/em> and <em>&lt;=</em> are accepted.</li>
</ul>

<p>Expample:</p>
<pre class="highlight plaintext"><code>"tomatos": {
    "iex:2&lt;x&lt;10": "%d tomatos is between 2 and 10"
}
</code></pre>
<a href='#regex_expressions' class='anchor' aria-hidden=true><span class="header-anchor"></span></a><h3 id='regex_expressions'>Regex Expressions</h3>

<p>This is the most powerful type of expression. It takes regular expression ;)</p>

<ul>
<li><em>exp:</em> - prefix of <em>regex</em> expression</li>
<li><em>string</em