ss="type-var">'b</span></span> <span>&#45;&gt;</span> <span>f:<span>(<span class="type-var">'b</span> <span>&#45;&gt;</span> Sqlite3.Data.t <span>&#45;&gt;</span> <span class="type-var">'b</span>)</span></span> <span>&#45;&gt;</span> <span class="type-var">'b</span></code></dt><dd><p>Like <a href="index.html#val-result_fold_rows"><code>result_fold_rows</code></a> but pass column 0 of each row in the results to <code>f</code>.</p></dd></dl><dl><dt class="spec value" id="val-result_option"><a href="#val-resul