Throws an error if the provided `value` is `false` or `nil`. If the
assertion passes, it returns all values passed to it.

```lua
local product = 90 * 4
assert(product == 360, "Oh dear, multiplication is broken")
-- The line above does nothing, because 90 times 4 is 360
```


assert

value

The value that will be asserted against.


errorMessage

The text that will be shown in the error if the assertion fails.


Throws an error if the provided `value` resolves to `false` or `nil`.


Performs an operation on the Lua garbage collector based on the specified
option.

Roblox's Lua sandbox only allows the "count" option to be used, so none of
the other standard options are available.

The "count" option returns the total memory in use by Lua (in kilobytes).


collectgarbage

operation

The name of the operation that should be performed by the garbage
collector.


Performs the specified operation of the garbage collector.


Terminates the last protected function called and outputs `message` as an
error message. If the function containing the error is not called in a
protected function such as `pcall()`, then the script which called the
function will terminate. The error function itself never returns and acts
like a script error.

The `level` argument specifies how to get the error position. With level
`1` (the default), the error position is where the error function was
called. Level 2 points the error to where the function that called error
was called; and so on. Passing a level `0` avoids the addition of error
position information to the message.


error

message

level

The level of information that should be printed. Defaults to 1.


Halts thread execution and throws an error.


Returns the current environment in use by the caller, as a dictionary.

- If provided with a function, the environment of the function will be
  returned.
- If provided with an integer, `Global.LuaGlobals.getfenv()` will provide
  the environment of the function at the provided stack level: Level 1 is
  the function calling `Global.LuaGlobals.getfenv()`. If `stack` is `0`,
  `Global.LuaGlobals.getfenv()` returns the global environment of the
  current script. When using `Global.LuaGlobals.getfenv()` to get the
  current environment of a script, it will return the same table every
  time within the specific thread.


getfenv

stack

The stack level (int) of the environment to be returned; or the
function whose environment will be returned.


Returns the current environment in use by the caller, as a dictionary.


Returns the metatable of the given table `t` if it has one, otherwise
returns nil. If `t` does have a metatable, and the `__metatable`
metamethod is set, it returns that value instead.

```lua
-- Demonstrate getmetatable:
local meta = {}
local t = setmetatable({}, meta)
print(getmetatable(t) == meta) --> true
-- Make the original metatable unrecoverable by setting the __metatable metamethod:
meta.__metatable = "protected"
print(getmetatable(t)) --> protected
```


getmetatable

Returns the metatable of the given table.


Returns three values: an iterator function, the table `t` and the number
`0`. Each time the iterator function is called, it returns the next
numerical index-value pair in the table. When used in a generic for-loop,
the return values can be used to iterate over each numerical index in the
table:

```lua
local fruits = {"apples", "oranges", "kiwi"}
for index, fruit in ipairs(fruits) do
   print(index, fruit) --> 1 apples, 2 oranges, 3 kiwi, etc...
end
```


ipairs

A table whose elements are to be iterated over.


Returns an iterator function and the table for use in a for loop.


Loads Lua code from a string and returns it as a function.

Unlike standard Lua 5.1, Roblox's Lua cannot load the binary version of
Lua using `loadstring()`.

`loadstring()` is disabled by default. For guidance around enabling it,
see `Class.ServerScriptService`.


loadstring

chunkname

An optional chunk name for error messages and debug information. If
unspecified, Lua uses the `contents` string.


Returns the provided code as a function that can be executed.


Creates a blank `userdata`, with the option for it to have a metatable.


newproxy

addMetatable

Returns the first key/value pair in the array. If a `lastKey` argument was
specified then returns the next element in the array based on the key that
provided. The order in which the indices are enumerated is not specified,
even for numeric indices. To traverse a table in numeric order, use a
numerical for loop or `ipairs`.

The behavior of next is undefined if, during the traversal, you assign any
value to a non-existent field in the table. You may, however, modify
existing fields. In particular, you may clear existing fields.


lastKey

The last key that was previously retrieved from a call to next.


An iterator function for use in for loops.


Returns an iterator function, the passed table `t`, and `nil`, so that the
construction will iterate over all key/value pairs of that table when used
in a generic `for` loop:

```lua
local scores = {
    ["John"] = 5,
    ["Sally"] = 10
}

for name, score in pairs(scores) do
    print(name .. " has score: " .. score)
end
```


pairs

An array or dictionary table to iterate over.


