Method add

expander_compiler/src/utils/pool.rs:20–28

(&mut self, v: &V)

    }

    pub fn add(&mut self, v: &V) -> usize {
        if let Some(&idx) = self.map.get(v) {
            return idx;
        }
        let idx = self.vec.len();
        self.vec.push(v.clone());
        self.map.insert(v.clone(), idx);
        idx
    }

    pub fn get_idx(&self, val: &V) -> usize {
        *self.map.get(val).expect("Pool value does not exist")