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20130405 19:18:50< irker246> AI-Demos: mattsc master * re017e6a / lua/battle_calcs.lua : battle_calcs.get_attack_combos_subset(): use wesnoth.get_time_stamp() instead of os.clock() (+6 more commits...) - http://git.io/GWnTcQ
20130405 19:18:50< irker246> The former appears to be about 10 times faster than the latter.  It
20130405 19:18:50< irker246> also has an additional significant digit, although that doesn't matter
20130405 19:18:50< irker246> for this application.
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20130405 19:43:00< mattsc> Hey all, I have an (I think) simple Lua problem that I cannot figure out.  I must be missing something.
20130405 19:43:05< mattsc> In this code: http://pastebin.com/nnBPfWGy
20130405 19:43:40< mattsc> I thought that arg contains the content of the vairadic variable ...   But it is nil here.
20130405 19:43:58< mattsc> *variadic
20130405 19:45:22< vultraz> uh...is 'arg' in the function arg list?
20130405 19:45:39< mattsc> ^ called with:  ai_helper.print_ts('dd', "start")
20130405 19:46:07< mattsc> vultraz:  the way I interpret this: http://www.lua.org/pil/5.2.html  that's done automatically
20130405 19:46:44< mattsc> As I said, I'm probably missing something obvious.
20130405 19:47:01< vultraz> hm...
20130405 19:47:08< vultraz> _8680_?
20130405 19:48:25< vultraz> mattsc: what's dd and start?
20130405 19:49:09< mattsc> strings.
20130405 19:49:16< mattsc> test output
20130405 19:49:28< mattsc> see the quotes?  ;)
20130405 19:49:38< vultraz> why is 'dd' called with single quotes?
20130405 19:50:04< mattsc> Because it looks funnier to use different types of quotes...
20130405 19:50:43< mattsc> No, seriously, because I didn't pay attention and it doesn't matter (so when I noticed I was too lazy to change it)
20130405 19:51:09< vultraz> ok
20130405 19:51:12< vultraz> thought it might matter
20130405 19:51:28< mattsc> (I actually tried, it doesn't make a difference)
20130405 19:51:40< vultraz> then I have no idea
20130405 19:51:47< vultraz> _8680_ might, he's a lua wizard
20130405 19:54:59< mattsc> Btw, when I change the call to print() to:
20130405 19:55:02< mattsc> print(ts, ...)
20130405 19:55:26< mattsc> it works just fine, but I want the time stamp to appear at the end.  And I thought the code pasted up there is how you do that.
20130405 19:56:05< vultraz> why not print(..., ts)
20130405 19:56:22< mattsc> That only takes the first of the arguments in ...
20130405 19:57:34< vultraz> so you want all of ...
20130405 19:58:26< mattsc> Yes.  If I do AH.print_ts(1,2,3) I want the ouput to be: 1  2  3  timestamp
20130405 19:58:42< mattsc> etc., for any number of arguments, just as the normal print() function.
20130405 19:59:03< mattsc> Anyways, I've wasted all the time I have on trying to figure this out.  Got to catch a plane now...
20130405 19:59:09< mattsc> I'll check the logs later.
20130405 19:59:16< mattsc> Thanks for trying to help, vultraz 
20130405 19:59:26< vultraz> no prob
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20130405 20:36:09< _8680_> mattsc:
20130405 20:36:21< _8680_> (I know you’re gone, but you said you’d read the logs.)
20130405 20:37:27< _8680_> Firstly, there is no longer a global `unpack` function.
20130405 20:37:50< _8680_> In Lua 5.2 (and thus Wesnoth 1.11) it is now `table.unpack`.
20130405 20:39:30< _8680_> Secondly, `unpack` returns the values in the passed list, with multiple value return, as an explist (I think that’s the correct term).
20130405 20:40:03< _8680_> Which is basically what `...` evaluates to.
