the variable is not set.
    Under Windows, the value of the <code class="code"><span class="constructor">TEMP</span></code> environment variable, or "."
    if the variable is not set.
    The temporary directory can be changed with <a href="Filename.html#VALset_temp_dir_name"><code class="code"><span class="constructor">Filename</span>.set_temp_dir_name</code></a>.<br>
<b>Since</b> 4.00.0<br>
</div>

<pre><span id="VALset_temp_dir_name"><span class="keyword">val</span> set_temp_dir_name</span> : <code cla