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update erc721

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This commit is contained in:
owen05
2021-04-14 23:06:10 +08:00
parent ebdf700f4b
commit fd22aea378
3 changed files with 194 additions and 2 deletions
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4
contracts/external/ERC721/ERC721URIStorage.sol vendored
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@@ -3,12 +3,12 @@
pragma solidity 0.6.9;
import "./ERC721.sol";
import "./ERC721Enumerable.sol";
/**
* @dev ERC721 token with storage based token URI management.
*/
abstract contract ERC721URIStorage is ERC721 {
abstract contract ERC721URIStorage is ERC721Enumerable {
using Strings for uint256;
// Optional mapping for token URIs