fn tree_policy<'a, PS: planner::ProblemSpace + planner::Anytime>(
    ps: &'a PS,
    state: PS::State,
    children: &mut collections::HashMap<PS::State, Vec<PS::State>>,
    n_vals: &collections::HashMap<PS::State, u64>,
    q_vals: &collections::HashMap<PS::State, f64>,
) -> PS::State {
    let mut v = state;
    while ps.succ(&v).count() != 0 {
        if !children.contains_key(&v) || ps.succ(&v).count() != (children.get(&v).unwrap()).len() {
            v = expand(ps, v, children).unwrap();
            break;
        } else {
            v = best_child(ps, v, children, n_vals, q_vals, 1.0).unwrap();
        }
    }
    v
}
/// Select of expand a state.
Select of expand a state.
Select of expand a state .
fn tree_policy<'a, PS: planner::ProblemSpace + planner::Anytime>(
    ps: &'a PS,
    state: PS::State,
    children: &mut collections::HashMap<PS::State, Vec<PS::State>>,
    n_vals: &collections::HashMap<PS::State, u64>,
    q_vals: &collections::HashMap<PS::State, f64>,
) -> PS::State {
    let mut v = state;
    while ps.succ(&v).count() != 0 {
        if !children.contains_key(&v) || ps.succ(&v).count() != (children.get(&v).unwrap()).len() {
            v = expand(ps, v, children).unwrap();
            break;
        } else {
            v = best_child(ps, v, children, n_vals, q_vals, 1.0).unwrap();
        }
    }
    v
}
fn tree_policy < ' a , PS : planner :: ProblemSpace + planner :: Anytime > ( ps : & ' a PS , state : PS :: State , children : & mut collections :: HashMap < PS :: State , Vec < PS :: State > > , n_vals : & collections :: HashMap < PS :: State , u64 > , q_vals : & collections :: HashMap < PS :: State , f64 > , ) -> PS :: State { let mut v = state ; while ps . succ ( & v ) . count ( ) != 0 { if ! children . contains_key ( & v ) || ps . succ ( & v ) . count ( ) != ( children . get ( & v ) . unwrap ( ) ) . len ( ) { v = expand ( ps , v , children ) . unwrap ( ) ; break ; } else { v = best_child ( ps , v , children , n_vals , q_vals , 1.0 ) . unwrap ( ) ; } } v }
Select of expand a state.
Select of expand a state .
ps
&'a PS
state
PS::State
children
&mut collections::HashMap<PS::State, Vec<PS::State>>
n_vals
&collections::HashMap<PS::State, u64>
q_vals
&collections::HashMap<PS::State, f64>
ps
&'a PS
state
PS::State
children
&mut collections::HashMap<PS::State, Vec<PS::State>>
n_vals
&collections::HashMap<PS::State, u64>
q_vals
&collections::HashMap<PS::State, f64>