英文:
Destructuring nested structs in Rust
问题
在Rust中，可以在嵌套的情况下解构结构体吗？
struct S2 {
field1: i64,
field2: i64,
}
struct S1 {
field1: String,
field2: S2,
}
let s1 = S1 {
field1: String::from("hello"),
field2: S2 {
field1: -1,
field2: 0,
}
}
let S1 {
field1,
field2: S2 {
field1: field1_s2,
..
}
} = s1;
我会假设答案是"不可以"，但以防有类似的方法，或者我的语法可能有问题。
英文:
Is it possible to destructure structs in Rust when they are nested?
struct S2 {
field1: i64,
field2: i64,
}
struct S1 {
field1: String,
field2: S2,
}
let s1 = S1 {
field1: String::from("hello"),
field2: S2 {
field1: -1,
field2: 0,
}
}
let S1 {
field1,
S2 {
field1: field1_s2,
..
}
} = s1;
I would assume the answer is "no" - but just in case there is a way to do something similar, or perhaps my syntax is wrong.
答案1
得分: 7
这是可能的，但你需要指定字段名称：
let S1 {
field1,
field2: S2 {
field1: field1_s2, ..
},
} = s1;
英文:
Yes, this is possible, but you need to specify the field name:
let S1 {
field1,
field2: S2 {
field1: field1_s2, ..
},
} = s1;
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