Iterable Eternal Storage Getter

iterable_eternal_storage_getter.sol

address[] memory addressKeys = getAddressKeys("balanceKeys");

function getAddressKeys(bytes32 _listId) external view returns (address[] memory) {
  // get the number of keys with _listId "balanceKeys"
  uint256 size = getUInt256(keccak256(abi.encodePacked(_listId, "KEY_SIZE")));
  
  // create an address array with the size of the list
  address[] memory keys = new address[](size);
  
  // iterate over the list
  for (uint256 index = 0; index < size; index++) {
    // get the value at the current index
    keys[index] = getAddress(keccak256(abi.encodePacked(_listId, "KEY_VALUES", index)));
  }
  
  // return dynamic list of keys
  return keys;
}