docs-v2/content/flux/v0/stdlib/universe/length.md

title	description	menu	weight	introduced
length() function	`length()` returns the number of elements in an array.	flux_v0_ref name parent identifier length universe universe/length	101	0.7.0

length() returns the number of elements in an array.

Function type signature

(<-arr: [A]) => int

{{% caption %}} For more information, see Function type signatures. {{% /caption %}}

Parameters

arr

Array to evaluate. Default is the piped-forward array (<-).

Examples

Return the length of an array

people = ["John", "Jane", "Abed"]

people |> length()// Returns 3