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setfenv

<function name="setfenv" parent="Global" type="libraryfunc"> <description>Sets the environment for a function or a stack level. Can be used to sandbox code.</description> <realm>Shared and Menu</realm> <args> <arg name="location" type="function">The function to set the environment for, or a number representing stack level.</arg> <arg name="environment" type="table">Table to be used as the the environment.</arg> </args> <rets> <ret name="" type="function">The function passed, otherwise nil.</ret> </rets> </function> <example> <description>Use setfenv to create a sandbox</description> <code> local sandbox = {} -- Define a print function in the sandbox sandbox.print = function(s) return print("[Sandbox] " .. s) end local sandboxedCode = function() print("Hello") string.format("%s", "error please") end -- change environment for sandboxedCode to the sandbox table setfenv(sandboxedCode, sandbox) sandboxedCode() </code> <output> ``` [Sandbox] Hello Script:11: attempt to index global 'string' (a nil value) ``` </output> </example>

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