 <a href="/introduction/struct/">结构体</a></li>
<li>
  <a href="/introduction/struct_embedding/">嵌套结构体</a></li>
<li>
  <a href="/introduction/methods/">方法</a></li>
<li>
  <a href="/introduction/interface/">接口</a></li>
<li>
  <a href="/introduction/implement_error/">实现系统错误接口</a></li>
<li>
  <a href="/introduction/implement/">判断是否实现接口</a></li>
<li>
  <a href="/introduction/error/">错误</a></li>
<li>
  <a href="/introduction/zero_value/">零值</a></li>
<