> For the complete documentation index, see [llms.txt](https://docs.blup.in/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.blup.in/~/changes/bxpytJQPpsJWb4ZdG6qm/wiki/logics/helper-nodes/boolean-nodes.md).

# Boolean Nodes

Implement boolean logic nodes in Blup for effective conditional operations within your application.

![](https://4209426742-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Me1x4TD1HxodVbK1aDe%2Fuploads%2Fgit-blob-4dc81ad1627482eda9be72afd1526674bc11ee9b%2Fhelper-boolean.gif?alt=media)

This sub-section provides helper functions related to boolean values.

### Boolean | Is Null

![](https://4209426742-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F-Me1x4TD1HxodVbK1aDe%2Fuploads%2Fgit-blob-9cb01a4a99108e5305ade58bda7d67b28bf6367e%2Fboolean-isnull.png?alt=media)

This node checks whether the provided boolean value is null or not. A variable is considered null if there is no value present in it.

If you have any ideas to make Blup better you can share them through our [Discord community channel](https://discord.com/channels/940632966093234176/965313562425823303)

## Music to go with.

{% embed url="<https://open.spotify.com/playlist/0vvXsWCC9xrXsKd4FyS8kM?si=2c7f55bd3f944878>" %}
Lofi music
{% endembed %}