getprotos - Real Function Reference

getprotos(target: function | number): table

Aliases

debug.getprotos

Arguments

function | number

required

Lua function or stack level whose nested functions are returned.

Returns

table

One-based array table containing nested functions. Empty when none are present.

Example

Clone every nested Proto from a Lua closure into an array of new L closures.

local function outer()
    local function first()
        return "one"
    end

    local function second()
        return "two"
    end

    return first, second
end

local protos = getprotos(outer)

for index, proto in ipairs(protos) do
    print(index, type(proto))
end

print(#debug.getprotos(outer))