| --- Log opened Thu Mar 08 00:00:36 2018 |
| 00:01 | <&McMartin> | Oh, wiki, except it's not "oh, wiki" |
| 00:01 | <&McMartin> | "This article is about the video codec. For the Star Wars character, see..." |
| 00:01 | <&McMartin> | ... turns out the codec was in fact named for the Star Wars character |
| 00:02 | <&McMartin> | ""Vorbis" is named after a Discworld character, Exquisitor Vorbis in Small Gods by Terry Pratchett.[9] The Ogg format, however, is not named after Nanny Ogg, another Discworld character; the name is in fact derived from "ogging", jargon that arose in the computer game Netrek." |
| 00:02 | <&ToxicFrog> | I've played netrek, but have no idea what ogging is |
| 00:03 | <&McMartin> | The wiki page for netrek says it's their name for some kind of kamikaze attack |
| 00:03 | <&McMartin> | "A player obtains "kills" either by killing an enemy ship or by bombing enemy armies. The number of kills decides how many armies a player's ship can carry. The player's kill count resets back to 0 each time their ship is destroyed, requiring them to obtain more kills before they can carry armies and capture planets. Consequently, people with 2 or more kills are often targeted for "ogging" (a kind of |
| 00:03 | <&McMartin> | kamikaze attack) just to remove the threat of them carrying armies." |
| 00:05 | <&McMartin> | This seems to be the source: http://www.netrek.org/about/akira-history-of-ogg.php |
| 00:06 | <&McMartin> | "The process of cloaking and appearing adjacent to enemy while firing torps and tractoring on to him." |
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| 06:22 | <&[R]> | TIL: attempting to replace libc.so on a 3.x system with a libc from a 4.x system will cause an immediate crash of some sort, I am uncertain if the initrd replaced the new libc with a working version, or if the copy failed immediately but rebooting has the working libc in /lib/libc.so.6 |
| 06:22 | <&[R]> | Things I should've done first: run the new libc directly |
| 06:23 | <&[R]> | Since it spews an error about being unable to dlopen() __vdso_time which should've clued me into the fact that the kernel was too old. |
| 06:30 | <&[R]> | (For the curious, the update system on that system is broken.) |
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| 11:31 | <@mac> | Roll 1d100. If you get a number <= k, stop, otherwise, roll again. What is the average number of rolls required, as a function of k? |
| 11:32 | <@mac> | The obvious answer is '100/k', but I'm not sure that's right. |
| 11:33 | < simon_> | mac, https://topps.diku.dk/torbenm/troll.msp |
| 11:34 | <@mac> | simon_: I have no idea how to express 'roll until you get less than k' in that. |
| 11:39 | < Vornlicious> | That is correct |
| 11:40 | < Vornlicious> | https://en.wikipedia.org/wiki/Geometric_distribution |
| 11:41 | < Vornlicious> | The median is harder. |
| 11:44 | <@mac> | Vornlicious: Danke. |
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| 15:07 | <@ErikMesoy> | Monte carlo testing indicates mean is indeed 100/k. Median shows up as 1 for k down to 51, 2 for k 50..30, 3 for k 29..21, 4 for k 20..16, 5 for k 15..13, and at the low end turns into (k:median) 10:7, 9:8, 8:9, 7:10, 6:12, 5:14, 4:17, 3:23, 2:35. I don't recognize this pattern, but it looks vaguely like 70/k |
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| 20:47 | < Vornicus> | http://nodesource.com/blog/is-guy-fieri-in-your-node-js-packages/ |
| 20:48 | <@gnolam> | Who's Guy Fieri? |
| 20:49 | <&McMartin> | just this Guy you know? |
| 20:49 | <&McMartin> | Wiki tells me that he's associated with the Food Network. |
| 20:49 | < Vornicus> | Guy Fieri is the host of a show called Diners, Drive-Ins and Dives, where he goes to various greasy spoons throughout america |
| 20:50 | < Vornicus> | He wears sunglasses on the back of his head, has frosted tips, and says (among other things) "Welcome to Flavortown" |
| 20:50 | <@ErikMesoy> | http://knowyourmeme.com/photos/1336704-guy-fieri |
| 20:52 | <@abudhabi> | The pandragon crits! Only an interpretive dance can save you now! |
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| 23:31 | <&[R]> | <CSharpIsDull> i had the weirdest C# bug today. I had a string class which I filled with a db retrieved string, like "21", and then used this string to insert into another. |
| 23:31 | <&[R]> | <CSharpIsDull> string shareID=getTHeShareID(); |
| 23:31 | <&[R]> | <CSharpIsDull> string SomeStringDeepInAClass = "S" + shareID" + somethingElse; |
| 23:31 | <&[R]> | <CSharpIsDull> I'll be damned if all the output stuffed into SomeStringDeep got the LAST setting of shareID. As if it stored the OBJECT in the string, not the object's contents!??! |
