| --- Log opened Thu Apr 28 00:00:14 2016 |
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| 04:04 | < Harlow> | does anyone know what kind of regex you'd do for say translating something like rrrrtttoo to rrttoo r'(.)\1{2}', r'\1' |
| 04:04 | < Harlow> | is what im using, but it doesn't really work |
| 04:10 | <~Vornicus> | --like, you want each multiletter to appear twice exactly |
| 04:10 | <~Vornicus> | so aaaaaaaaaaaaaaaaaabbbbbbeeeeeeeeeeeeghhhhhhhhhhhhhhhhh would be aabbeeghh? |
| 04:10 | < Azash> | Vornicus: Based on the r'' strings he wants to replace each triple occurrence with a single |
| 04:10 | <~Vornicus> | azash - that's not what the example shows though |
| 04:11 | < Azash> | But that wouldn't change - yeah |
| 04:11 | < Azash> | Harlow: In natural language, what do you want to do? |
| 04:11 | | Turaiel is now known as Turaiel[Offline] |
| 04:12 | < Harlow> | Replace two or more occurrences of the same character with two occurrences. i.e. âexcitedddddâ to âexciteddâ |
| 04:12 | < Azash> | Ah |
| 04:13 | < Harlow> | if it has multiplicity it returns at most multiplicity 2 |
| 04:13 | < Azash> | s/(.)\1{2,}/\1\1/ should probably do it |
| 04:13 | < Azash> | Note the 2, instead of 2 |
| 04:14 | < Azash> | The comma turns it from "exactly 2" to "from 2 to (no upper bound)" |
| 04:15 | < Harlow> | Ah |
| 04:19 | < Harlow> | so Azash I'm doing words = map ( lambda word : re.sub ( r's/(.)\1{2,}', r'\1\1', word ), words ) # this is python words is a list of words, the regex does not actually effect the output |
| 04:34 | | * Azash doesn't know python very well |
| 04:35 | < [R]> | What's the \1 do in the search part of the search/replace? |
| 04:36 | <~Vornicus> | it's a backreference. "the first captured group" |
| 04:36 | <~Vornicus> | or should. |
| 04:36 | <~Vornicus> | Harlow: what's that s/ for? |
| 04:37 | < Azash> | [R]: \1 is a specific reference to the (.), as eg. .{3,} is just.. any set of 3 or more characters |
| 04:38 | < Harlow> | I think you sent me a sed command instead of regex, i tried r'(.)\1{2,}', r'\1\1' and it worked uh but without that sed command i don't think i would have got it |
| 04:38 | < Harlow> | thanks Azash |
| 04:38 | < Harlow> | :D |
| 04:39 | < [R]> | perl uses that notation as well IIRC |
| 04:39 | < Azash> | No worries |
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| 06:11 | | * simon_ opted in on a deal at his gym: 1 protein product/day for $15/month, but I have to show up every day and grab it. |
| 06:11 | < simon_> | but they also have energy drinks. |
| 06:12 | < simon_> | a co-worker lives next to a branch of this gym and basically just gets one energy drink every morning and either drinks it on that day or stashes it. |
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| 06:12 | < simon_> | I thought I'd do the same. but since I don't visit the gym more often than every other day, it's a bit annoying and I end up skipping the deal every other day. |
| 06:13 | < simon_> | then I realized, as long as I exercise close to midnight, I can grab two days worth of energy drinks, one before and one after midnight. :P |
| 06:13 | < simon_> | also, I have an abusive relationship to energy drinks. |
| 06:15 | < simon_> | this way I get them at a third of the price I normally would. |
| 06:16 | < simon_> | this co-worker who introduced me to the abuse used to grind caffeine pills and mix them with homemade club soda. |
| 06:16 | < simon_> | I don't think it gets cheaper than that. |
| 06:16 | < simon_> | (we work in finance, so I'm not really sure why we're so cheap about it.) |
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| 15:19 | < Natanial> | Hey |
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| 22:41 | <&Derakon> | Quick C++ check. What does this do? |
| 22:41 | <&Derakon> | class Universal : public CCameraBase<Universal> |
| 22:41 | <&Derakon> | It looks to me like it's saying "create a class named Universal, which descends from the templated CCameraBase class, with a template type of Universal". |
| 22:42 | <&McMartin> | Correct. |
| 22:42 | <&McMartin> | And yes, it's using itself as a template argument, and yes, that is legal. |
| 22:42 | <&Derakon> | Okay, thanks. |
| 22:43 | <&McMartin> | Template arguments in their first phase end up working like a slightly more lexical-analysis-aware preprocessor, and then the results are type-checked and built as usual. |
| 22:43 | | * McMartin is gesturing wildly in parts of this explanation; this is the kind of thing he consults catadroid about if the details matter >.> |
| 22:44 | <&Derakon> | Okay, so it turns out that CCameraBase is defined via |
| 22:44 | <&Derakon> | template <class U> class CCameraBase : public CDeviceBase<MM::Camera, U> |
| 22:44 | <&McMartin> | So it's forwarding that typename as the second template argument to CDeviceBase. |
| 22:44 | <&Derakon> | Hmm...I guess that's okay. |
| 22:45 | <&McMartin> | Are you getting error messages with lengths measured in actual kilobytes and trying to work out why here by any chance~ |
| 22:45 | <&Derakon> | Ultimately we're getting an error in the definition of the "Universal" class, where it defines a function |
