Function collect_stable_map_from 

pub fn collect_stable_map_from<K, V, M>(
    map: &BTreeMap<K, V, M>,
) -> HashMap<K, V>
where
    K: Storable + Clone + Eq + Ord + Hash,
    V: Storable + Clone,
    M: Memory,

Collects entries from a BTreeMap into a HashMap<K, V>.

This is a convenience wrapper over collect_stable_map that calls .iter() for you.

Type Parameters

• K: Key type (must be Storable, Clone, Ord, Eq, Hash)
• V: Value type (must be Storable and Clone)
• M: Stable memory backend

Example

let map = collect_stable_map_from(&my_stable_map);