver> | Let me know if/when you do so? :) |
| 10:33 | <@gnolam> | Oki. :) |
| 10:34 | <@Reiver> | (I tend to need to do a lot of mapmaking. My biggest failing in such is my inability to come up with the Initial Coastline.) |
| 10:38 | <@gnolam> | GMing? |
| 10:52 | <@TheWatcher> | is svnbook.red-bean.com/en/1.4/index.html unresponsive for anyone else? |
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| 13:08 | <@ToxicFrog> | TheWatcher: timeout |
| 13:18 | <@TheWatcher> | Meh. Thanks |
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| 16:42 | <@ToxicFrog> | > (mul 7 5) |
| 16:42 | <@ToxicFrog> | 63 |
| 16:42 | <@ToxicFrog> | I think there's a bug in my code. |
| 16:43 | <@AnnoDomini> | Hmmmm. |
| 16:43 | <@AnnoDomini> | I'd say so. |
| 16:43 | <@EvilDarkLord> | I think your code needs a hug. |
| 16:43 | <+Consul> | Is that base 7 or 8? |
| 16:43 | <@ToxicFrog> | 10. |
| 16:43 | <+Consul> | I was making a joke, but okay. :-P |
| 16:45 | <+Consul> | Albeit a poor one. |
| 16:47 | <+Consul> | Now I'm off to pick up a mess of vinyl records someone's giving away. BBL |
| 16:47 | <@ToxicFrog> | Eek. 1.19 is intimidating. |
| 16:54 | <@ToxicFrog> | I think p` = q` = 1 |
| 16:55 | <@ToxicFrog> | ...the code, however, disagrees |
| 16:55 | <@ToxicFrog> | Oh, wait |
| 16:56 | <@ToxicFrog> | starting with (0,1) |
| 17:04 | <@ToxicFrog> | p' <- q^2 + p^2 |
| 17:05 | <@ToxicFrog> | q' <- 2pq + q^2 |
| 17:08 | <@ToxicFrog> | ...I cannot type gcd in less than three tries. |
| 17:08 | <@ToxicFrog> | It comes out as gdb. |
| 17:11 | <@ToxicFrog> | ...ok, I don't get 1.20 at all. |
| 17:11 | | * ToxicFrog casts about for people conversant with SICP |
| 17:11 | | * jerith is a little conversant. |
| 17:12 | <@ToxicFrog> | Oh, nvm |
| 17:12 | <@ToxicFrog> | Figured it |
| 17:13 | <@ToxicFrog> | And the answer is "twice as many times" |
| 17:14 | <@AnnoDomini> | Plan B: Twice as much dynamite. |
| 17:15 | < jerith> | Plan C: Antimatter. |
| 17:24 | <@ToxicFrog> | Pfft |
| 17:24 | <@ToxicFrog> | "In testing primality of very large numbers chosen at random, the chance of stumbling upon a value that fools the Fermat test is less than the chance that cosmic radiation will cause the computer to make an error in carrying out a ``correct'' algorithm. Considering an algorithm to be inadequate for the first reason but not for the second illustrates the difference between mathematics and engineering." |
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| 17:26 | | * TheWatcher debates between virtual ~vfsImplementation() = 0; and having to do vfsImplementation::vfsImplementation() { }, or just doing virtual ~vfsImplementation() { } |
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| 17:31 | <@ToxicFrog> | TheWatcher: if you do the =0, can't you omit the {}? Doesn't the first mean "no implementation provided", and the second "implementation provided which does nothing"? |
| 17:33 | <@TheWatcher> | According to the stuff I've been reading, even if you do the =0 you need the {} as " the destructor must still be defined (even if it's empty)" because derived class' destructors must be able to call the base class' destructor. |
| 17:34 | <@TheWatcher> | Of course, I've yet to consult Stroustrup on the issue... *goes to get the fork-lift* |
| 17:35 | <@TheWatcher> | if you do need to do the { } anyway, I can't see any point in doing the = 0, really |
| 17:35 | <@ToxicFrog> | Yeah |
| 17:36 | | EvilDarkLord is now known as Zenon |
| 17:36 | <@ToxicFrog> | For that matter, I'm not sure that's legal; it seems like it should be: virtual ~vsfImplementation(); vfsImplementation::vfsImplementation() { } |
| 17:36 | <@ToxicFrog> | (but I havent' tested this) |
