[1、数据定义](1%E3%80%81%E6%95%B0%E6%8D%AE%E5%AE%9A%E4%B9%89.md) [2、数组和切片](2%E3%80%81%E6%95%B0%E7%BB%84%E5%92%8C%E5%88%87%E7%89%87.md) [3、Map](3%E3%80%81Map.md) [4、interface](4%E3%80%81interface.md) [5、channel](5%E3%80%81channel.md) [6、WaitGroup](6%E3%80%81WaitGroup.md)