Automatic insertion of the green 'chrome' of our template documentation. in Lua and functions defined in C. As we have seen in other examples, What I'm trying to do is much more complicated, see Module:Convert/makeunits, but is the same issue. Anyone interested in testing templates may want to try Module:Convert/tester which allows hundreds of tests to be easily defined. its number of parameters. This is not a tutorial or step-by-step guide. ( How to implement action sequences and cutscenes in Lua, Making and storing references to game objects (entities) in C++ and Lua, https://www.lua.org/manual/5.4/manual.html#4. Servicing Stanislaus, San Joaquin and Merced Counties, 2209 Fairview Drive Suite A Ceres, CA 95307. FT2(Talk|email) 02:07, 20 March 2013 (UTC), I found this guide for learning how to code Lua, may be of help or use www.lua.org/pil/contents.html#P1, I feel like I must have reinvented the wheel here, but I copied Template:Tlx to Template:Mlx with minor modifications, so we can type, and get {{#invoke:ConvertNumeric|decToHex|99 33}}, It would be good if someone could look this over for any flaws before it gets cascade-protected by something. Updated link. An auto sizing callstack will allocate and release callstack pages on demand which will ensure the minimum amount of memory is in use at any time. Now you dont need to ship this init.lua with your binary and life becomes easier. : Overusing them makes code harder to understand because now you need to make sure that the object youre are pointing to doesnt change unexpectedly. WebTo call a Lua funcion, we first push the function onto the stack. If you wish to retain the metadata for logging or other purposes, the entire metadata table is returned as the third return value from load(), containing the metadata for every key that was operated on (including those with no conflicts). For instance, consider the following function, to increment a global counter. This function has 1 as its default argument; that is, the call incCount (), without arguments, increments count by one. When you call incCount () , Lua first initializes n with nil ; the or results in its second operand; and as a result Lua assigns a default 1 to n . You just compile a bunch of C files, link with the library and youre ready to go - you dont need to rewrite half of your program/game or make your build script 10 times more difficult. Normally this wouldn't be an issue, except I was wondering if you write a Lua module that requires another Lua module or mw.title.new()s a data file, is the target module or file protected when the main module is cascade-protected? Right now I'm putting ratings on the documentation subpages, which I think is what someone suggested before at one point for categories. WebThe Redis Lua execution context always provides a singleton instance of an object named redis . Lua has eight basic types: nil (undefined) boolean (boolean) number (numeric) string (string) Timing Lua Code Correctly in OpenResty A Go function should implement the LGFunction type to be callable from Lua. --Vriullop (talk) 11:07, 22 March 2013 (UTC). However: This overhead may be trivial compared to what the body of Preceding unsigned comment added by Ryn78 (talk contribs) 03:27, 13 October 2013 (UTC), Is it possible for a module to invoke another module? In our C++ file, we need to define the consoleLog function that it will receive from JavaScript. Lori Baker - via Google. I see that I can access Mediawiki libraries as simple as "mw.stat", are modules on Wikipedia accessible as easily? (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? I don't know, but with some of these things being transcluded on every page in the wiki, and having elaborate powers to write anything they can slip by the interface, we should be wary of security holes, and the first step is to know quickly and certainly which are a unit, I think. I think that this is less effective than it could be, however. Its a good starting point for making your own CMake build for Lua, though (or if you use older versions of Lua, they work well). Incnis Mrsi (talk) 22:46, 9 January 2014 (UTC). If you used classes as globals (which Ive seen in many tutorials and real code), you might have a script like this: Suppose that you didnt execute some_class.lua first (which defines a global SomeClass). *, I'd like to find out which mw.site library options are available, and print their value, without having to specify each one individually, ie. In brief, the categories I set up were pre-alpha, alpha, beta, release, and protected. That overhead might be removed if we made save/restore a built-in operation in Lua. Local declaration of (built-in) Lua functions to reduce Reinterpreting The Lua Interpreter | Hackaday (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. Toohool (talk) 17:18, 27 March 2013 (UTC), I have another related question. Calling Lua code is done through L.CallByParam, which takes a parameters object, P, and arguments as variadic parameters. The Lua version has some differences from the current template, so I would like to get others' comments before making the switch. Thank you for your attention!--Qgil (talk) 21:16, 2 July 2013 (UTC), I created Module:Testcase table, and it seems to work pretty well (see the current transclusions). Result #3 works correctly. Is there a programme wizard who can help see if I've done something stupid? The easy part is 'getting rid of the function name': assuming p is the variable in the last line of the program, just say, However, I see no way to get rid of the pipe - it. I'd rather see useful LUA links. lua.LVIsFalse(v LValue) - Returns true if nil or false. How much do function calls impact performance? Wnt (talk) 15:56, 6 January 2014 (UTC). Now, with this new LUA language, template editing is becoming more and more the domain of technicians. Needs study to guarantee correctness! While running tests to simulate a large #switch function of 3,000 branches, I repeatedly confirmed how passing thousands of parameters is typically exponentially slower beyond the first 500 parameters. -Wikid77 (talk) 12:07, 24 March 2013 (UTC). I'm currently using the following function to get template arguments. Please d Think of Lua scripts as functions - you can call them with require or do_file and they can return variables. but this fact has no relevance to Lua programmers. It's just that a central repository would be so beneficial for everybody (en.wiki