| 17:36 | <@ToxicFrog> | Woo, higher-order functions |
| 17:37 | | * TheWatcher resorts to the Test Code |
| 17:43 | <@TheWatcher> | yep, if I just do virtual ~TestClassA() = 0; I get a load of "undefined reference to `TestClassA::~TestClassA()'" whereas virtual ~TestClassA() { /* do nothing */ } works |
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| 17:45 | | * TheWatcher stabs Bjarne Stroustrup in the face with a rusty spoon. |
| 17:54 | <@ToxicFrog> | > (integral cube 0 1 10000) |
| 17:54 | <@ToxicFrog> | 7501/30000 |
| 17:54 | <@ToxicFrog> | Woot |
| 17:54 | <@ToxicFrog> | TheWatcher: so drop the " = 0" |
| 17:54 | <@ToxicFrog> | Just like a normal method declaration |
| 17:55 | <@ToxicFrog> | Unless you're after having the whole thing in the header? |
| 17:56 | <@TheWatcher> | I may as well, considering that otherwise it's all pure virtuals |
| 17:57 | < Vornicus> | ...doing calculus in scheme? |
| 18:11 | <@McMartin> | The reason for doing the =0 and the {} at the same time is so that you can have it be the only virtual function if you want RTTI to work |
| 18:11 | <@McMartin> | Er, sorry |
| 18:11 | <@McMartin> | If you want it to be noninstantiatable, but if it has no other virtual functions that you can make pure. |
| 18:11 | <@McMartin> | Since we couldn't possibly, you know, have a type qualifier like "abstract" or something. |
| 18:11 | <@McMartin> | Nor can we detect this problem until frickin' link time. |
| 18:26 | <@ToxicFrog> | Vornicus: yes. |
| 18:27 | <@ToxicFrog> | The introductory exercises concerning higher-order functions involve calculating definite integrals. |
| 18:27 | | * McMartin also takes this moment to froth at the rules for virtuality of implicit destructors, to say nothing of the fact that a class can by default have incorrect code automatically generated. |
| 18:28 | <@McMartin> | Given the goals, it's sensible, but argh. |
| 18:28 | <@TheWatcher> | Indeed, argh |
| 18:30 | < jerith> | Quite, argh. |
| 19:27 | < Vornicus> | Very arg. |
| 19:27 | < Vornicus> | h. |
| 19:28 | < Vornicus> | AH. That's what DF needs. |
| 19:28 | < Vornicus> | A way of seeing everything 'at ground level' |
| 19:29 | < Vornicus> | Also, a way of telling without individually querying each square whether something is farmable. |
| 19:42 | <@ToxicFrog> | The latter is semi-doable. |
| 19:42 | <@ToxicFrog> | b-p-(resize)-pan over the area you're interested in. |
| 19:44 | < Vornicus> | No, see, that's the problem - that means when I'm trying to fit in a farm I have to query every square to find a suitable location to farm. |
| 19:45 | < Vornicus> | (I'm farming outdoors because this civilization came with no seeds in the embark) |
| 20:19 | <@ToxicFrog> | So...you're looking for free soil on the surface and hoping plants will spring up on it? |
| 20:20 | <@ToxicFrog> | If you don't have seeds, deploying a farm plot will do nothing anyways. |
| 20:21 | <@ToxicFrog> | Or do you mean that you've collected seeds from outdoors and now need to grow them in sunlight? |
| 20:24 | <@ToxicFrog> | In that case, just pick the location that best fits the fortress and irrigate, or use skylights |
| 20:24 | <@ToxicFrog> | You don't need to grow on ground level, just exposed to the sky. |
| 20:32 | < Vornicus> | The latter, and irrigation is difficult because I don't have pumps yet. |
| 20:37 | <@ToxicFrog> | Aah. And you don't have a soil layer you can dig in? |
| 20:38 | < Vornicus> | it's waaaay over there. This is kind of an odd location - there's soil to the east, and a river to the north in a canyon. |
| 20:42 | <@ToxicFrog> | In that case you basically have two options: irrigate the stone near the river, or farm in the soil |