| 23:31 | <&[R]> | ^ that seems insane |
| 23:32 | <&McMartin> | "When is string interpolation computed/recalculated" is a thing that if you can worry about it, you have to. |
| 23:33 | <&McMartin> | My experience with that is in Inform 7, not C#, but certain things embedded in strings there are basically "call this function at print time and embed the string it returns" |
| 23:33 | <&McMartin> | This is not at all an unreasonable feature, but you have to know that's what you're doing. |
| 23:34 | <&[R]> | That seems like a bunch of work that'd be massively more confusing than beneficial |
| 23:34 | <&McMartin> | Inform 7 is a domain-specific language for text adventures, where up-to-date descriptions of the current world state are usually precisely what you want. |
| 23:35 | <&McMartin> | (And also where the lifetime of any given interpolated string literal is "it is created, handed directly to I/O, and then destroyed") |
| 23:35 | <&McMartin> | *is usually |
| 23:35 | <&McMartin> | But, e.g., you would set the header text to "Score: [score] Turns: [turns]" |
| 23:35 | <&McMartin> | Once |
| 23:35 | <&McMartin> | And they'd update as needed from there on out. |
| 23:35 | <&[R]> | Right, but not something you'd expect as default in a general purpose language |
| 23:36 | <&McMartin> | I have no reason to believe that the person quoting is using default behavior~ |
| 23:36 | <&McMartin> | a priori, anyway |
| 23:36 | <&McMartin> | My usual experience with C# strings is that they were basically Java strings, which don't do that. |
| 23:37 | <&McMartin> | So my expectation would be that every time you called toString() on the core model object, you might get a different value out, so the question is what your call history really is. |
| 23:38 | <&McMartin> | I have found https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/keywords/interpolated-strings |
| 23:39 | <&[R]> | He gave some more detail: |
| 23:39 | <&[R]> | <CSharpIsDull> string shareId ; foreach ( Tshare in shares ) { shareId=Tshare.getShareId(); someCollection.str = "S" + shareId + ":" + Tshare.SerialNum; } then later: foreach ( Tcoll in someCollection ) { print Tcoll.str ; } |
| 23:39 | <&[R]> | <CSharpIsDull> so I see share ID's of 20,21,22. ALL the print's come out with 22. |
| 23:39 | <&McMartin> | My new expectation would be that the interpolated string will be re-interpolated with current values independently each time it is converted to "string" or "IFormattable", and is otherwise conceptually closer to a closure that may be repeatedly invoked. |
| 23:40 | <&[R]> | <CSharpIsDull> string shareId ; foreach ( Tshare in shares ) { shareId=Tshare.getShareId(); string temp = shareId; someCollection.str = "S" + temp + ":" + Tshare.SerialNum; } then later: foreach ( Tcoll in someCollection ) { print Tcoll.str ; } |
| 23:40 | <&[R]> | <CSharpIsDull> woiks. |
| 23:40 | <&[R]> | So basically string concatination creates a closure? |
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| 23:41 | <&McMartin> | I dunno. |
| 23:41 | <&McMartin> | I'd doubt it |
| 23:42 | <&McMartin> | But then I'd also expect no difference there becuase I'd assume string was a reference type, but it clearly isn't or "temp = shareId" would be a no-op |
| 23:42 | <&McMartin> | I'd like to note that I am somewhat boggled by "someCollection.str = " being repeatedly called. |
| 23:42 | <&McMartin> | Since apparently that isn't overwriting the same field repeatedly? |
| 23:43 | <&McMartin> | Is it creating and then reusing some shell object when adding values to the collection? |
| 23:43 | <&[R]> | I think he's cutting out a bit of intermediate code |
| 23:43 | <&McMartin> | In that case, most likely culprit is some case of unintended aliasing |
| 23:43 | <&[R]> | Someone suggested it mgiht be a delegate |
| 23:43 | <&[R]> | http://www.c-sharpcorner.com/UploadFile/d6fefe/delegate-anonymous-function-and-lambda-expression-in-C-Sharp/ |
| 23:50 | <&McMartin> | Yeah, there are two classic ways you can end up with something like that happening, and one involves bindings inside lambdas |
| 23:50 | <&McMartin> | And then the other involves directly aliasing a value instead of evaluating it inside the loop and copying the value out before the next iteration |
| 23:51 | <&McMartin> | (Really, the first is an instance of the second, but they usually look a lot different) |
| 23:51 | <&McMartin> | JS in particular when you're creating an array full of function objects is vulnerable to that |
| --- Log closed Fri Mar 09 00:00:37 2018 |