Returns an iterator function and the provided table for use in a `for`
loop.


Calls the function `func` with the given arguments in protected mode. This
means that any error inside `func` is not propagated; instead, `pcall()`
catches the error and returns a status code. Its first result is the
status code (a boolean), which is true if the call succeeds without
errors. In such case, `pcall()` also returns all results from the call,
after this first result. In case of any error, `pcall()` returns false
plus the error message.


pcall

func

The function to be called in protected mode.


args

The arguments to send to `func` when executing.


Runs the provided function and catches any error it throws, returning the
function's success and its results.


Receives any number of arguments, and prints their values to the output.
`print` is not intended for formatted output, but only as a quick way to
show a value, typically for debugging. For a formatted output, use
`Library.string.format()`. On Roblox, `print` does not call `tostring`,
but the `__tostring` metamethod still fires if the table has one.


print

params

Any number of arguments to be outputted.


Prints all provided values to the output.


Checks whether `v1` is equal to `v2`, without invoking any metamethods.


rawequal

Returns whether `v1` is equal to `v2`, bypassing their metamethods.


Gets the real value of `table[index]`, without invoking any metamethods.


rawget

index

Gets the real value of `table[index]`, bypassing any metamethods.


Returns the length of the string or table, without invoking any
metamethods.


rawlen

Returns the length of the string or table, bypassing any metamethods.


Sets the real value of `table[index]` to a given `value`, without invoking
any metamethod.


rawset

The index to set in `t` to a specified `value`. Must be different from
nil.


The value to be set to a specified `index` in table `t`.


Sets the real value of `table[index]`, bypassing any metamethods.


Returns all arguments after argument number `index`. If negative, it will
return from the end of the argument list.

```lua
print(select(2, "A", "B", "C")) --> B C
print(select(-1, "A", "B", "C")) --> C
```

Returns the total number of arguments that were passed after the `cmd`
argument, which must be `"#"` to use `select` in this fashion.

```lua
print(select("#", "A", "B", "C")) --> 3
```

If `cmd` is a number, the function will return all values after that
index.

```lua
print(select(2, "A", "B", "C")) --> B C
```


select

The index of the argument to return all arguments after in `args`. or
must be "#".


Returns all arguments after the given index.


Sets the environment to be used by the given function. `f` can be a
function or a number that specifies the function at that stack level:
Level 1 is the function calling `setfenv()`. `setfenv()` returns the given
function.

If `f` is `0`, then `setfenv()` changes the environment of the running
thread and returns no values.


setfenv

Either a function or a number that specifies the function at that
stack level.


fenv

The function environment table to set for the specified function.


Sets the metatable for the given table `t` to `newMeta`. If `newMeta` is
nil, the metatable of `t` is removed. Finally, this function returns the
table `t` which was passed to it. If `t` already has a metatable whose
`__metatable` metamethod is set, calling this on `t` raises an error.

```lua
local meta = {__metatable = "protected"}
local t = {}
setmetatable(t, meta) -- This sets the metatable of t
-- We now have a table, t, with a metatable. If we try to change it...
setmetatable(t, {}) --> Error: cannot change a protected metatable
```


setmetatable

newMeta

If nil, the metatable of the given table `t` is removed. Otherwise,
the metatable to set for the given table `t`.


Attempts to convert the arg into a number with a specified base to
interpret the value in. If it cannot be converted, this function returns
nil.

The base may be any integer between 2 and 36, inclusive. In bases above
10, the letter 'A' (in either upper or lower case) represents 10, 'B'
represents 11, and so forth, with 'Z' representing 35. In base 10 (the
default), the number may have a decimal part, as well as an optional
exponent part. In other bases, only unsigned integers are accepted.

If a string begins with `0x` and a base is not provided, the `0x` is
trimmed and the base is assumed to be 16, or hexadecimal.

```lua
print(tonumber("1337")) --> 1337 (assumes base 10, decimal)
print(tonumber("1.25")) --> 1.25 (base 10 may have decimal portions)
print(tonumber("3e2")) --> 300 (base 10 may have exponent portion, 3 &times; 10 ^ 2)
print(tonumber("25", 8)) --> 21 (base 8, octal)
print(tonumber("0x100")) --> 256 (assumes base 16, hexadecimal)
print(tonumber("roblox")) --> nil (does not raise an error)
-- Tip: use with assert if you would like unconvertable numbers to raise an error
print(assert(tonumber("roblox"))) --> Error: assertion failed
```


tonumber

The object to be converted into a number.


base

The numerical base to convert `arg` into.