devs/editors included) and en.wiki can't really be (in my honest and personal opinion) that place. Mr. Stradivarius talk 14:16, 4 November 2013 (UTC). A [6] question at Module:Redirect reminded me of a remarkable statement by @Wikid77: that updating some Lua modules can cause 7 million pages to be reformatted on the WP:Job queue. Everyone took really good care of our things. The LState is needed for interacting with the Lua VM, most commonly for retrieving function arguments. But what I'd like to ask now is: as a matter of general policy, does it ever make sense to link from a module that is in such widespread use that it needs to be protected to the current copy of another module? The sandbox Wiki code {{Special:AllPages|namespace=666}} {{CURRENTTIMESTAMP}} returns a timestamp that changes each time the page is reloaded, because caching is disabled. try: with open("foo.txt") as f: It is superfluous if you only call the function once within the scope of the local variable, but that is pretty rare. WebYou can call a template from a Lua module using frame:expandTemplate. If you'd like to make a request, please do that too! :) Wnt (talk) 08:16, 20 November 2013 (UTC), Can Lua take the contents of a Wiki page, and reprocess it? Use Git or checkout with SVN using the web URL. And finally, see what LVE and PICO-8 do. For example, Module:Navbar contains the code: In what case would frame not be equal to mw.getCurrentFrame()? If so, I can add Module:WikiLink to d:Q14746829. The price they quote you is guaranteed and if your load comes in on the scales below the pounds they quote you they will refund you the difference you paid. Or is it something else? I measured the overhead of direct and virtual C++ function calls on the Xenon PowerPC some time ago. Our compilation still gets rid of the run-time Do I need to use %f and remove the trailing zeros with string.match or string.gsub? Throughout the post L will denote a pointer to lua.LState. However, the basic API is quite simple, and the advanced features deserves its own post. Thanks! WebIt's more terse, though at the expense of the function call overhead. Godoc: http://godoc.org/github.com/yuin/gopher-lua, All code in the post can be found at http://github.com/otm/embedding-lua-in-go. Mr. Stradivarius talk 01:15, 29 October 2013 (UTC), How well does Scribunto defend itself against DoS, or possibly XSS, but especially DoS as we are dealing with a Turing-complete language? You are free to edit the content of Wikipedia:Lua/To do during the discussion but should not remove the miscellany for deletion template from the top of the page; such a removal will not end the deletion discussion. A complete example looks like this: The LState defines some convenience functions, in the example above we are using L.ToInt(1) to fetch the first function argument. Its much easier to test if something is non-nil or has a specific type/fields in Lua than in C++. Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. Then, executing script.lua would resullt in an error: SomeClass is nil. He has also implemented a number of incredible little libraries which Ive used in my projects: Many other great libraries can be found via LuaRocks: https://luarocks.org/. If a conflict can not be resolved in a satisfactory manner, the function should throw an error to signify this; returning false or nil will result in that value being written to the key. This will make your life easier, because you would be able to write less binding code and be able to stay inside Lua code as much as possible. a function definition has a conventional syntax; It would be a bit odd. --HectorMoffet (talk) 11:05, 29 December 2013 (UTC). Thank you!--QuimGil (talk) 07:52, 21 June 2013 (UTC). But with the banning of the print function and the extra steps to validate the lua code in Wiki, I can't tell if the lua.org tutorial truly helpful to me as I don't know how to convert all those examples to comply with MediaWiki's lua standard. its hard to know if what youre passing to Lua will be copied or passed by a reference). Page contents not supported in other languages. To get the perf bit out of the way: the bridging code between C++/Lua has overhead compared to just calling Lua from Lua or calling C++ from C++. after imported i find error in article with this Category:Pages with script errors. You can find Luas reference manual here. I've been trying to use some of the other frame functions, and I can get them working via #invoke, but not through the debug console. All rights reserved. The less data is shared between C++ and Lua, the better. It may sound like asking to be babysat or spoon-fed, but I'm totally stuck. --Iantresman (talk) 00:06, 12 December 2013 (UTC). You can download the latest release manually and include it in your project, or you can install it in your project directory through Luvit's package manager Lit, using the install command. See the demos and more details at WikiProject Flag Template. I've taken some steps to bring it partially in line with our Template documentation system. lua WebLua programs can emit signals using the function call syntax. We are proud to provide our customers with these services and value by trained professionals. The LTable type can be used for emulating namespaces and classes. Because it makes it much easier to track dependencies between various script files and makes them load each other when theyre needed. Will your logo be here as well?. However, if we standardize this, with the names copied verbatim and the fairly distinctive capital letter after the /, it should be easy to have a bot notify the author(s) of Module:Submit an edit request automatically when Redirect is updated. Example: L.GetTop() returns the number of arguments that was used when the function was called. Older versions of Lua created empty tables with some pre-all ocated slots (four, if I 7.3 Hooks Dont put too much code into one script - its easy to separate everything into smaller scripts. Please comment over there if you're interested. Mr. Stradivarius talk 12:54, 10 July 2013 (UTC), We have {{WikiProject Lua/header}} that does the header tabs (I started). The downside is it will incur a small performance impact every time a new page of callframes is allocated. lua If nothing happens, download GitHub Desktop and try again. 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. the results which can be obtained by a user with the Special:PrefixIndex page)?