| 20:44 | | * TheWatcher pokes his brainmeats, tries to remember if he's ever seen a portable c or c++ lib that will give him the absolute location of a file given the current dir and a relative path, of if he'll have to write one |
| 21:01 | | * Vornicus posts some suggestions to the DF forum. |
| 21:05 | <@TheWatcher> | bleh, i'm going to have to write this myself, I bet. |
| 21:06 | < Vornicus> | man, I love the DF forum. |
| 21:06 | < Vornicus> | in response to a suggestion of concrete: "F that crap, what kind of pansy-assed sky-kissing grass-eating stone-hating sunfairy are you?" |
| 21:13 | < Shoukanjuu> | >_> |
| 21:17 | | Zenon is now known as EvilDarkLord |
| 21:33 | < Vornicus> | "I heartily support this, so long as Toady includes orbiting bodies in world gen, so I can build my scaffolding to the Moon, and claim it in the name of the Mountainhomes." |
| 21:50 | | Mojo1978 [~Mojo1978@Nightstar-13370.hsi.ish.de] has joined #code |
| 22:10 | | * ToxicFrog rocks out, implements (sigma) and (phi) |
| 22:11 | < Vornicus> | phi? |
| 22:11 | < Vornicus> | product is usually capital pi |
| 22:11 | <@ToxicFrog> | Well I know that now |
| 22:12 | <@ToxicFrog> | But, not knowing that at the time, I pulled a random greek letter starting with P out of the air. |
| 22:13 | <@ToxicFrog> | (also, calling it 'pi' is confusing) |
| 22:20 | <@AnnoDomini> | Speaking of Pi, where is Pi? |
| 22:21 | <@ToxicFrog> | Why does scheme distinguish between let and local define? |
| 22:27 | <@MyCatVerbs> | Dunno. |
| 22:28 | <@AnnoDomini> | A mystery of the ages. |
| 22:28 | <@MyCatVerbs> | Ask in #scheme on freenode, they're freakishly friendly in there, so you might actually get a sane answer to that one. |
| 22:28 | <@MyCatVerbs> | What's the distinction, anyway? I didn't even know there was one. |
| 22:29 | <@ToxicFrog> | SICP says "the distinction would make your head explode if we explained it here, so we'll cover it much later in chapter 4" |
| 22:29 | <@ToxicFrog> | "but in the meantime, trust us that you want to use let for local non-procedures, not define" |
| 22:29 | | * MyCatVerbs giggles. |
| 22:32 | | You're now known as TheWatcher[T-2] |
| 22:34 | | You're now known as TheWatcher[zZzZ] |
| 23:11 | < Vornicus> | "Dwarfs were built for underground. They require so little oxygen, they can get it from the mold in their beard." |
| 23:11 | < Vornicus> | Pi had a massive computer failure. |
| 23:11 | <@AnnoDomini> | Uncool. |
| 23:14 | <@gnolam> | ... aren't molds usually aerobic? |
| 23:15 | < Vornicus> | I don't know. |
| 23:31 | <@ToxicFrog> | Found it by reading ahead in scheme. |
| 23:31 | <@ToxicFrog> | Er, in SICP. |
| 23:32 | <@ToxicFrog> | Not sure I believe it, though ?? |
| 23:33 | <@ToxicFrog> | (short form: mutual recursion works only for code, not data - (define (x) (y)) (define (y) (x)) is legal (albeit unwise), whereas (define b (+ 2 a)) (define a 5) is an error) |
| 23:33 | <@ToxicFrog> | (let doesn't solve this, though, it just makes it impossible) |
| 23:48 | <@ToxicFrog> | Hmm. Ok, it's actually more subtle than that. |
| 23:48 | <@ToxicFrog> | let binds all the lvalues to their rvalues resolved against the containing scope. |
| 23:48 | <@ToxicFrog> | define, on the other hand... |
| 23:49 | <@ToxicFrog> | First all names defined in that scope are reserved. |
| 23:49 | <@ToxicFrog> | Then each define is processed in sequence. |
| 23:49 | <@ToxicFrog> | They are resolved against their containing scope. |
| 23:50 | <@ToxicFrog> | If one of them attempts to make use of a variable which has been reserved but not yet defined, it errors. |
| --- Log closed Wed Aug 13 00:00:10 2008 |