/p>
<p>Assertions allow us to test the parsed data on whether or not it matches certain requirements. This helps in making sure, that the data we parse aligns with our specification. When an assertion is not met, corrode will throw an <code>Error</code> and halt execution.</p>
<p>Mappers provide us with a way to transform read data into something different, or mapping certain values to other ones.</p>
<p>The Header-parser will show you the basics of their usage.</p>
<h2 id="let--39-s-get-started">Let&apos;s