Error code E0508
A value was moved out of a non-copy fixed-size array.
Erroneous code example:
struct NonCopy; fn main() { let array = [NonCopy; 1]; let _value = array[0]; // error: cannot move out of type `[NonCopy; 1]`, // a non-copy fixed-size array }
The first element was moved out of the array, but this is not
possible because NonCopy
does not implement the Copy
trait.
Consider borrowing the element instead of moving it:
struct NonCopy; fn main() { let array = [NonCopy; 1]; let _value = &array[0]; // Borrowing is allowed, unlike moving. }
Alternatively, if your type implements Clone
and you need to own the value,
consider borrowing and then cloning:
#[derive(Clone)] struct NonCopy; fn main() { let array = [NonCopy; 1]; // Now you can clone the array element. let _value = array[0].clone(); }
If you really want to move the value out, you can use a destructuring array pattern to move it:
struct NonCopy; fn main() { let array = [NonCopy; 1]; // Destructuring the array let [_value] = array; }