This code is OK (calling C++ from Lua is cheap): This code is not that good (calling Lua from C++ is slow): Profile first. 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. Often the linked module contains bells and whistles that aren't really necessary; why not bring it into the module and slim it down? Can do a lot of automagic and save you from writing tons of boilerplate code, which you need to do if you use other bindings or Lua C API. (At least script error should be shown when print function is detected.) 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. 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. Johnuniq (talk) 02:22, 25 June 2013 (UTC). In Lua, all arrays are 1-indexed, however t[0] is still valid but that would result in the lenght of the array to be off-by-one. Lua Performance Tips If those restrictions are not a problem, the new tester provides a convenient way to set up tests on any page, for example: If the above tests were at page "Template:Example/tests", the following would insert a table showing the results of expanding each template and comparing its output with the expected text. Functions used by a Lua program can be defined both in Lua and Clearly it's worth thinking about ways to reduce this impact as much as possible. Result #3 works correctly. Needs study to guarantee correctness! Hex (? Iterative multi-file loader, used to load all Lua modules in a directory and return them as one table. Right now I'm putting ratings on the documentation subpages, which I think is what someone suggested before at one point for categories. Keep your global state to a minimum and variable scope as small as possible. --Iantresman (talk) 00:06, 12 December 2013 (UTC). How much do function calls impact performance? 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. {{. You can find Luas reference manual here. -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). WebThe Lua interpreter offers two hooks for debug purposes: typedef void (*lua_CHFunction) (lua_Function func, char *file, int line); extern lua_CHFunction lua_callhook; typedef void (*lua_LHFunction) (int line); extern lua_LHFunction lua_linehook; The first one is called whenever the interpreter enters or leaves a function. Toohool (talk) 18:13, 15 March 2013 (UTC). For example (C++ functions have cpp postfix): Ask yourself: do all these functions need to be in C++? Providing global relocations solutions, storage and warehousing platforms and destruction plans. Is there a way to obtain a list (array) of all pages with a prefix (e.g. It would be a bit odd. This concept might be extended to support more than one memory location: 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). 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. It has a GNU Make build, so building it is easy. and expressions in Lua. Please don't take those *personal* suggestions as a criticism to Wikipedia:Lua. For optional arguments the L.Opt(n int, default T) functions can be used. sol2 is a fantastic library which Ive used for many years. 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. Where I see this is commonly done is in the templates which return links to the archives of talk pages. 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). :P Anyway, I have taken that idea and added some parameter checking and some documentation, and called it Module:User:Mr. Stradivarius/PrefixIndex. lua.CanConvToString(v LValue) - True if LString or LNumber. The general method that has been used is to assume a format for the page archive name and then test for the existence of all such possible pages using {{#ifexist:}}. may be relevant to this problem. thank you. 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. 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. 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'});. Embedding Lua in Go Johnuniq (talk) 22:58, 10 January 2014 (UTC). What am I doing wrong? However, the basic API is quite simple, and the advanced features deserves its own post. its number of parameters. :) Wnt (talk) 02:58, 6 January 2014 (UTC). 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++. --Iantresman (talk) 13:14, 8 December 2013 (UTC). Have there been any major incidents yet? Otherwise empty string. DePiep (talk) 23:55, 21 May 2015 (UTC). 1 time resty -e 'ngx.re.find ("hello, world. Lua 5.4 Local declaration of (built-in) Lua functions to reduce Note: Lua isnt zero-indexed, so the first function argument is fetched with L.ToInt(1), second argument with L.ToInt(2). Can they be rewritten in Lua, perhaps? Lua is written in ANSI C, so it can compile almost everywhere. Please comment over there if you're interested. It behaves somewhat like a stack as in [Forth] but with one element. At Module:DisplayLuaTableContents I see numerous loops as, , but I learned that strings are immutable and hence this assignment is rather costly. 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"). Is this the right place for Lua programming queries? Exposing Go functions to Lua is essential to create custom a custom API. In our C++ file, we need to define the consoleLog function that it will receive from JavaScript. To get the perf bit The simplest way to time some Lua code is to use the time command with the resty command. Hence, passing 2,000 parameters runs 3 seconds, 4,000 parameters runs 13 seconds, or 6,000 parameters run 27 seconds. If you'd like to make a request, please do that too! 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. Please It may sound like asking to be babysat or spoon-fed, but I'm totally stuck. Makyen, does that look something like what you wanted? 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 Because the property from Wikidata is not updated by mw.message, I decided to try it on one of those pesky Special: pages that abolish caching. XLua Documentation - Taloncrossing See http://godoc.org/github.com/yuin/gopher-lua#LTable for the LTable Go API. L.DoString runs the Lua code in the VM. Village Pump (policy)#Protection and management of scripts? Lua doesnt impose one style of writing code on you. These timings are likely different on different processor Thats basically all youll ever need to know about Lua. Is these Lua performance tips still accurate? : r/lua - Reddit 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. Formula: I'd like to include some of the functionality of module:Page in my module, without having to reinvent the wheel. It relies on Module:Sandbox/QuimGil/Flagicon, which provides the logics, and Module:Sandbox/QuimGil/FlagTranslations, where the flags data is stored. Your life will be easier if you have a small C/C++ API. Much better! It doesnt have many gotchas. We really ought to decide, flip a coin, something so we get this sort of stuff to a predictable spot. -- Sameboat - (talk) 07:07, 18 March 2013 (UTC), Thank Dragons flight for clearing something for me. Hard working, fast, and worth every penny! Perhaps li in a list or tr in a table? Lua Work fast with our official CLI. Link/Create testcases link for Module pages. What do people think? That way it would be obvious straight away which templates have been converted, and would help advertise the fact that we have this neat new programming language available and that we need people to convert existing templates over. Can someone make a nice SpecialPages adjustment? Many Git commands accept both tag and branch names, so creating this branch may cause unexpected behavior. E.g. Its simple. 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? For example, I might want to process the posts on a talk page, and add some extra formatting. In the first case, we use a function call as a statement; extra parameters get nil. I have used the mw.title library with a call like mw.title.new(page_name):fullUrl({uselang=lang}), but mw.title.new() is marked as an expensive function so I would like to known if there are alternative.--Moroboshi (talk) 07:06, 18 May 2013 (UTC), Is there a way to use the Mediawiki API inside Lua? Toohool (talk) 17:18, 27 March 2013 (UTC), I have another related question. There are a number of To(n int) functions available. I think that this is less effective than it could be, however. Incnis Mrsi (talk) 22:46, 9 January 2014 (UTC). 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. I've been trying to get to grips with the concept of frames, and I think I'm almost there. 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.
Ross Funeral Home Littleton, Nh Obituaries,
13837274d2d51515e41 Hydrogen Fuel Cell Federal Tax Credit 2022,
Latest Obituaries Berlin New Hampshire,
Naturopathic Doctor Torrance,
Jos A Bank 1905 Vs Traveler Suits,
Articles L
