 <span class="binding-type">cfunction</span> <span class="binding-type"><a href="https://github.com/janet-lang/janet/blob/e1c4fc2/src/boot/boot.janet#L268">source</a></span> <pre class="binding-text">(string/ascii-upper str)

Returns a new string where all bytes are replaced with the uppercase version of themselves in ASCII. Does only a very simple case check, meaning no unicode support.</pre><a href="https://janetdocs.org/string/ascii-upper">Community Examples</a></div><hr><div class="binding"><span id="st