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length() function

content/flux/v0/stdlib/universe/length.md

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<!------------------------------------------------------------------------------ IMPORTANT: This page was generated from comments in the Flux source code. Any edits made directly to this page will be overwritten the next time the documentation is generated. To make updates to this documentation, update the function comments above the function definition in the Flux source code: https://github.com/influxdata/flux/blob/master/stdlib/universe/universe.flux#L3588-L3588 Contributing to Flux: https://github.com/influxdata/flux#contributing Fluxdoc syntax: https://github.com/influxdata/flux/blob/master/docs/fluxdoc.md ------------------------------------------------------------------------------->

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

Function type signature
js
(<-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

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

people |> length()// Returns 3