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Making IERC721Receiver an interface #2225

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May 6, 2020
Merged

Making IERC721Receiver an interface #2225

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Making IERC721Receiver an interface
julianmrodri May 6, 2020
456cc9b
Update IERC721Receiver.sol
nventuro May 6, 2020
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8 changes: 4 additions & 4 deletions contracts/token/ERC721/IERC721Receiver.sol
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Original file line number Diff line number Diff line change
@@ -1,11 +1,11 @@
pragma solidity ^0.6.0;
pragma solidity ^0.6.2;
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/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
abstract contract IERC721Receiver {
interface IERC721Receiver {
/**
* @notice Handle the receipt of an NFT
* @dev The ERC721 smart contract calls this function on the recipient
Expand All @@ -20,6 +20,6 @@ abstract contract IERC721Receiver {
* @param data Additional data with no specified format
* @return bytes4 `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
*/
function onERC721Received(address operator, address from, uint256 tokenId, bytes memory data)
public virtual returns (bytes4);
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data)
external returns (bytes4);
}