---
name: "Builtins.size"
section: "3kaya"
platform: "linux"
package: "kaya"
version: "0.4.4-6.2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/Builtins.size"
---

# Builtins.size(3kaya)

Length of an array

## NAME

Builtins::size - Length of an array

## SYNOPSIS

**Int size(** *var \[a\] xs* **)**

## ARGUMENTS

**xs** An array

## DESCRIPTION

Return the length of an array. \
      The empty array has length 0, and uninitialised elements are considered\
      to exist for the purposes of determining length.

-

   arr = \[\];\
    arr\[5\] = 26;\
    l = length(arr); // 6

## AUTHORS

Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

## LICENSE

The Kaya standard library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (version 2.1 or any later version) as published by the Free Software Foundation.