Debug

getconstant

Returns one constant from a Lua function or stack level by one-based index. target must be a function or stack level number. Invalid stack levels raise “Level out of range”. Non-function and non-number targets raise a type error expecting “function or number”. C closures raise “Lua function expected”. Indexes below 1 raise “Constant index starts at 1”, and indexes past the available constants raise “Constant index out of range”. Function and table constants are returned as nil. debug.getconstant is an alias.

getconstant(target: function | number, index: number): any | nil

Aliase

debug.getconstant

Argumente

function | number

erforderlich

Lua function or stack level whose constants are inspected.

number

erforderlich

One-based constant index.

Rückgaben

any | nil

Constant value at the requested index, or nil when that constant is a function or table.

Beispiel

Read a one-based Proto constant from a Lua closure.

local function target()
    return "ready"
end

local value = getconstant(target, 1)

print(value)
print(debug.getconstant(target, 1))

​Aliase

​Argumente

​Rückgaben

​Beispiel

Aliase

Argumente

Rückgaben

Beispiel