#     
## Introduction
In Lua, there is a single value type called **`nil`**.
Lua uses this type as a non-value to represent the absence of a valid value.
The main property of `nil` is that it is different from any other type in the language.

## Usage
`nil` is assigned to every global variable we create by default. We can also set `nil` to a global variable to delete it.
> Note: `nil` is also useful if you want to delete object instances and array elements.
## Example
In this example, we use `nil` to delete a variable.

x = 1
print(x)
x = nil
print(x)
x = {
   zero = 0,
   one = 1
}
x.zero = nil
print(x.zero)

main.lua

Lua.tar.gz

What is nil in Lua?

Nil in Lua represents the absence of a valid value, is different from other types, and can delete variables.