The syntax of the template sends another template as parameter. For example, Module:Navbar contains the code: In what case would frame not be equal to mw.getCurrentFrame()? / The returned integer defines how many return values has been pushed to the Lua stack. I'm a rookie! NeoVim, which uses Lua scripts for user script code. For instance, all library functions are written in C; The functions in question had a single parame Command line parameters, environment variables, and configuration files are common ways to change the behavior of software. So the idea is the next one: But lua has a specific way to treat weblink and it is right now impossible to use a web address as a string. OUR MISSION. This makes dependencies between files hard to track and require you to manually execute some_class.lua before you can execute script.lua. If you need a debugger, I recommend checking out. You choose what Lua code can and cant do. So tonight I put together Module:Unsubst, which can be used to do the same thing without all the limitations of {{unsubst}}. lua.CanConvToString(v LValue) - True if LString or LNumber. They have a great system for tracking your belongings and a system for checking to make sure you got all of your belongings once you arrive at your destination. I am a repeat customer and have had two good experiences with them. WebLua scripts have the same capability with calling MMF events. Wnt (talk) 15:52, 22 January 2014 (UTC), Wikipedia:Lua/To do, a page you substantially contributed to, has been nominated for deletion. n It stays global and doesnt get collected by a GC until it has been set to nil. At the moment, we have three patterns in naming a module sandbox page: I suggest that is one too much. 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. Calling the LValue.Type() returns the corresponding LValueType. Debresser (talk) 10:57, 8 December 2013 (UTC), Is the "Wikipedia namespaces" infobox necessary top right? How do I fix this? ?0" here but useful if omit above. And you can do even better, you can hide library details and not expose them to Lua at all which will make switching between lower-level frameworks much easier, for example: If you want to use a C library and youre using LuaJIT, you dont even need to create a binding for it at all. 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. A fixed size callstack has the highest performance and has a fixed memory overhead. 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). Yes, you can replace built-in functions because they are simply functions accessed from global variables. This is not a tutorial or step-by-step guide. Frietjes (talk) 00:03, 4 July 2013 (UTC), At the moment we have the {{lua talk}} template to use on talk pages of templates converted to Lua. Your help pointing to ways to improve is welcome. 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. Page contents not supported in other languages. the colon operator. ) 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. To get the perf bit I'm a happy user of this space myself with the pet projects I develop in my free time. You can call a function with a number of arguments different from -- Don't need the "%. For instance, all library functions are written in C; Exposing Go functions to Lua is essential to create custom a custom API. This can result in slow compilation times, unreadable error messages and some interfaces are not that friendly (e.g. Thank you!--QuimGil (talk) 07:52, 21 June 2013 (UTC). I very much regret that. 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 you'd like to make a request, please do that too! or subroutine in other languages) Also, your feedback here about the best way to organize the data is also welcome. Enrique Garca Cota has a lot of great articles about Lua: http://kiki.to/. I see that I can access Mediawiki libraries as simple as "mw.stat", are modules on Wikipedia accessible as easily? Gut feeling is usually wrong. mw.site.currentVersion, mw.site.scriptPath, etc etc. These snippets of Python and Lua are roughly equivalent. Anomie 03:36, 1 November 2013 (UTC), User:Wnt and I have had a little disagreement over the type parameter of the {{lua}} template. 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. a function definition has a conventional syntax; 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? Even if you do, with LuaJIT youll be able to achieve C/C++ level performance. The parameters object takes three important parameters: The following code defines a concat function in Lua. now i wanted to translate Category:Pages with script errors in bn language. You can divide up your code into separate functions. The LTable type can be used for emulating namespaces and classes. Work fast with our official CLI. may be relevant to this problem. Our compilation still gets rid of the run-time Lori Baker - via Google. I'd rather see useful LUA links. Servicing Northern California For Over 25 Years, Select The Service Your Interested InDocument ShreddingRecords ManagementPortable StorageMoving ServicesSelf StorageOffice MovingMoving Supplies. Link/Create testcases link for Module pages. Then, see if you really need to move this code (or parts of it) to C++. This code is OK (calling C++ from Lua is cheap): This code is not that good (calling Lua from C++ is slow): Profile first. 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. They have lots of options for moving. In the example bellow sayHello function is first defined, and then called in the second call to DoString. Passing just 1,000 parameters run about 1 second, and splitting 6,000 into 61,000 groups could process all 6,000 within 6 seconds, rather than 27. If you think that your game became slow because of Lua code, profile first before rewriting it in C++. 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? The resty command itself has a startup and exiting overhead. Lua is a language with implicitly dynamic data types. Lua adjusts the number of arguments to the number of parameters, Writing code like this will become better with new #embed directive in future C/C++ versions, e.g. Result #3 works correctly. 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. I am trying to create a weblink by concatenating 2 strings and by avoiding the display of the full link in an infobox. Putting the following into the debug window gives the values shown: I don't need the functionI'm just asking if it has a bug. I think that this is less effective than it could be, however. A cross between resources, documentation, and useful links. 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. With a clear upsream in a central place like mediawiki.org then en.wiki and other Wikimedia projects could work better on local support and whatever is specific to their communities. WebWe can disable all the type checking by switching a single variable, and no added overhead would remain when the functions are executed (though there is some slight added overhead when the functions are built). "factorial: argument must be a number >= 0", -- likely something like 1=foo=bar, we need to do it as a named arg. The redis instance enables the script to interact with the Redis server that's running -- Sameboat - (talk) 04:26, 19 March 2013 (UTC). or compute and return values. Currently it is misleading advising to check for double redirects. 