Scripting Helpers is winding down operations and is now read-only. More info→
Log in to vote
0
Why can't I return a function from a RemoteFunction?
In a script inside a RemoteFunction, which is inside workspace, I have the following:
1 | function script.Parent.OnServerInvoke(_) |
2 | return function() |
3 | print("hi"); |
4 | end; |
5 | end; |
Then, inside a LocalScript, which is inside the StarterGui, I have the following:
1 | local function loadstring(src) |
2 | return workspace.RemoteFunction:InvokeServer(src); |
3 | end; |
4 | loadstring()(); |
This causes the following error:
1 | 12:35:23.263 - Players.Player1.PlayerGui.LocalScript:4: attempt to call a nil value |
2 | 12:35:23.263 - Stack Begin |
3 | 12:35:23.263 - Script 'Players.Player1.PlayerGui.LocalScript', Line 4 |
4 | 12:35:23.263 - Stack End |
What's wrong with this application?
0
Probably to prevent that loadstring hack where you can just return a function from the server. But there might be an actual reason. jakedies 315 — 10y
1 answer
Log in to vote
0
As I'm not quite positive why this is happening I will give two posibilities.
1: The return function is actually returning the return value of the function due to some strange evaluation priority. 2(more likely). I'm fairly sure that a function when defined takes a snapshot of the variable environment which is certainly a security concern if you're moving this function to the client. Why ROBLOX made the return value nil rather then just erroring when a function is returned I don't know.