rustAnonymous field in Rust struct
Anonymous fields in Rust structs are fields that do not have a name associated with them. They are declared using the struct
keyword followed by the type of the field. For example:
struct Point {
x: i32,
y: i32,
// Anonymous field
i32,
}
The anonymous field in the above example is of type i32
. It can be accessed using the .
operator, just like any other field in the struct. For example:
let p = Point { x: 10, y: 20, 30 };
println!("{}", p.2); // Prints 30
Code explanation
struct Point {
- This is the start of the struct declaration.x: i32,
- This is a named field of typei32
.y: i32,
- This is another named field of typei32
.i32,
- This is the anonymous field of typei32
.let p = Point { x: 10, y: 20, 30 };
- This is how an instance of the struct is created, with the anonymous field being set to30
.println!("{}", p.2);
- This is how the anonymous field is accessed, using the.
operator and the index of the field (in this case2
).
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