The approach of Module:Sandbox - having every user put scripts into a common receptacle - seems unworkable. Each layer of "shell templates" (to #invoke a Lua function) also increases the expansion depth by about +2 levels of the 41-level limit (shows "41/40"). 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). The reference manual for Lua 5.4s C API is here: https://www.lua.org/manual/5.4/manual.html#4, Github repo: https://github.com/ThePhD/sol2. OUR MISSION. the results which can be obtained by a user with the Special:PrefixIndex page)? My own modules populate only the pre-alpha and alpha categories, but there are some here which I know have reached the other levels. lua.LVIsFalse(v LValue) - Returns true if nil or false. extra parameters get nil. The first question, of course, is whether we should require() at all. And finally, see what LVE and PICO-8 do. At Module:DisplayLuaTableContents I see numerous loops as, , but I learned that strings are immutable and hence this assignment is rather costly. thank you. 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. or compute and return values. --HectorMoffet (talk) 11:05, 29 December 2013 (UTC). laura lehn - via Google, I highly recommend Mayflower. If that is not possible: Please suggest an alternative method to implement it. Text formatting (bold, italics) breaks when the ''/''' tags are not closed for each argument. I've taken some steps to bring it partially in line with our Template documentation system. Your help pointing to ways to improve is welcome. to use Codespaces. Hi, is there a way to instruct string.format to not produce trailing zeros with decimal notation? 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. string.format('%f %f %f', 0.00001, 1.2, 3) => 0.000010 1.200000 3.000000, string.format('%g %g %g', 0.00001, 1.2, 3) => 1e-05 1.2 3, This page was last edited on 4 February 2023, at 15:13. Johnuniq (talk) 09:37, 7 October 2013 (UTC). 2000 Relevant to Lua, userscripts, and user scripting generally. I think it really depends on the language and on the function. While the c and c++ compilers can inline a lot of functions, this is not the case fo The second clause supports a simple way to invoke the function from another module (such as from Module:Navbox), or from the debug console: Navbar.navbar({arg1 = 'foo', arg2 = 'bar'});. I was just trying to return those hex tables via loadData and seem to have run into a nasty surprise. Sandboxing is easy. Its stable. 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. We could also use the template to automatically add Category:Lua-based templates to keep track of converted templates more easily. 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. 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. or subroutine in other languages) WebLua scripts have the same capability with calling MMF events. *, 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. Please comment over there if you're interested. 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). 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. Think of Lua scripts as functions - you can call them with require or do_file and they can return variables. What to write in Lua: gameplay logic, FSMs, cutscenes, etc. Many 3rd party Lua libraries usually work with Lua 5.2/5.3/5.4. However: This overhead may be trivial compared to what the body of The body of the compiled Lua function consists of a series of function calls to the helper functions, one per instruction. WebDue to the short-circuiting behavior of or, it will generally impose little additional overhead at call-time: local soundit; do local sounds; function soundit (x) sounds = sounds or { a = "ay" , b = "bee" , c = "see" , . } assert ( type (x) == "string" ) return sounds [x] end end / Command line parameters, environment variables, and configuration files are common ways to change the behavior of software. Enrique Garca Cota has a lot of great articles about Lua: http://kiki.to/. Also, your feedback here about the best way to organize the data is also welcome. Lua adjusts the number of arguments to the number of parameters, Thats basically all youll ever need to know about Lua. It receives a *lua.LState and returns an integer. You can write entire games in Lua without ever touching C/C++. Servicing Northern California For Over 25 Years, Select The Service Your Interested InDocument ShreddingRecords ManagementPortable StorageMoving ServicesSelf StorageOffice MovingMoving Supplies. ]], "jo")' But there is a catch. To get the perf bit Support for calling a parser function is coming soon with frame:callParserFunction, or you could do it today by passing the markup to frame:preprocess. I see that I can access Mediawiki libraries as simple as "mw.stat", are modules on Wikipedia accessible as easily? Please Throughout the post L will denote a pointer to lua.LState. Similar to avoiding use of prior utility templates, when writing other utility templates, I would recommend to use the direct #invoke to access Lua functions from a utility template. that is, to call o.foo adding o as a first extra argument. For example, it is not printing the string "mw.site.currentVersion", and only two "mw.site.stats" table rows, which might suggest it is not recursing properly, or perhaps something else. ], So templates can call Lua modules, parser functions and pages in MediaWiki namespace. 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. You can call a function with a number of arguments different from Right now I'm putting ratings on the documentation subpages, which I think is what someone suggested before at one point for categories. Learn more. Currently it is misleading advising to check for double redirects. I'm a rookie! This code is OK (calling C++ from Lua is cheap): This code is not that good (calling Lua from C++ is slow): Profile first. -DePiep (talk) 11:51, 22 March 2013 (UTC). sol2 is a fantastic library which Ive used for many years. You signed in with another tab or window. Updated link. Just some of our awesome clients tat we had pleasure to work with. Because it makes it much easier to track dependencies between various script files and makes them load each other when theyre needed. 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. WebLua programs can emit signals using the function call syntax. To get automatic errors the L.Check(n int) family of functions can be used; They throw a Lua error if the type check fails. I was going to deploy it on Template:Year in other calendars/testcases, but in my preview it runs out of time by the time it gets to the last test. also, if someone already wrote a module that does the same thing, let me know and I will have this one deleted. The overhead of a virtual function call was 13.2 nanoseconds, or 42 clock cycles, compared to inline. --Iantresman (talk) 11:31, 9 December 2013 (UTC), Can modules "call" other modules? I don't think it was really a active decision. It relies on Module:Sandbox/QuimGil/Flagicon, which provides the logics, and Module:Sandbox/QuimGil/FlagTranslations, where the flags data is stored. Much better! Your life will be easier if you have a small C/C++ API. Mr. Stradivarius talk 12:54, 10 July 2013 (UTC), We have {{WikiProject Lua/header}} that does the header tabs (I started). I would use them again if needed. To maintain