20130405 20:40:51< _8680_> So the only difference between `print(..., ts)` and `print(table.unpack(arg), ts)` is that the latter is (presumably) slower.
20130405 20:42:05< _8680_> Try appending `ts` to `arg`, then unpacking and printing: `arg[#arg+1] = ts; print(table.unpack(arg))`.
20130405 21:57:16< irker246> wesnoth-umc-dev: vultraz * r18031 /trunk/NX-RPG/ (7 files in 6 dirs): 
20130405 21:57:16< irker246> wesnoth-umc-dev: NX: wired in Elvish Spellbinder unit type
20130405 22:00:32< irker246> wesnoth-umc-dev: vultraz * r18032 /trunk/NX-RPG/units/faeries/Elvish_Spellbinder.cfg: 
20130405 22:00:33< irker246> wesnoth-umc-dev: NX: tweaks
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20130405 22:14:03< mattsc> _8680_: yes, I'm back and thanks for the comments.
20130405 22:15:09< mattsc> The problem I am having seems to start even before I am doing anything with unpack etc.  It appears that 'arg' is nil.  Also confirmed by doing using what you suggested:
20130405 22:15:36< mattsc> 20130405 13:13:32 error scripting/lua: ...rt/Wesnoth_1.11/data//add-ons/AI-demos/lua/ai_helper.lua:82: attempt to get length of global 'arg' (a nil value)
20130405 22:15:43< _8680_> Try `local arg = {...}` then.
20130405 22:16:24< mattsc> Hmm, yes, indeed that works.
20130405 22:16:45< _8680_> I think `arg` stopped being automatically set in Lua 5.2.
20130405 22:16:47< mattsc> And it makes sense that it works, but doesn't the manual page I linked above imply that I don't need that?
20130405 22:16:54< mattsc> Oh, I see.
20130405 22:18:05< mattsc> I see, and that online manual is actually for 5.0.  I didn't check that beforehand.  D'oh!
20130405 22:18:20< mattsc> Thanks, _8680_ !
20130405 22:20:04< _8680_> Apologies for the delay; I had never read that page.
20130405 22:21:10< _8680_> I checked §8 of the actual manual [http://www.lua.org/manual/5.2/manual.html], and it doesn’t mention `arg` being obsoleted.
20130405 22:21:28< mattsc> Hmm.  Ok.
20130405 22:22:11< _8680_> Oh, here: <http://www.lua.org/manual/5.1/manual.html#7.1>
20130405 22:22:13< mattsc> Oh, another thing, when I tried print(..., ts) as you suggested (well, actually, I had already tried that), I only got the first passed argument plus the timestamp.
20130405 22:22:25< _8680_> `arg` was deprecated back in 5.1, it seems.
20130405 22:23:13< _8680_> ^^ Yes, as I think you said, an explist (or whatever a multi-value-thingy is called) is truncated to its first value when used in another explist.
20130405 22:23:32< _8680_> Unless it’s the last value.
20130405 22:23:54< _8680_> Function call argument lists are explists.
20130405 22:24:10< mattsc> Yes, that's how it appears to be.  And now that you say it in those words, I vaguely remember having read that somewhere before.
20130405 22:25:03< mattsc> Thanks again, I understand what's going on now.  Sorry for the bother...
20130405 23:08:54< mattsc> _8680_: Another quick question: is either `arg[#arg+1] = ts` or `table.insert(arg, ts)` preferable over the other?
20130405 23:09:08< mattsc> Is one of them faster, cleaner, more elegant, whatever ... ?
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20130405 23:17:16< _8680_> mattsc: `arg[#arg+1] = ts` is faster. `table.insert(arg, ts)` is cleaner. Which is more elegant is up to you.
20130405 23:17:59< mattsc> Cool.  Thanks.
20130405 23:18:53< mattsc> For what I am doing, speed almost always wins.
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--- Log closed Sat Apr 06 00:00:07 2013