Method insert_unique

src/entity/sparse.rs:187–194

(&mut self, key: K, value: V)

    #[inline]
    #[track_caller]
    pub fn insert_unique(&mut self, key: K, value: V) -> &mut V {
        debug_assert!(!self.contains_key(key));
        let idx = self.dense.len();
        debug_assert!(idx <= u32::MAX as usize, "SparseMap overflow");
        self.dense.push((key, value));
        self.sparse[key] = idx as u32;
        &mut self.dense.last_mut().unwrap().1
    }

    /// Remove a value from the map and return it.
    ///