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Aug 14, 2013 · You may have noticed the use of "local" in the above declarations. "local" simply states that the variable being defined should only be used in this script or function. You only need to write local for the first time you set a variable, then it will assume every other time you use the variable afterwards it is the local variable.
Mar 21, 2014 · str = “String theory, get it” -- This is a global string variable local pauline = 9 --A number variable --Now I am going to define a function, using a new keyword function function foo(bar) print(bar) –- [[bar is a parameter, which can be any type of variable. This function will attempt to print that parameter]] end -- end is another keyword.
A local function is similarly defined using local (e.g. local function something()), and a global is without the 'local' keyword. The problem is you need to ensure that the global function is 'registered' in the globals. The best way to do this is to run the program file it is constructed in. Then, you should be able to access it in any other ...
Mar 25, 2014 · Whenever you see brackets after a variable name, you know it's a function. For our first example, we will write a simple function that will use write() function MyFunction(Str) write(Str) end MyFunction("I am writing text to the screen!\n") If you have successfully written and executed this script, it should write "I am writing text to the ...
basically, lua will keep track of a huge amount of data using the "global" table _G (I think that's the name) that is referenced and written to for global variables. so if you set a global variable in one program, run it. and then try to use a different variable in another program, you'll get what was set in the first.
Jun 11, 2024 · Use local variables as much as possible, including local functions. You should avoid global variables as much as possible, as they are slower, aren't automatically garbage collected, and can cause funky errors when other code uses the same variable name.
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Dec 9, 2020 · Keep in mind that the list isn't guaranteed to be any specific size, as the user might forget an argument or something, so you'll need to remember to check the length of the list using #args to make sure it's the correct size, along with making sure that the input the user gives makes sense (ex. you don't try and use a word where a number is meant to be).
