Setenv() getenv() What's this?

Help and Feedback Scripting Support
#1

Anyone knows what this 2 functions are for?

myVariable = "Hello, environments" -- Note: a global variable (non-local)
local env = getfenv()
print(env["myVariable"]) --> Hello, environments

It’s like a _G without calling _G? :thinking::confused:

A Technical Overview of the 'fenv'
#2

Manipulation of the stack is one of those things I Believe is generally undertaken by advanced programmers who understand everything else and are looking for something new to learn.

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#3

You’ve answered your question. getfenv() returns a table of the global environment of your script.

When you do

a = 5
print(a)

you are actually doing

getfenv().a = 5
print(getfenv().a)

Using getfenv() is discouraged though. It disables some of Luau’s optimizations.

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How to get the "script" variable from a function?
#4

Hi,

Each and every function in LUA has an “environment” what these functions do is get their global environment.

Examples of a global variable;

  • wait
  • game
  • worksapce

Non-Global variables;

local Test = "Test"

To get the environment of your current script do this

GlobalVariable = "Hiiii"

local Env = getfenv()

print(Env.GlobalVariable)

Expected output

Hiiii

setenv() just sets the environment

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