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

# Builtins.isInitialised(3kaya)

Checks if a value is initialised

## NAME

Builtins::isInitialised - Checks if a value is initialised

## SYNOPSIS

**Bool isInitialised(** *var a x* **)**

## ARGUMENTS

**x** A possibly initialised variable

## DESCRIPTION

Returns true if the value is initialised, or false if not\
      (for example, an uninitialised array element)

-

   arr = \[\];\
    arr\[2\] = 55;\
    b = isInitialised(arr); // true\
    b = isInitialised(arr\[2\]); // true\
    b = isInitialised(arr\[1\]); // false

## 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.