lass="ci">error</span><span class="cp">)</span>                                            <span class="clc"><span class="cld">//</span> 8</span>
</pre>
    </div>
    <div class="para _4">
     <p>
      Let’s start with the general structure of this implementation: We define a function <code class="fsharp"><span
      class="ci">stringReturn</span></code> with two parameters that returns a function closure. The type annotation <code class="fsharp"><span
      class="cp">:</span> <a href="../reference/pr