islclosure

Overview of the iscclosure function.

Function Characteristics

This function is pure; it does not modify any data when called.

Function definition

function islclosure(closure: (...any) -> (...any)): boolean

High-Level Overview

Validates that the provided closure is implemented in Luau.

Low-Level Overview

The lua_iscfunction Luau C function is used, and the inverse of the return of it (!lua_iscfunction) is pushed onto the Luau stack as the result of this function.

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This function can be implemented as a debug.info/getinfo query. It can also be implemented as the negation of iscclosure, as if something is a C closure, it cannot be a Luau closure, and vice versa.