r"></a><code><span class="keyword">val</span> for_all2 : <span>(<span class="type-var">'a</span> <span>&#45;&gt;</span> <span class="type-var">'b</span> <span>&#45;&gt;</span> bool)</span> <span>&#45;&gt;</span> <span><span class="type-var">'a</span> list</span> <span>&#45;&gt;</span> <span><span class="type-var">'b</span> list</span> <span>&#45;&gt;</span> bool</code></dt><dt class="spec value" id="val-exists2"><a href="#val-exists2" class="anchor"></a><code><span class="keyword">val</span> exists2 : <span