s="keyword">val</span> of_bytes : <span>bytes <span class="arrow">&#45;&gt;</span></span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-to_bytes"><a href="#val-to_bytes" class="anchor"></a><code><span><span class="keyword">val</span> to_bytes : <span>string <span class="arrow">&#45;&gt;</span></span> bytes</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-concat"><a href="#val-concat" class="anchor"></a><code><span><spa