How would i get variable name instead of the variable value?

Help and Feedback Scripting Support
#1

Making a debounce function with the callback, i need to figure out how to actually get the variable name.

function DebounceBool(boolvar,bool,callback)
	local boolvariable = boolvar -- this thing actually says value 
								-- instead of the variable itself
	repeat
		callback()
		print(tostring(boolvariable)..' Debounced')
	until boolvariable == bool
	boolvariable = bool
end
1 Like
#2

You can show the full script? or the script that calls that function?
I recommend to do another variable to the function called “boolname” so something like that, that variable storages the variable name

#3 
if debounce.attacking == false and entity.Humanoid.Health > 0 then
			if math.abs(relativePos.X) <= npc.Hitbox.Size.X * 1 * 0.6 and math.abs(relativePos.Z) <= npc.Hitbox.Size.Z * 1 * 0.6 then
				DebounceBool(debounce.attacking,true,function()
					local atktimer = stats.atktimer
					local idletimer = stats.idletimer
					local length = stats.lengthofAtk
					animstring = 'atk'
					debounce.walking = false
					task.delay(atktimer,function()
						onHit()
					end)
					task.delay(length,function()
						debounce.atkended = true
						debounce.walking = true
					end)
					task.delay(idletimer,function()
						debounce.atkended = false
						debounce.attacking = false
					end)
				end)
			end

		elseif debounce.atkended == true and math.abs(relativePos.X) <= npc.Hitbox.Size.X * 1 * 0.6 and math.abs(relativePos.Z) <= npc.Hitbox.Size.Z * 1 * 0.6 then
			animstring = 'idle'
		end

As expected it makes the bool false and the script wont spam.
In reality it says “true = true” then spams the callback

dont ask why i made this function cause i got lazy with if debounce == false then

#4

You can’t, but because you already know the variable’s name to type it in, you could do;

function DebounceBool(boolvar,bool,callback, debugname)
	repeat
		callback()
		print(debugname..' Debounced')
	until boolvar == bool
end

And call it like this;

DebounceBool(MyBooleanVariable, true, somefunction, "MyBooleanVariable")
#5

Aw it would be interesting if we could get the variable name instead of the value…

#6

There are other problems with doing so, such as it being easier to make exploits etc.

#7

Why would you need to get a variables name when… you need it in the first place to even use the variable?

#8

You can if you declare variables globally and use the function environment functions; getfenv, setfenv to get/set them.

s = "Hello world!"
local env = getfenv(0)
for k, v in pairs(env) do
	if v == "Hello world!" then print(k) break end --'s' is printed.
end
3 Likes
#9

Interesting! Thanks!

s = {'bool1',true}
local env = getfenv(0)
for k, v in pairs(env) do
	if type(v) == 'table' then
		if v[1] == 'bool1' then
			print(k..' = '..tostring(v[2]))
		end

	end
end

-- s = true
#10

Note than getfenv/setfenv will disable certain Luau optimizations.

cc: @Forummer you should probably add a note to your reply as well.

#11

This is true, optimizations such as inline caching and global access chains are disabled for functions that have had their environments read/written, additionally, the loadstring global function will disable these optimizations. This deoptimization process can be mitigated by declaring globals as upvalues (non-local variables) to functions that have their environments read/written.

local Print = print --Integrate 'print' global function into local environment.
local Pairs = pairs
String = "Hello world!"
local env = getfenv(0)
for k, v in Pairs(env) do
	if v == "Hello world!" then Print(k) break end --'String' is output.
end

It should be noted that these optimizations are insignificant in the grand scheme of things.