Question about "return"

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#1

Question

Hello, I am wondering if a lua function requires a return? The functions I am referring to are what you would call a void function in C# or Java so a return would just be there to prevent any weird errors from happening.

For example

local function ChangeNumber()
    workspace.NumberValue.Value = 5
end

I am wondering if I need to do this:

local function ChangeNumber()
    workspace.NumberValue.Value = 5
    return
end

I currently have not been putting returns in “void” functions but I have been getting some weird bugs in my games. I am wondering if this is the cause.

#2

Lua automically puts a return at the end for every function so they end after completion, so you don’t need to put a return there if you’re not returning anything

1 Like
#3

If you want the function to return a certain value, then you need to use the return with the return value right after it. Otherwise, all functions will automatically terminate after they are completed.

#4

In lua there is no need to manually add a return in a function unless you need to return something for example:

function test()
return 5
end

local value = test()
Print(value) --this prints 5

also yes functions without return automatically end when its finished, and automatically “return” nothing

https://www.lua.org/pil/4.4.html

#5

No, returns are not required. If you leave out the return statement, the function returns nil.

#6

you can do something like:


function aFunction()
for i,v in next, game.Players:GetPlayers() do

retun v.Name
end
end

print(aFunction()

return is like break (stopping functions) and returning an value, nil, object,end and more

#7

Ok, thanks!

This post was too short…