Returns the provided value converted to a number, or nil if impossible.


Receives an argument of any type and converts it to a string in a
reasonable format. For complete control of how numbers are converted, use
string.format. If the metatable of `e` has a `__tostring` metamethod, then
it will be called with `e` as the only argument and will return the
result.

```lua
local isRobloxCool = true
-- Convert the boolean to a string then concatenate:
print("Roblox is cool: " .. tostring(isRobloxCool)) --> Roblox is cool: true
```


tostring

The object to be converted into a string.


Returns the provided value converted to a string, or nil if impossible.


Returns the type of its only argument, coded as a string. The possible
results of this function are "nil" (a string, not the value nil),
"number", "string", "boolean", "table", "vector", "function", "thread",
and "userdata".


type

Returns the basic type of the provided object.


Returns the elements from the given table. By default, `i` is 1 and `j` is
the length of `list`, as defined by the length operator.


unpack

list

The index of the first element to unpack.


The index of the last element to unpack.


Returns all elements from the given list as a tuple.


This function is similar to pcall, except that you can set a new error
handler.

`xpcall()` calls function `f` in protected mode, using `err` as the error
handler, and passes a list of arguments. Any error inside `f` is not
propagated; instead, `xpcall()` catches the error, calls the `err`
function with the original error object, and returns a status code. Its
first result is the status code (a boolean), which is true if the call
succeeds without errors. In this case, `xpcall()` also returns all results
from the call, after this first result. In case of any error, `xpcall()`
returns false plus the result from `err`.


xpcall

The function to be used as an error handle if xpcall catches an error.


Similar to `pcall()` except it uses a custom error handler.


Lua Globals

_VERSION

/reference/engine/globals/LuaGlobals.yaml

A list of functions and variables that are native to Lua.


Luau

Array

An object that runs connected functions upon a specific occurrence.

Data Type

RBXScriptSignal

Tuple

Variant

Data type having a value of either true or false.

bool

Functions are blocks of code that can execute multiple times on command.

function

A double-precision floating-point number.

number

A sequence of characters, such as letters, numbers, and symbols.

string

Data type which can store multiple values of any non-nil type, including booleans, numbers, strings, functions, and other tables.

table

Arbitrary C/C++ data that exists in Luau.

userdata

void

Vista general

Guías

Tutoriales

Referencia

Recursos

Arte

Diseño

Motor

Avatar

Nube

Este campo se puede establecer al crear un recurso, pero no se puede modificar por solicitudes posteriores.

Este campo se puede proporcionar en las solicitudes, pero nunca se incluirá en las respuestas.

Por clave API: {maxInPeriod} solicitudes cada {periodInSeconds} segundos por dirección IP

Este campo se puede configurar como respuestas, pero se ignorará en las solicitudes.

Se requieren los siguientes permisos de clave API para llamar a este extremo. Para obtener más información sobre cómo generar claves adecuadas, consulta [Gestionar claves API]({apiKeyReferenceDocLink}).

Los siguientes extremos están disponibles en rutas relativas a la URL base.

Esta cadena está formateada como [Timestamp](/cloud/reference/types#timestamp).

Un valor JSON puede ser `null`, `boolean`, `string`, `number`, `array`, u `object`.

Los siguientes ámbitos son necesarios para que tu aplicación OAuth 2.0 use este extremo. Para obtener más información sobre cómo registrar una aplicación de OAuth 2.0, consulta [Registro y revisión de aplicaciones]({oauth2ReferenceDocLink}).

Los siguientes objetos describen cargas que son aceptadas o devueltas. Ve cada extremo para más información sobre cuándo se utilizan estos objetos.

Esto permite ver información sobre tus recursos.

Esto permite cargar y actualizar recursos a Roblox.

Esto te permite ver información sobre tus productos de la Tienda de creadores.

Esto te permite modificar la información sobre tus productos de la Tienda de creadores.

