am <code>b</code> as its argument, and it will return another stream whose value is the result of the function call. This method exists to conform to <a href="https://github.com/fantasyland/fantasy-land">Fantasy Land&#39;s Applicative specification</a>. For more information, see the <a href="#what-is-fantasy-land">What is Fantasy Land</a> section.</p>
<p><code>stream = stream()[&quot;fantasy-land/ap&quot;](apply)</code></p>
<table>
<thead>
<tr>
<th>Argument</th>
<th>Type</th>
<th>Required</th>
<th>Descripti