How to use following data structure of solidity in substrate?
struct SortitionSumTree {
uint K;
uint[] stack;
uint[] nodes;
mapping(bytes32 => uint) IDsToTreeIndexes;
mapping(uint => bytes32) nodeIndexesToIDs;
}
/* Storage */
struct SortitionSumTrees {
mapping(bytes32 => SortitionSumTree) sortitionSumTrees;
}
Should I use BTreeMap instead of mapping of solidity in the struct? https://paritytech.github.io/substrate/master/sp_std/collections/btree_map/struct.BTreeMap.html
#[derive(PartialEq, Eq, PartialOrd, Ord, Default, Clone, Encode, Decode, TypeInfo)]
#[cfg_attr(feature = "std", derive(Debug))]
pub struct SortitionSumTree {
pub k: u128,
pub stack: u128,
pub nodes: u128,
pub ids_to_tree_indexes: BTreeMap<Vec<u8>, u128>,
pub node_indexes_to_ids: BTreeMap<u128, Vec<u8>>,
}
#[pallet::storage]
#[pallet::getter(fn sortition_sum_trees)]
pub type SortitionSumTrees<T> = StorageMap<_,Blake2_128Concat, Vec<u8>, SortitionSumTree>;
Is it right way of doing it in substrate?
