Feature request: quick fix to update const array size

[IFcoltransG]

If I declare a const array, I need to give it a specific size, in this case 2.

const NUMBERS: [u8; 2] = [
  10,
  20
];

When I add or remove a number from the initialiser, the compiler will complain that the listed array length is now wrong. It would be convenient to have a quick fix, which amends the explicit size to match the true number of items in the array.

Here's an example of the fix that I would like applied, changing the array type from [u8; 2] to [u8; 3].

const NUMBERS: [u8; 2] = [
  10,
  20,
  30
]; // mismatched types, expected array `[u8; 2]`, found array `[u8; 3]`

->

const NUMBERS: [u8; 3] = [
  10,
  20,
  30
];

[lnicola]

Bah. If you write [u8; _], rustc will offer a suggestion, but not if you put in the wrong value.

[lnicola]

Filed rust-lang/rust#107156.

[HKalbasi]

Closing since it is now implemented in rustc.