tifier">string_type</span> <span class="special">&gt;</span> <a class="link" href="basic_environment/entry_type.html#idp51463568-bb"><span class="identifier">to_vector</span></a><span class="special">(</span><span class="special">)</span> <span class="keyword">const</span><span class="special">;</span>
     <a class="link" href="basic_environment/entry_type.html#idp51465280-bb"><span class="identifier">entry</span></a><span class="special">(</span><span class="keyword">const</span> <span class="identifier">