pragma solidity ^0.6.0; import "../utils/EnumerableMap.sol"; contract EnumerableMapMock { using EnumerableMap for EnumerableMap.UintToAddressMap; event OperationResult(bool result); EnumerableMap.UintToAddressMap private _map; function contains(uint256 key) public view returns (bool) { return _map.contains(key); } function set(uint256 key, address value) public { bool result = _map.set(key, value); emit OperationResult(result); } function remove(uint256 key) public { bool result = _map.remove(key); emit OperationResult(result); } function length() public view returns (uint256) { return _map.length(); } function at(uint256 index) public view returns (uint256 key, address value) { return _map.at(index); } function get(uint256 key) public view returns (address) { return _map.get(key); } }