Esto permite ver información sobre tus grupos.

Esto te permite gestionar las solicitudes de unión a grupo para tu cuenta.

Esto permite ver información sobre tu inventario.

Esta acción permite publicar mensajes en nombre de los usuarios.

Esto permite enviar notificaciones de tu experiencia a los usuarios

Esto permite enumerar los secretos asociados a tu experiencia.

Esto permite crear y actualizar secretos asociados a tu experiencia.

Permite leer información sobre el lugar.

Permite editar información sobre el lugar.

Esta operación permite el acceso a la publicación de nuevas versiones de experiencias en Roblox.

Permite leer información sobre la experiencia.

Permite editar información sobre la experiencia.

Te permite ver las restricciones de usuario en la experiencia.

Te permite editar las restricciones de usuario en la experiencia.

Permite leer el estado Premium y verificado del usuario.

Esto te permite ver las cuentas sociales de un usuario.

Activa la funcionalidad de inicio de sesión único

Da acceso a leer la información de tu perfil

Valor predeterminado: {defaultValueStart}{defaultValueEnd}

Una matriz es una lista ordenada de valores. Las matrices son útiles para almacenar colecciones de datos.

Un conjunto de pares clave-valor, donde las claves pueden ser cualquier número, cadena u objeto.

Esta función devuelve inmediatamente si es posible, pero puede producir el hilo que la llamó hasta que devuelva un valor.

Roblox ya no soporta o mantiene {nameStart}nombre{nameEnd}

Esta operación matemática ya no es soportada o mantenida por Roblox.

Este miembro no aparece en el navegador de objetos y no está destinado a un uso generalizado.

Solo se puede acceder a este miembro a través de la barra de comandos y de los plugins. Se producirá un error si se intenta acceder a través de los scripts.

Esta función no puede pausar el hilo de Lua que la llamó.

Se producirá un error al intentar acceder a este miembro a través de los scripts. Es posible acceder a él desde la ventana de propiedades de Roblox Studio.

Este miembro no aparece en el navegador de objetos de Roblox Studio.

No se puede crear una instancia de esta clase con el constructor Instance.new.

Roblox no replica este miembro a través de su límite entre servidor y cliente.

El código Lua no puede acceder a este miembro. Puedes cambiar su valor desde la ventana de propiedades en Roblox Studio.

El comportamiento de replicación de este objeto depende del jugador que lo posee.

Esta propiedad es de solo lectura y es segura para leer en hilos no sincronizados. Escribir en ella producirá un error.

Esta propiedad es de solo lectura y es seguro leerla en hilos no sincronizados. Se producirá un error al intentar escribir en ella.

Este miembro es de solo lectura. Se producirá un error al intentar escribir a este miembro.

Se puede acceder a este miembro solo en CoreScripts.

Solo Roblox CoreScripts puede acceder a este miembro y no se puede utilizar por los Jugadores.

Puedes leer y escribir en esta propiedad de forma segura desde múltiples hilos.

Esta clase es un singleton de nivel superior. Recupera una instancia de esta clase con la función GetService.

Múltiples hilos pueden escribir en esta propiedad, por lo que no es seguro leerla desde hilos no sincronizados.

Esta función pausa el hilo Lua que la llamó hasta que devuelva un resultado. Esta acción no interrumpe otros scripts.

Lua Globals

Resumen

Funciones

Propiedades

Funciones

assert

Parámetros

Devuelve

collectgarbage

Parámetros

Devuelve

error

Parámetros

Devuelve

getmetatable

Parámetros

Devuelve

ipairs

Parámetros

Devuelve

loadstring

Parámetros

Devuelve

newproxy

Parámetros

Devuelve

next

Parámetros

Devuelve

pairs

Parámetros

Devuelve

pcall

Parámetros

Devuelve

print

Parámetros

Devuelve

rawequal

Parámetros

Devuelve

rawget

Parámetros

Devuelve

rawlen

Parámetros

Devuelve

rawset

Parámetros

Devuelve

select

Parámetros

Devuelve

setmetatable

Parámetros

Devuelve

tonumber

Parámetros

Devuelve

tostring

Parámetros

Devuelve

type

Parámetros

Devuelve

unpack

Parámetros

Devuelve

xpcall

Parámetros

Devuelve

Propiedades

_G

_VERSION