| --- Log opened Mon Jul 23 00:00:14 2007 |
| --- Day changed Mon Jul 23 2007 |
| 00:00 | <@Chalain> | Bjarne Stroustrup made a lot of people spit out their coffee when he said that C++ should be written in ps fonts to enhance readability. |
| 00:00 | <@Chalain> | ...and then went on to write an entire book in that style and produced some really freaking READABLE C++ code. |
| 00:00 | <@Serah> | Sounds like a dane :p |
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| 00:11 | <@ToxicFrog> | Hmm. I need API advice on getopts() |
| 00:11 | <@ToxicFrog> | So far I'm thinking two different signatures (short and long): getopts(argv, "ab:c?def") is the short form. |
| 00:12 | <@ToxicFrog> | The long form would be something like: getopts(argv, { "a", "arg-one" }, { "b", "arg-two", true }, { "c", "arg-three", false }, ...) |
| 00:13 | | JohnBDoe is now known as AnnoDomini |
| 00:14 | <@ToxicFrog> | ...hmm. The return signature I was thinking of breaks for stuff where order of arguments is important, though. |
| 00:14 | | * ToxicFrog reimplements it as a iterators |
| 00:46 | <@ToxicFrog> | Gmm. |
| 01:20 | <@ToxicFrog> | Arghsjgksjdhfjshdfgas |
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| 15:15 | | * ToxicFrog checks in six changelists totaling over two thousand changed files |
| 15:16 | | * Serah eats them. |
| 15:53 | | * ToxicFrog tries to figure out a way to implement multi-argument memoization using recursion |
| 15:54 | | * Serah eats it. |
| 15:55 | < AnnoDomini> | Obviously, you need to use a three-hand, moss-covered gredunza. |
| 16:16 | < MyCatVerbs> | http://www.zedshaw.com/rants/programmer_stats.html <-- I love this title. |
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| 17:01 | <@ToxicFrog> | <Plouj> nothing is impossible |
| 17:01 | <@ToxicFrog> | <Plouj> just non-trivial |
| 17:01 | <@ToxicFrog> | <ToxicFrog`> What about solving NP-Hard problems in deterministic polynomial time? |
| 17:01 | <@ToxicFrog> | <Plouj> touche |
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| 18:10 | <@ToxicFrog> | Done: table.resize table.dump table.print string.split string.trim string.join string.rfind pairs ipairs type printf eprintf fprintf sprintf fd:printf math.da?(tan|cos|sin) oct |
| 18:11 | <@ToxicFrog> | In progress: table.copy table.clone getopts memoize string.interpolate |
| 18:11 | < Vornicus> | What are these that you have completed? |
| 18:13 | <@ToxicFrog> | I'm tidying up my util.lua for another release. |
| 18:13 | < Vornicus> | "math.da?"? |
| 18:13 | <@ToxicFrog> | Read it like a regex. |
| 18:14 | < Vornicus> | RIght, but... |
| 18:14 | < Vornicus> | math.dsin? |
| 18:14 | <@ToxicFrog> | math.dtan, math.datan, math.dcos, math.dacos... |
| 18:14 | <@ToxicFrog> | Trig functions that use degrees instead of radians. |
| 18:14 | < Vornicus> | aha |
| 18:14 | <@ToxicFrog> | The ones with a are the arc-equivalents. |
| 18:14 | < Vornicus> | yeah, got that. |
| 18:15 | | * Vornicus wonders what (sin|cos|tan)h look like in degrees; the existing versions are slaved to radians |
| 18:16 | < Vornicus> | (they are, iirc, i * sin(i*x) ) |
| 18:19 | <@ToxicFrog> | No idea. |
| 18:19 | <@ToxicFrog> | Anyways, the totally bastardly remaining ones are getopts and memoize. |
| 18:20 | <@ToxicFrog> | table.copy and table.clone are fairly simple, as is string.interpolate. |
| 18:21 | <@ToxicFrog> | Hmm. |
| 18:22 | <@ToxicFrog> | Table.copy: preserve metatable links, yes/no? |
| 18:22 | <@ToxicFrog> | Table.clone: copy metatables, yes/no? |
| 18:23 | < Vornicus> | Sounds right |
| 18:23 | <@ToxicFrog> | ...that doesn't help |
| 18:23 | < Vornicus> | I don't know, really |
| 18:24 | < Vornicus> | I don't have the foggiest clue about what the metatable does and why you would want to copy them or link to them. |
| 18:24 | <@ToxicFrog> | Hmm. I think yes to both, though. |
| 18:24 | <@ToxicFrog> | Metatables control operator overloads, basically |
| 18:24 | <@ToxicFrog> | If you want to alter the behaviour of an object, you populate a table with stuff, then attach that to the object as a metatable. |
| 18:24 | <@ToxicFrog> | Multiple objects can share the same metatable, too, which is handy. |
| 18:25 | <@ToxicFrog> | So, the question is, when shallow-copying a table, should it share any operator overloads posessed by its parent? |
| 18:25 | < Vornicus> | Should, yes. |
| 18:25 | <@ToxicFrog> | And when deep-copying, should metatables get deep-copied as well? |
| 18:25 | < Vornicus> | I don't know about that. |
| 18:26 | <@ToxicFrog> | I think yes; the purpose of clone is to create something that is identical in shape and behaviour, but fully distinct. |
| 18:26 | < Vornicus> | that would cause, if I understand it, things that get cloned to have, essentially, a different class. |
| 18:27 | <@ToxicFrog> | (on the other hand, if your metatable refers to _G or something, you just ended up creating a copy of your entire program state) |
| 18:27 | < Vornicus> | yeah |
| 18:30 | <@ToxicFrog> | And deciding on class based on metatable is...not always correct. |
| 18:30 | <@ToxicFrog> | That's how the utility functions in lauxlib do it, but that means you can't stuff object-specific stuff into the metatable. |
| 18:33 | < Vornicus> | well, okay. |
| 18:34 | | * ToxicFrog rearranges things so that table.copy() is now variable-depth, defaulting to infinity |
| 18:37 | <@ToxicFrog> | Oh, recall FuncTables from the other day... |
| 18:37 | <@ToxicFrog> | The flip side of that: TableFuncs. |
| 18:37 | <@ToxicFrog> | That is to say, functions that have members you can manipulate. |
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| 19:25 | <@ToxicFrog> | table.copy done, ditching table.clone for the time being. |
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| 22:07 | <@ToxicFrog> | A winner is me! |
| 22:07 | <@ToxicFrog> | I has a memoize() that works on varargs functions. |
| 22:15 | <@ToxicFrog> | http://lua.pastey.net/71206 |
| 22:19 | <@ToxicFrog> | There has got to be a better way, though. |
| 22:19 | <@ToxicFrog> | Probably involving curry. |
| 22:23 | | * jerith hands ToxicFrog a chicken madras. |
| 22:26 | | * ToxicFrog consumes it utterly |
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| --- Log closed Tue Jul 24 00:00:01 2007 |