Debug

setupvalue

Replaces one upvalue in a Lua function or stack level by one-based index. Invalid stack levels raise “Level out of range”, non-Lua functions raise “Lua function expected”, indexes below 1 raise “Upvalue index starts at 1”, and indexes past the available upvalues raise “Upvalue index is out of range”. debug.setupvalue is an alias.

setupvalue(target: function | number, index: number, value: any)

Алиасы

debug.setupvalue

Аргументы

function | number

обязательно

Lua function or stack level whose upvalue is modified.

number

обязательно

One-based upvalue index.

any

обязательно

New value for the upvalue.

Пример

Replace one upvalue in a Lua closure or stack level.

local captured = "before"

local function target()
    return captured
end

print(target())

setupvalue(target, 1, "after")
print(target())

debug.setupvalue(target, 1, "done")
print(target())

​Алиасы

​Аргументы

​Пример

Алиасы

Аргументы

Пример