37 lines
793 B
Rust
37 lines
793 B
Rust
//@ check-pass
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// issue: rust-lang/rust#88421
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#![feature(adt_const_params)]
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#![feature(generic_const_exprs)]
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#![allow(incomplete_features)]
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use std::ops::Index;
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pub struct CellPossibilities;
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pub enum CellState<const SQUARE_SIZE: usize> {
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Empty(Option<CellPossibilities>),
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}
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pub struct Sudoku<const SQUARE_SIZE: usize>;
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impl<const SQUARE_SIZE: usize> Sudoku<SQUARE_SIZE>where
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[CellState<SQUARE_SIZE>; SQUARE_SIZE * SQUARE_SIZE]: Sized,
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{
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pub fn random() {
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let CellState::Empty(_) = Self[()];
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}
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}
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impl<const SQUARE_SIZE: usize> Index<()> for Sudoku<SQUARE_SIZE>
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where
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[CellState<SQUARE_SIZE>; SQUARE_SIZE * SQUARE_SIZE]: Sized,
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{
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type Output = CellState<SQUARE_SIZE>;
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fn index(&self, _: ()) -> &Self::Output {
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todo!()
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}
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}
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pub fn main() {}
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