2021-12-07 15:36:30 +08:00

14 lines
439 B
Solidity

pragma solidity ^0.5.12;
import "./IERC721Receiver.sol";
contract TestErc is IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4) {
operator;//mention parameters only to suppress warnings in truffle
from;
tokenId;
data;
return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
}
}