  (<span class="mdzsyn-coresym">string/join</span> @[<span class="mdzsyn-string">"a"</span> <span class="mdzsyn-string">"b"</span> <span class="mdzsyn-string">"c"</span>])) <span class="mdzsyn-comment"># -&gt; true</span></code></pre><h3 id="Upper-and-lower-case">Upper and lower case
</h3>
<p>The string library also provides facilities for converting strings to upper case
and lower case. However, only ASCII characters will be transformed.  The
functions <code class="mendoza-code">string/ascii-upper</code> a