Yes exactly. To take the code snippet a cousin-reply mentioned one step further, swaping @a and @b:<p><pre><code>    &gt; my @a = &lt;1 2 3 4&gt;;
    [1 2 3 4]
    &gt; my @b = &lt;2 3&gt;;
    [2 3]
    &gt; say so all(@a) &lt; any(@b);
    False
    &gt; say so all(@b) &lt; any(@a);
    True</code></pre>