Go语言中如何忽略嵌套切片元素顺序语义比较结构体

结构体定义 #

type A struct {
    Id  int
    Bs  []B
    Sub C
}

type B struct {
    Id  int
    Str string
}

type C struct {
    Id int
    Ds []D
}

type D struct {
    Id  int
    Num int
}

测试需求 #

需要判断以下两个A类型实例是否语义相等，要求忽略所有层级中切片元素的顺序，最终断言结果应返回true。

var want = &A{
    Id: 1,
    Bs: []B{{Id: 10, Str: "b10"}, {Id: 20, Str: "b20"}},
    Sub: C{
        Id: 100,
        Ds: []D{{Id: 101, Num: 1001}, {Id: 102, Num: 1002}},
    },
}

var got = &A{
    Id: 1,
    Bs: []B{{Id: 20, Str: "b20"}, {Id: 10, Str: "b10"}},
    Sub: C{
        Id: 100,
        Ds: []D{{Id: 102, Num: 1002}, {Id: 101, Num: 1001}},
    },
}

内容的提问来源于stack exchange，提问作者Alcastic