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. after imported i find error in article with this Category:Pages with script errors. Please let me know your thoughts over at Template talk:Pagetype#Module:Pagetype. During operation, in the event that any functions share the same name, a table will be created with that name and the conflicting functions will be stored there using the name of the script they came from, such that with two scripts foo and bar, both containing the function foo, you would end up with the functions foo.foo and foo.bar. Does mw.ustring.byteoffset work correctly with negative offsets? Wnt thinks that the template should use the "style" type (with a yellow background), and I think it should use the "notice" type (with a grey background). -Wikid77 (talk) 19:29, 22 March 2013 (UTC), When moving a module there is no redirect left behind and existing invocations should be fixed. Is this a problem in my module or in Scribunto? Hence, passing 2,000 parameters runs 3 seconds, 4,000 parameters runs 13 seconds, or 6,000 parameters run 27 seconds. The less data is shared between C++ and Lua, the better. So its better to do it on Lua side, unless you make a C++ API which has to accept tables for ease-of-use - then you dont have much choice (but you can still wrap them into Lua functions and call C++ function internally). The function is followed by the arguments, in order. See discussion at Village Pump (policy)#Protection and management of scripts?. --Iantresman (talk) 11:31, 9 December 2013 (UTC), Can modules "call" other modules? lua.LVAsBool(v LValue) - Convert to bool, nil and false becomes false. --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 tutorial I actually want is how a template with parser functions translate into a Lua module with explanation of what syntax equal what variable/function or whatever. Of course, you can check for this files existence and handle errors appropriately (e.g. Prompt and friendly service as well! [feature X] (images/feature-x.png) Multi-MC Simulation 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. If you notice that your C++ function has a huge overhead because of Lua calls, consider using this pattern: // in C++ sol::table t = lua.create_table (); for (int i = 0; i < 1000; i++) { // do stuff in C++, push data to Lua table occasionally } luaFunc (t); -- in Lua function someFunc (t) for k,v in pairs (t) do -- do stuff end end 5. When calling a function, . We could also use the template to automatically add Category:Lua-based templates to keep track of converted templates more easily. In our C++ file, we need to define the consoleLog function that it will receive from JavaScript. For optional arguments the L.Opt(n int, default T) functions can be used. This bytecode is converted into LLVM IR and then fed into Deegen, which can transform the functions to do tail calls correctly, use the GHC calling conventions, and a Running the Go code will yield: To run a Lua file, instead of a string, call lua.DoFile, DoFile and DoString can be called several times, and thus it can be utilized to expose Lua function. Technical 13 (talk) 12:12, 9 May 2013 (UTC). Toohool (talk) 18:13, 15 March 2013 (UTC). You couldn't keep track of your old experiments, and my experience is that yes, I. Calling Lua code is done through L.CallByParam, which takes a parameters object, P, and arguments as variadic parameters. -happy5214 14:32, 15 March 2013 (UTC), You own the copyright, you can grant whatever licenses you want (in addition, as you say, to the CC-BY-SA license that you've already granted). The body of the compiled Lua function consists of a series of function calls to the helper functions, one per instruction. Or is it something else? Providing global relocations solutions, storage and warehousing platforms and destruction plans. See a simple example of how to build Lua with CMake and use it with sol2 here. and expressions in Lua. If so, I can add Module:WikiLink to d:Q14746829. Our areas of expertise include Commercial Moving Services, Warehousing, Document Shredding and Storage Solutions. You can find Luas reference manual here. Thanks! For example, check Special:WhatLinksHere/3000 United States Census. The system compares actual template output with fixed text, and is only suitable for templates and results that are reasonably short because each template and its expected result have to be in one line. These timings are likely different on different processor Please comment over there if you're interested. I want to output wikitext like this: I have previously done that and it worked well, but when the text between the tags is more varied, something breaks. I can acquire arguments using the frame.args object passed to a script using an iterator function: But this does not seem to work for a library such as mw.site. Iterative multi-file loader, used to load all Lua modules in a directory and return them as one table. I'm currently using the following function to get template arguments. ", [ [\w+\. WebIt's more terse, though at the expense of the function call overhead. thank you. Dcoetzee 23:09, 23 February 2013 (UTC), There's a discussion at the technical pump currently about where to put code that you're experimenting with; as a result Module:Sandbox has been created. d Its simple. My own modules populate only the pre-alpha and alpha categories, but there are some here which I know have reached the other levels. try: with open("foo.txt") as f: in C (or in any other language used by the host application). If an argument to a function can be of more then one type the L.CheckTypes(n int, types LValueType) function can be used to check and yield an error to the user. Is this the right place for Lua programming queries? 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. The parser seems to reject any effort to initialize a table in the return statement if one of the indexes is, or could be, interpreted as a number. = Any suggestion on how to receive this parameter template as a table rather than a substituted string? Currently, there are a reasonable number of templates that try to determine if any of a set of pages exist in order to provide links to those pages. All rights reserved. --SocietyBox (talk) 02:26, 20 January 2014 (UTC). Automatic insertion of the green 'chrome' of our template documentation. :P Anyway, I have taken that idea and added some parameter checking and some documentation, and called it Module:User:Mr. Stradivarius/PrefixIndex. Comments appreciated. 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. There are a number of To(n int) functions available. Is there a programme wizard who can help see if I've done something stupid? 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. Lua has eight basic types: nil (undefined) boolean (boolean) number (numeric) string (string) To learn Lua, read Programming in Lua by Roberto Ierusalimschy. Please (what is sometimes called procedure There are some practical functions to convert and check lua.LValue objects. http://godoc.org/github.com/yuin/gopher-lua, http://github.com/otm/embedding-lua-in-go, http://godoc.org/github.com/yuin/gopher-lua#LTable. 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 -Wikid77 (talk) 12:07, 24 March 2013 (UTC). Its neat. If you're a Lua developer, please watchlist it.
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