| 22:45 | <&Derakon> | error: cannot initialize object parameter of type 'CDeviceBase<MM::Camera, Universal>' with an expression of type 'Universal' |
| 22:45 | <&McMartin> | Oh, hmmmm. |
| 22:46 | <&Derakon> | And no, the errors are not gigantic, so it's probably not a template problem, yes. :) |
| 22:46 | <&McMartin> | Does CDeviceBase have a U field in it by any chance. |
| 22:46 | <&McMartin> | Alternately: What is the line that is actually failing |
| 22:46 | <&Derakon> | template <class T, class U> class CDeviceBase : public T |
| 22:46 | <&Derakon> | And the failing line: |
| 22:46 | <&Derakon> | MM::MMTime GetCurrentTime() { return GetCurrentMMTime();} |
| 22:47 | <&McMartin> | That's interesting because it doesn't appear to refer to type U in there at any point. |
| 22:47 | <&Derakon> | No, it doesn't. |
| 22:48 | <&Derakon> | GetCurrentMMTime is defined in DeviceBase, incidentally, and returns an MMTime. |
| 22:48 | <&Derakon> | I suppose it might be significant that that function is the last declared function in the header? Everything else is member variables. |
| 22:48 | <&McMartin> | Are you compiling this with g++, clang, or MSVC |
| 22:48 | <&Derakon> | Wait, no, I lied. |
| 22:49 | <&Derakon> | This is, uh, clang, looks like. Our automated build tool. |
| 22:49 | <&Derakon> | Specifically, this is an email warning me that the OSX build is broken. |
| 22:49 | <&Derakon> | Windows build appears to be fine. |
| 22:49 | <&Derakon> | (Or at least I've gotten no email about it) |
| 22:50 | <&McMartin> | clang is stricter on some stuff but it also often has very lengthy explanatory messages |
| 22:50 | <&Derakon> | I'm tempted to just email the guy and say "hey you broke the build, fix it", but I'd like to understand how it's broken. |
| 22:50 | <&Derakon> | (Besides that he failed to #define ulong64 on Mac platforms, but that one was easy to figure out) |
| 22:50 | <&McMartin> | ... step 1 is to attempt a clean rebuild |
| 22:51 | <&Derakon> | Heh, fair enough. |
| 22:51 | <&McMartin> | Bug report: You should be #include-ing <cstdint> and using uint64_t |
| 22:51 | <&Derakon> | Well, wait, the automated build system should start from clean every time. |
| 22:51 | <&Derakon> | It certainly has the output of ./configure in the logs there. |
| 22:51 | <&McMartin> | Hm. |
| 22:51 | <&McMartin> | OK |
| 22:52 | <&McMartin> | This error is usually longer than what you quoted |
| 22:53 | <&Derakon> | Here: http://pastebin.com/d8XApqFc |
| 22:54 | <&Derakon> | If Universal descends from CDeviceBase then it ought to be a valid MMDevice... |
| 22:54 | <&McMartin> | Hum |
| 22:54 | <&Derakon> | ...I think. |
| 22:55 | <&McMartin> | OK we are in deep magic area here |
| 22:55 | <&McMartin> | My first theory here is that MM::Device has no direct relationship to CDeviceBase. |
| 22:56 | <&McMartin> | The other possibility is that there's some implicit coercion/constructor-calls going on that clang does not accept, but I thought those rules were fixed. |
| 22:56 | | * Derakon tries to build locally, gets an error that master.h was not found. |
| 22:57 | <&Derakon> | Oh, that's because I don't have the PVCAM libraries installed properly. |
| 22:57 | <&Derakon> | You know what, don't worry about it. |
| 22:57 | <&Derakon> | I'll just tell him "hey, it doesn't work, fix it". |
| 22:57 | <&Derakon> | Thanks for your assistance. |
| 22:58 | <&McMartin> | I would also double-check windows-build results and look for warnings. |
| 22:58 | <&McMartin> | The failures in PVCAMAdapter are very surprising to me |
| 22:58 | <&McMartin> | If they are brand-new and Mac-only. |
| 22:59 | <&Derakon> | Alas, I no longer have access to the build server, so I'm basically read-only here. And there's no notifications for successful builds. |
| 23:00 | <&Derakon> | ("no longer" because we're still using the UCSF build server and I don't work there any more) |
| 23:02 | <&McMartin> | The ultimate resolution will be relevant to my interests, so I hope you can share that once it's sorted |
| 23:02 | | crystalclaw is now known as crystalclaw|AFK |
| 23:03 | <&Derakon> | Sure, this is all public code. |
| 23:04 | <&Derakon> | Meanwhile, I just wrote up a little test of some functions to compare speeds. |
| 23:05 | <&Derakon> | First three tests show an order-of-magnitude difference between the two functions. |
| 23:05 | <&Derakon> | Fourth test shows them both taking 0s, presumably because the JIT compiler optimized them. |
| 23:05 | <&Derakon> | Hooray for Java~ |
| 23:06 | <&McMartin> | For all the shit Java takes, Java's JIT was the first widely available Really Good JIT. |
| 23:06 | <&McMartin> | I won't gainsay Sun's engineers. |
| 23:06 | <&McMartin> | Their businesspeople, well... |
| 23:19 | <&Derakon> | Okay, $coworker suggests that the ulong64 error invalidated the type of Universal, such that it was not a valid MMDevice, thereby causing cascading errors when later parts of the code tried to treat it as such. |
| 23:19 | <&Derakon> | Sounds plausible to me, anyway. |
| 23:20 | <&McMartin> | If fixing the ulong64 error makes all the errors go away, that'd check out, to be sure |
| 23:27 | | * Derakon vanishes aetherwards. |
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| --- Log closed Fri Apr 29 00:00:29 2016 |