//Write your own contracts here. Currently compiles using solc v0.4.15+commit.bbb8e64f. pragma solidity ^0.4.18; contract SimpleContract { //소유자를 키로 잔액을 mapping (ERC-20) mapping (address => uint256) ERC20; // token ID로 소유자를 mapping (ERC-721) mapping (uint256 => address) ERC721; }
0.4.18