iscclosure

Returns true for C closures.

Syntax

iscclosure(fn: function) -> boolean

Parameters

Parameter	Type	Description
`fn`	`function`	The function or callback to use.

Returns

Type	Description
`boolean`	True for C closures

Description

iscclosure is part of the Closures library. Closure helpers operate on live Luau function objects. Hooks redirect future calls through the replacement closure and return the previous implementation.

The call is a predicate: it inspects the current state and returns a boolean without modifying anything.

Example

print(iscclosure(print), iscclosure(function() end))

Notes

Closure operations act on live Luau function objects; installed hooks remain active until restored.