API getfenv

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Returns the current environment in use by the function.

env = getfenv(f)

Arguments

f

function or number - A function to retrieve the environment of, or a numeric level of a function on the call stack starting from 1.

Returns

env

table? - The environment assigned to the function.

Details

• If the environment of a function has a metatable applied with the __environment field set, this function will instead return the value assigned to that key.
• This function always returns nil if called inside a __gc finalizer.

Patch changes

Patch 10.1.0 (2023-05-02): Now returns nil if called inside a __gc finalizer.
Patch 1.1.0 (2004-11-07): Added.