The solving functions cannot receive a mutable reference

[NilsIrl]

#[aoc(day8, part2)]
fn part2(input: &mut Vec<(Operation, i64)>) -> i64 {

error[E0308]: mismatched types
  --> src/day8.rs:46:1
   |
46 | #[aoc(day8, part2)]
   | ^^^^^^^^^^^^^^^^^^^ types differ in mutability
   |
   = note: expected mutable reference `&mut Vec<(day8::Operation, i64)>`
                      found reference `&_`
   = note: this error originates in an attribute macro (in Nightly builds, run with -Z macro-backtrace for more info)

[dantho]

Yeah. That gets me, too. Maybe the tool considers that you may use the generated input twice, for each of Part1 and Part2.
That does happen a lot. Wouldn't want to regenerate in that case. Just guessing.

Workaround: let input = input.clone();

[NilsIrl]

Maybe the tool considers that you may use the generated input twice, for each of Part1 and Part2.

I didn't think about that. Considering this, I'm tempted to close this issue because the solution would be for cargo-aoc to clone the input before passing it on to the solver, which I don't find ideal. However, for the benchmarks, I don't think people want the cloning of their input being taken into account.