several interesting constructions, Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. Attempt to call method 'SetBackdrop' (a nil value) Thank you so much. How to follow the signal when reading the schematic? You can iterate through every step of your preamble to find exactly where the problem starts. the code builds just fine, but when I run it I get the following: Note: I have seen the many other questions on this error, but they all deal with working directly in Lua, as opposed to with the C api. It turns out I had already fixed this exact problem last year in, Overwritten global Lua variables "attempt to index a NN value", How Intuit democratizes AI development across teams through reusability. Sign in These packages are in the default global scope within ngx_lua and are always available within ngx_lua directives. Function Environments Explained - Community Tutorials - DevForum | Roblox Is it plausible for constructed languages to be used to affect thought and control or mold people towards desired outcomes? Kahras. it inherits its environment from the function creating it. The first line includes the path to the file that is causing the error - addons/my_addon/lua/autorun/server/sv_my_addon_autorun.lua, Afterwards, the line that's producing the error - sv_my_addon_autorun.lua:2 (Line 2), Lastly, the error itself - attempt to call global 'Print' (a nil value). How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. init.lua:125: attempt to call field 'setup' (a nil value) #2599 - Github I think it works, but when I start and click the first menu, I click the options I want to activate tells me script ended : Your code is quite messy. You ended the function in this very weird situation. vegan) just to try it, does this inconvenience the caterers and staff? Simplified - If the error is inside a function/chunk of code that is called from somewhere else, it will state where the code is called from. Lua - attempt to call global 'contains' (a nil value) Mythic_hospital billing problem - Discussion - Cfx.re Community In my case I tried to call the function getinfo() from the table debug (which is built into Lua and should be available anywhere), but when invoking it Lua found a boolean value (true or false) instead. Can airtags be tracked from an iMac desktop, with no iPhone? all functions it defines afterward will share this same environment. You don't really understand when to add "end" in the script. function myfunction () n = n/nil end function myerrorhandler( err ) print( "ERROR:", err ) end status = xpcall( myfunction, myerrorhandler ) print( status) When we run the above program, we will get the following output. That may sound strange at first; after all, the goal of a table of global variables is to be global. How is Jesus " " (Luke 1:32 NAS28) different from a prophet (, Luke 1:76 NAS28)? Where does this (supposedly) Gibson quote come from? The function contains need to be defined for it to be called. Since you get the answer but yet you still get an error. Why is there a voltage on my HDMI and coaxial cables? Attempt to call global 'GetContainerNumSlots' (a nil value) #170 - Github I like you. Note: I have seen the many other questions on this error, but they all deal with working directly in Lua, as opposed to with the C api. to your account. Lua 5.0 ameliorates this problem by allowing each Is there a single-word adjective for "having exceptionally strong moral principles"? They also seem to imply that the problem is that the print function was never defined. Thanks again, you are welcome Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2. You.com is an ad-free, private search engine that you control. Asking for help, clarification, or responding to other answers. I guess you could try to work around it with tricks like local this = self and similar, but that might not be applicable in all cases, and may cause some problems due to how framework may parse the XML. always results in attempt to call nil value, why is that? Is it possible to rotate a window 90 degrees if it has the same length and width? World of Warcraft Addons, Interfaces, Skins, Mods & Community. How do I connect these two faces together? init.lua:125: attempt to call field 'setup' (a nil value), https://github.com/williamboman/nvim-lsp-installer#setup. Can airtags be tracked from an iMac desktop, with no iPhone? the code builds just fine, but when I run it I get the following: [string "print ("lua")"]:1: attempt to call global `print' (a nil value) hello. . Staging Ground Beta 1 Recap, and Reviewers needed for Beta 2, Attempt to call global "Sicherheitskreis" (a nil value ) stack traceback, Lua: attempt to call global 'rectangle_draw' (a nil value), lua attempt to call global write (a nil value), Lua trouble: attempt to call global 'unpack' (a nil value), Love2D / .lua - attempt to call global (a nil value). The first line will print the table address - as long as there still is a table - the second line will cause an error and stop the compilation. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. It is very likely that this observation indicates that the builtin table debug has at some point been overwritten with a boolean, either in your preamble or - as a bug - in a package. Thanks for the support, I have another mistake. What does this means in this context? $ lua test3.lua var: nil loval_var: nil after set var: Hello, global variable loval_var: nil. . The function contains need to be defined for it to be called. You can virtually put it back though the __index metamethod. Is there a single-word adjective for "having exceptionally strong moral principles"? 1 Answer. If the error happens serverside, the text color will be blue. between the code definition and the load call, I get this: So if you look at both return values, you can see if the string was valid Lua code before trying to call it. Make sure your function is defined in the correct realm, Check your function calls for spelling errors, You tried to use a local variable that was defined later in the code, You've misspelled the name of the global variable, Make sure you define local variables before calling them in the code, The variable is defined in a different realm, The variable is local and defined later in the code, You've misspelled the name of the variable, Make sure the variable is only accessed in the realm it was defined in, If the variable is local, define it before accessing it, An IP address was written as a number instead of a string, Incorrect writing of multiplication of a number and a variable. My code is GPL licensed, can I issue a license to have my code be distributed in a specific MIT licensed project? "Frameworks" like the WoW Add-On Framework often bring a new flavour to the language, so my comment may be wrong in your case. I'm on the current Ubuntu version's repository version with, When trying to find out who is responsible for changing global variables in Lua, it is sometimes useful to temporarily assign a metatable to the global table. Q&A for work. Not the answer you're looking for? 