similarity with other sandbox pages (in template space and user space), I propose: If we agree on this, we can encourage/discourage patterns. For example, Module:User:Mr. Stradivarius/sandbox2 produces the right result when used via invoke from User:Mr. Stradivarius/Sandbox, but when I use the code = p.test() in the debug console I get the error "Lua error at line 4: attempt to index local 'frame' (a nil value)." Needs study to guarantee correctness! To do this it calls the Lua bytecode compiler and then it converts the bytecode to C. For each function in the module, the code generator produces an appropriate function header and then it iterates over the functions bytecodes, outputting a block of C code for each instruction. sign in ), The disadvantage of course is that bugfixes in modules like Redirect don't get passed on. Prompt and friendly service as well! The problem with 3rd party bindings is that they usually tend to get unmaintained or only support a specific version of the library. Extra arguments are thrown away; Otherwise false. I'd rather see useful LUA links. WebYou can call a template from a Lua module using frame:expandTemplate. I've created a new request page for Lua scripts at Wikipedia:Lua requests. Comments appreciated. 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? There are still a few things I'm not sure about, though. WebIt's more terse, though at the expense of the function call overhead. In Chapter 16 we will discuss such calls Youre unlikely to run into performance issues, unless youre making a AA/AAA game or a complex simulation program. That's a bit of boilerplate code that I've been using in all the modules I write. 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). That is partly about performance but mostly about engine architecture. 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. 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. Is this a problem in my module or in Scribunto? if u can help me)I imported Module:Citation, Module:Citation/CS1/Configuration, Module:Citation/CS1 in bn.wikipedia. While still largely relevant for later versions, there are some differences.The fourth edition targets Lua 5.3 and is available at Amazon and other bookstores.By buying the book, you also help to support the Lua project. Theyre mostly written in C/C++ and only expose a bunch of Lua functions/tables to the user. Calls the concat function with the arguments Go and Lua and prints the resulting string to stdout. Its neat. Will your logo be here as well?. I just quickly sorted out the present Lua modules to Wikipedia:Lua/Modules/Overview. 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. 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. This makes dependencies between files hard to track and require you to manually execute some_class.lua before you can execute script.lua. Hex (? with nil arguments removed. 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. --Iantresman (talk) 00:06, 12 December 2013 (UTC). That would only apply to your contributions though, not to later modifications made by other editors. 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. 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. 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. -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). Integrating it with CMake is somewhat trickier. Hence, passing 2,000 parameters runs 3 seconds, 4,000 parameters runs 13 seconds, or 6,000 parameters run 27 seconds. This doesn't, which I was hoping would be equivalent: And, how do I do the reverse, and convert mw.site.currentVersion to the string "mw.site.currentVersion"? If nothing happens, download GitHub Desktop and try again. The downside is it will incur a small performance impact every time a new page of callframes is allocated. -- Sameboat - (talk) 07:07, 18 March 2013 (UTC), Thank Dragons flight for clearing something for me. In the first case, we use a function call as a statement; It may sound like asking to be babysat or spoon-fed, but I'm totally stuck. 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). 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. After the function call, . Yes, you can replace built-in functions because they are simply functions accessed from global variables. Writing code like this will become better with new #embed directive in future C/C++ versions, e.g. Thanks. Its fast. --Iantresman (talk) 18:29, 7 December 2013 (UTC), I used to be an above average template editor, making significant contributions to even such intricate template as Ambox and Fix. Have there been any major incidents yet? -- Gets args.rowtype1, args.rowtype2, etc. There was a problem preparing your codespace, please try again. Within C and C++, some comp However, sometimes that is just not enough and an embedded language can be the solution. 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. d ), You dont need a specialized IDE or tools to write Lua comfortably. Affects Lua, templates & parser functions: Again, the time-delay overhead, to pass thousands of parameters, not only affects the Lua #invoke interface, it extends the same exponential time-delay slowdown in passing parameters to templates as well as "|x=" branch-choices in a #switch function (which also runs 27 seconds to process 6,000 branches). This is a matter of implementation of the compiler or runtime (and its options) and cannot be said with any certainty. It Is Me Here t / c 15:08, 3 September 2013 (UTC). as it does in a multiple assignment: You dont need to compile Lua code, which means that you can change parts of your program/game logic without recompiling and even without reloading your program. You can do procedural, functional, OO programming. I am trying to implement {{Horizontal timeline}} as a module. These snippets of Python and Lua are roughly equivalent. The fact that even an IP user may edit the module namespace suggests that it must be really stable and secure. 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. after imported i find error in article with this Category:Pages with script errors. 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. See discussion at Village Pump (policy)#Protection and management of scripts?. In the example bellow sayHello function is first defined, and then called in the second call to DoString. It can do everything youd ever want from Lua and even more. For example, check Special:WhatLinksHere/3000 United States Census. I would generally recommend to avoid making high volume calls into Lua. but this fact has no relevance to Lua programmers. You can divide up your code into separate functions. ( 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++. You can learn about how to use Lua C API here (or in the latest version of Programming in Lua) - the online version is written for Lua 5.1 and some things have changed since 5.1, but most concepts have stayed the same. 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. Requires all Lua files in a given directory. The Lua version has some differences from the current template, so I would like to get others' comments before making the switch.
What Does Reinvest In Security Mean,
How Tall Was Michael Jordan At 10 Years Old,
John Dunsworth Cause Of Death,
Spencer Petras Parents,
Good Pizza, Great Pizza Stewards Challenge Goat,
Articles L