1 time resty -e '' We can see theres overhead of about 11 milliseconds on this machine. We have a lot of cases where related modules have the same name with "/" to indicate subpages, and some others where apparently related modules simply extend a name. A fixed size callstack has the highest performance and has a fixed memory overhead. We could also use the template to automatically add Category:Lua-based templates to keep track of converted templates more easily. Does mw.ustring.byteoffset work correctly with negative offsets? Frietjes (talk) 16:17, 30 October 2013 (UTC). I see that I can access Mediawiki libraries as simple as "mw.stat", are modules on Wikipedia accessible as easily? What to write in Lua: gameplay logic, FSMs, cutscenes, etc. I would welcome comments, and if people think the scheme is OK, please consider rating your modules Wnt (talk) 23:31, 16 April 2013 (UTC), I have opened a discussion here: en:Module_talk:String#Replication on other wikis. Instead of requiring Module:Redirect from a protected module (or in this case a template, Template:Submit an edit request, which serves MediaWiki:Protectedpagetext), you would simply require or link to a copy (Module:Submit an edit request/Redirect). Embedding Lua in Go itch.io was written with it and it compiles to vanilla Lua. Incnis Mrsi (talk) 11:59, 2 July 2013 (UTC), Hi, your feedback is welcome at Bug 50329 - We need a common repository for Scribunto modules and templates. Also explains why the uselang=qqq hack doesn't work to show the scribunto messages. When programming in Lua, you may use constructors to avoid th ose initial rehashings. When you write {true, true, true} , Lua knows beforehand that the table will need three slots in its array part, so Lua creat es the table with that size. Mr. Stradivarius talk 12:54, 10 July 2013 (UTC), We have {{WikiProject Lua/header}} that does the header tabs (I started). The related, but separate issue, for speed of #invoke, can quicken every use of Lua, if 1.22wmf1 successfully doubles the speed of each #invoke. Plastikspork (talk) 22:08, 2 November 2013 (UTC), I've created Module:Pagetype, a replacement for {{pagetype}}, and I am thinking of updating the template to the Lua version later on this week. In the example bellow sayHello function is first defined, and then called in the second call to DoString. For example, return {84 = 132}, or return {'84' = 132}, or return {0 = 00}, give errors demanding a } near the =. There is no reason to do it for functions which are already Is there a programme wizard who can help see if I've done something stupid? The function signature must match what you passed in. Basically, you need to tell Lua explicitly that something youve created in the coroutine needs to outlive this coroutine (and this is done with lua_xmove). Ultimately MediaWiki should issue another tutorial for Wikipedians (without prior knowledge of C and Lua) due to the differences from standard Lua. For example, Module:Navbar contains the code: In what case would frame not be equal to mw.getCurrentFrame()? (In the case of Module:Redirect, when I look at the pages that link to it I could easily think, meh, it's not even used by 50 pages, why not start making a series of small edits as long as they preview OK? Johnuniq (talk) 06:53, 11 October 2013 (UTC), Doesn't Wikipedia's version of Lua allow the GetURL function (or equivalent)? --Jarekt (talk) 16:24, 14 March 2013 (UTC), Are module authors permitted to use other licenses (presumably in addition to the CC-BY-SA license) for modules they develop? The first question, of course, is whether we should require() at all. All values in Lua can be stored in variables, used as arguments when calling functions, and returned as the result of their execution. The approach of Module:Sandbox - having every user put scripts into a common receptacle - seems unworkable. Isnt it great? You're looking for performance in the wrong place. The problem with function calls is not that they cost much. There is another problem. Function c Of course, the specific delay depends on server load, but follows the general exponential slowdown formula, where 7,000 parameters is far slower than a linear extension of 7000/6000 or 17% slower, and runs closer to 47 seconds (+70% slower) rather than 27+17%=31.6 seconds. How you divide up your code among different The sandbox Wiki code {{Special:AllPages|namespace=666}} {{CURRENTTIMESTAMP}} returns a timestamp that changes each time the page is reloaded, because caching is disabled. See a simple example of how to build Lua with CMake and use it with sol2 here. lua.CanConvToString(v LValue) - True if LString or LNumber. Also, this page should explain that it is not possible to move a module to another namespace or vice versa, except doc pages (I think). I did not see any mention of this in the tutorial.