hasmetafield

Returns true when an object's raw metatable contains the field.

Syntax

hasmetafield(object: any, key: string) -> boolean

Parameters

Parameter	Type	Description
`object`	`any`	The object value used by the call.
`key`	`string`	The key or secret used by the operation.

Returns

Type	Description
`boolean`	True when an object's raw metatable contains the field

Description

hasmetafield is part of the Metatables library. Metatable helpers operate below normal Lua protection: they read raw metatables, replace metamethods and inspect namecalls.

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

Example

print(hasmetafield(setmetatable({}, { __index = function() end }), "__index"))

Notes

Metatable changes are applied directly to the live object.