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<a name="User-Experience-Guidelines-1"></a>
<h2 class="chapter">28 User Experience Guidelines</h2>
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<a name="index-guidelines_002c-user-experience"></a>

<p>To borrow a slogan from
<a href="https://elm-lang.org/news/compilers-as-assistants">Elm</a>,
</p>
<blockquote>
<p><strong>Compilers should be assistants, not adversaries.</strong>  A compiler should
not just detect bugs, it should then help you understand why there is a bug.
It should not berate you in a robot voice, it should give you specific hints
that help you write better code. Ultimately, a compiler should make
programming faster and more fun!
</p></blockquote>
<div align="center">&mdash; <em>Evan Czaplicki</em>
</div>
<p>This chapter provides guidelines on how to implement diagnostics and
command-line options in ways that we hope achieve the above ideal.
</p>
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<tr><td align="left" valign="top">&bull; <a href="Guidelines-for-Diagnostics.html#Guidelines-for-Diagnostics" accesskey="1">Guidelines for Diagnostics</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">How to implement diagnostics.
</td></tr>
<tr><td align="left" valign="top">&bull; <a href="Guidelines-for-Options.html#Guidelines-for-Options" accesskey="2">Guidelines for Options</a>:</td><td>&nbsp;&nbsp;</td><td align="left" valign="top">Guidelines for command-line options.
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