---
layout: stdlib-reference
---

# attribute [RequirePrelude]

## Description

Mark a type to require a target specific prelude.
The prelude will be included in the generated code for the specified target if the resulting code uses
the marked type.


## Signature

<pre>
[<a href="requireprelude-07.html">RequirePrelude</a>(<a href="requireprelude-07.html#decl-target" class="code_param">target</a>, <a href="requireprelude-07.html#decl-prelude" class="code_param">prelude</a> : <a href="../types/string-0/index.html" class="code_type">String</a>)]
</pre>

## Parameters

####  <a id="decl-target"></a>target
####  <a id="decl-prelude"></a>prelude  : [String](../types/string-0/index.html)