---
title: "is string · RUAL Documentation"
description: "RUAL condition block."
canonical: https://docs.rual.nl/block-types/condition/condition_is_string
language: en
---

# is string

This block is part of the [`condition`](https://docs.rual.nl/block-types/condition) group and was last modified in core [`v10.4.28`](https://docs.rual.nl/core-versions/100428).

- Value required `value`

- condition `condition`

True when the value pin holds a string, including the empty string; false for nil, missing, and every non-string type. Content is irrelevant: "123" is a string (true), the number 123 is not; no coercion either way.

A typical wiring for [is string](https://docs.rual.nl/block-types/condition/condition_is_string): the `condition` out pin feeds [branch](https://docs.rual.nl/block-types/flow/branch).

![Studio canvas example for the is string block: typical wiring for is string.](https://docs.rual.nl/canvas-examples/condition_is_string.png)

### Version history

Introduced in [`v10.4.28`](https://docs.rual.nl/core-versions/100428).