--greenrd (talk) 10:04, 19 October 2013 (UTC), I've started up a new discussion about this at Wikipedia talk:Lua style guide#CodeEditor switched to tabs. Otherwise false. Functions can both carry out a specific task The less data is shared between C++ and Lua, the better. Johnuniq (talk) 02:22, 25 June 2013 (UTC). Please take a look at Module:RepeatString and Template talk:Repeat and see what you think. (alright, the bot might miss that one, unless it knows to go back and check a template by the same name also, but you understand) My feeling is that if the reuser is going to put millions of pages on the queue, he should have the chance to decide whether he wants the latest update in the module to be passed along, or if it can wait. In brief, the categories I set up were pre-alpha, alpha, beta, release, and protected. Eg: {{example |row1 = {{template2|height=52}} }}, In the above exaple we can get row1 as frame.args.row1 but is it possible to get height from row1. Can templates, MediaWiki pages or parser functions be called from Lua? Should I return a sequence of hundreds of strings relying on Scribunto in concatenating it? I'm currently using the following function to get template arguments. It is also possible to make the function a parameter if it comes from a defined list of choices - just load up your data and set a loop that p[xyz] = function(frame) return p.main(frame, xyz) end. ], So templates can call Lua modules, parser functions and pages in MediaWiki namespace. For example, I might want to process the posts on a talk page, and add some extra formatting. And to fetch an argument without conversion the L.Get(n int) function can be used. There was a problem preparing your codespace, please try again. The #invoke speed in March 2013 has been about 180/second, compared to short templates running 350-600 per second, or parser functions >750/second, or character-insertion templates running 2,400/second. If nothing happens, download GitHub Desktop and try again. The NewPP parser hits the huge delays when passing 6,000 parameters whether to Lua, or to a template, or to a #switch parser function of 6,000 "|x=" branches. Hex (? Best Mr. Stradivarius talk 10:42, 27 March 2013 (UTC), You've got it pretty much right. Gut feeling is usually wrong. {\displaystyle d=3^{(n/2000)}.} This was possible because the wikimarkup language was very intuitive, and easy to understand even for the layman. Long story short, the overhead of a direct (non-virtual) function call was approximately 5.5 nanoseconds, or 18 clock cycles, compared to an inline function call. The overhead of a virtual function call was 13.2 nanoseconds, or 42 clock cycles, compared to inline. These timings are likely different on different processor families. Requires all Lua files in a given directory. Wikipedia talk:Lua/Archive 1 Relevant to Lua, userscripts, and user scripting generally. If anyone could help me to work this out I'd be very grateful. ", [ [\w+\. Can one call lua function that returns sevaral strings and pass them to a template? This is typically done with a copyright template placed on your user page though you might want to modify one of them to specify that it only applies to Lua modules. via middleclass library), dont do it like this: and then, when you want to create an instance of this class, you do this: Why do it like this? Maybe. The compiler might decide "hey, this function is only called a few times, and I'm supposed to optimize for speed, so I'll just inline this f Text formatting (bold, italics) breaks when the ''/''' tags are not closed for each argument. I bypassed the most serious problem, but for some reason the method is generating incoming links to nonexisting articles. Page contents not supported in other languages. Extra arguments are thrown away; This commit does not belong to any branch on this repository, and may belong to a fork outside of the repository. The Lua version has some differences from the current template, so I would like to get others' comments before making the switch. What functions should be called in C++ gameloop from If you notice that your C++ function has a huge overhead because of Lua calls, consider using this pattern: If you dont use local to define/init a variable, it becomes a global by default. Time-delay formula: The initial tests show a time-delay formula as roughly delay=3^(n/2000) seconds, where n is the number of parameters passed, and for n=6,000, the delay has been 3^3 or 27 seconds, or for n=7,000 then the delay has been 3^3.5 or 47 seconds. Your opinions on the matter are welcome; please participate in the discussion by adding your comments at Wikipedia:Miscellany for deletion/Wikipedia:Lua/To do and please be sure to sign your comments with four tildes (~~~~). Immediately afterward it gives you another line of codes which I have absolutely no idea where to insert it to make it functional at all. This concept might be extended to support more than one memory location: There are some practical functions to convert and check lua.LValue objects. (and object-oriented programming) in more detail. The same can be said about making your program expandable with plugins. --Iantresman (talk) 14:56, 12 December 2013 (UTC), --Iantresman (talk) 09:36, 13 December 2013 (UTC), Does our implementation allow Lua scripts access to whether the user is logged in or not? The LState is needed for interacting with the Lua VM, most commonly for retrieving function arguments. For instance, if we have a function like. Since Lua has lexical scope at the block level rather than the function level, this works similarly to the way Python calls __exit__. I measured the overhead of direct and virtual C++ function calls on the Xenon PowerPC some time ago. Although Lua can still process the 6,000 parameters, to compare choices, within "0.02" Lua seconds, the load time of the #invoke interface is 27 seconds.