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Tigerfyj avatar Tigerfyj commented on June 25, 2024

这个有点混淆了抽象类型与具体类型。这里如果map的定义是接受A类型，那么任何匹配A类型的数据都可以使用。对这个map而言，所有传入的数据就是抽象类型A，不关心具体类型是A1或者A2。
map[string]interface{}这样的定义产生的疑惑在于interface{}是一个高度抽象的类型，谁都可以匹配它。但字面来说，map就是只接受interface{}这个类型的。

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