Any


*Description:*	When used in a type annotation or signature, matches any type. In other words, a “superset” of other types.
*Annotation:*	`any`
*Literal syntax:*	N/A - Any literal value can be assigned to an `any` type
*Casts:*	N/A

Additional Language Notes

A variable defined as any takes on the type of its currently assigned value. In other words, describe will never return the any type itself. See the examples below.

any is commonly used to:

Annotate a variable that can accept any type

Example - Declare a mutable variable that can accept any type

let q = false

# Start by assigning a null (nothing type) to x
# to indicate that it hasn't been processed
mut x: any = null

if $q {
  $x = 'Yes'
} else {
  $x = 'No'
}

$x
# =>'No', which is a string

Annotate a command parameter that can accept any type

def takes-anything [v: any] -> string {
  $v | describe
}

takes-anything 42
# => int
takes-anything foo
# => string

Annotate a type signature for a command that can accept any type as input or might output any type

def passthrough [] any -> any { $in }
"Virat Kohli" | passthrough | describe
# =>string

{||} | passthrough | describe
# =>closure

Annotate a list to indicate that it can hold any type

let various = [ true false 42 'Nushell' ]
$various | describe
# =>list<any>

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