---
name: "Nothing"
type: topic
source: https://community.bistudio.com/wiki/Nothing
revid: 87135
updated: 2014-12-22T17:42:31Z
---

# Nothing

An expression of type **Nothing** is no value. It cannot be assigned to a variable. It exists because each expression needs to return some value and needs to have some clearly identified type.

Its presence can be checked using [isNil](../commands/isNil.md).

<sub>Source: [BI Community Wiki — Nothing](https://community.bistudio.com/wiki/Nothing) (revision 87135).</sub>