keyword">val</span> repeat : <span>string <span class="arrow">&#45;&gt;</span></span> <span>int <span class="arrow">&#45;&gt;</span></span> string</span></code></div></div><div class="odoc-spec"><div class="spec value anchored" id="val-prefix"><a href="#val-prefix" class="anchor"></a><code><span><span class="keyword">val</span> prefix : <span><span class="label">pre</span>:string <span class="arrow">&#45;&gt;</span></span> <span>string <span class="arrow">&#45;&gt;</span></span> bool</span></code></div></di