pub trait UsedSituations<T: Board> {
// Required methods
fn is(&self, board: &T) -> bool;
fn add(&mut self, board: &T);
fn remove(&mut self, board: &T);
}Expand description
Container for used situations and similar to them
§Examples
use podch::{Board, UsedSituations};
let mut used = podch::HashUsedSituations::new();
let mut board = podch::VecBoard::new(2, 3);
assert!(!used.is(&board)); // By default, neither situation is marked used
used.add(&board); // Mark "000\n000" as used
assert!(used.is(&board));
board.set(0, 1, podch::Stone::Light);
assert!(!used.is(&board)); // "020\n000" is not marked yet
used.add(&board);
board.set(0, 1, podch::Stone::None);
assert!(used.is(&board)); // "000\n000" is still marked
used.remove(&board);
assert!(!used.is(&board)); // no longer marked
board.set(1, 1, podch::Stone::Dark);
assert!(used.is(&board)); // "000\n010" is similar to "020\n000" that is marked
board.set(0, 1, podch::Stone::Dark);
assert!(!used.is(&board)); // "010\n010" is not similar to any used situation