 

            
        </li>
    
        <li class="chapter " data-level="4.4" data-path="utility-types.html">
            
                <a href="utility-types.html">
            
                    
                    유틸리티 타입
            
                </a>
            

            
        </li>
    
        <li class="chapter " data-level="4.5" data-path="iterators-and-generators.html">
            
                <a href="iterators-and-generators.html">
            
              