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 nature of simulating nature: A Q&A with IBM Quantum researcher Dr. Jamie We've added a "Necessary cookies only" option to the cookie consent popup. With the code you have now Lua cannot find add because it was never placed in the globals table (that is why you get the nil message). Why is this sentence from The Great Gatsby grammatical? Find centralized, trusted content and collaborate around the technologies you use most. How can I explain to my manager that a project he wishes to undertake cannot be performed by the team? But since you haven't provided the full code this might just cause the error to shift elsewhere. There are many reasons for why a Lua error might occur, but understanding what a Lua error is and how to read it is an important skill that any developer needs to have. Not the answer you're looking for? Lua - attempt to call global 'getPlayerWeapon' (a nil value) LUA variable parameters "Attempt to index global 'arg' (a nil value Learn more about Teams 1.2.3, 2f). How to use NVIM_APPNAME to change nvim config : r/neovim Wait C++ is tougher than lua. setting the debug variable to false as its default value, which is then used in a function outputting debug information. Critical issues have been reported with the following SDK versions: com.google.android.gms:play-services-safetynet:17.. . try caching it as a local first, especially if your using module: i think, you should include a library file at first, like i.e. So when in the script I create the second menu, with the function that you gave me, second_Menu, the script reads it. Using Kolmogorov complexity to measure difficulty of problems? Thanks for contributing an answer to Stack Overflow! If it's menu code, it will be green (not a typical scenario). For example is not equal as C++ language. Can archive.org's Wayback Machine ignore some query terms? Site design / logo 2023 Stack Exchange Inc; user contributions licensed under CC BY-SA. What is a word for the arcane equivalent of a monastery? Is there a proper earth ground point in this switch box? To find the culprit it is useful to insert. The reference to the current object in Lua ist called self.When you call a function with : instead of ., the object you're calling this function on is implicitly passed as the first parameter.If you define a function as something:yourfunction() instead of something . Does Counterspell prevent from any further spells being cast on a given turn? The LUA interpreter for WIN package is Luajit, while the Unity is used in Lua5.1. If you press any button, nothing triggered. What sort of strategies would a medieval military use against a fantasy giant? What difference does it make if it's first cached as local, please? Let's say we wanted to print a function environment: local a = 5 b = 3 print(getfenv(0)) Just as explained above bis accessible but ais not. Learn more about Stack Overflow the company, and our products. and so on. Is it suspicious or odd to stand by the gate of a GA airport watching the planes? It is interpreted as a hash table in the C boundary (struct Table*). Lua 'require' nhng tp ch c trong b nh - VoidCC They also seem to imply that the problem is that the print . Description: You tried to perform arithmetic (+, -, *, /) on a variable that cannot perform arithmetic. Is there a proper earth ground point in this switch box? Below the error, we have the trace of the function. I always get this error: ''attempt to call global 'contains' (a nil value)''. If you want to use a library that uses Overwritten global Lua variables "attempt to index a NN value" Lua processes and executes files line by line so the order you define them and use them can be important. I can see that similar questions has been asked, however I'm not really that familiar with lua coding. I'm interesting, if who know what is the problem of this code bellow. stalker script LUA ERROR attempt to index local 'outfit_now' (a nil value) Hot Network Questions If a law is new but its interpretation is vague, can the courts directly ask the drafters the intent and official interpretation of their law? Asking for help, clarification, or responding to other answers. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Remember, only add end when you want to close a function / for loop/ while loop. So do not stop at here, keep move on. If you preorder a special airline meal (e.g. I think I may have taken my mouth too full, im a hobby C# coder, and thought I may be able to search my way through fixing this addon but looks like its more complicated than I anticipated. Fortunately my preamble is very modular, so I could circle in in a "bisect" way. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. in your preamble as suggested in this comment. Are there tables of wastage rates for different fruit and veg? To learn more, see our tips on writing great answers. They are getfenv()and setfenv(). Making statements based on opinion; back them up with references or personal experience. snukers . I have named a menu with 3 options, I choose the first one and I open a menu with the function dd.multiChoice, I choose the items I want to activate and give me this error. Does Counterspell prevent from any further spells being cast on a given turn? (I strongly recommend never to do this outside of debugging and to let the metatable work as close to a normal tableas possible, otherwise you get all kinds of weird behavior.). For example : output = nil (Lua can't read what is a because it didn't declare before printing it), output = 10 (Lua know a = 10 , so it print 10). TeX - LaTeX Stack Exchange is a question and answer site for users of TeX, LaTeX, ConTeXt, and related typesetting systems. I've tried playing around with the "this" statement but I'm not really sure what to do, and thought I'd see if anyone of you bright people in here would know what's going on. Description: You tried to perform arithmetic (+, -, *, /) on a global variable that is not defined. Minimising the environmental effects of my dyson brain. Trying to concatenate a number to a string without a space between the number and the operator. Connect and share knowledge within a single location that is structured and easy to search. When 'symbol2' is
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