b7d60f2f9a
* Bump required compiler version to 0.5.2. * Fix shadowed variable warning in ERC20Migrator. * Rename Counter to Counters. * Add dummy state variable to SafeERC20Helper. * Update changelog entry. * Fix CountersImpl name. * Improve changelog entry.
18 lines
404 B
Solidity
18 lines
404 B
Solidity
pragma solidity ^0.5.2;
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import "../drafts/Counters.sol";
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contract CountersImpl {
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using Counters for Counters.Counter;
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uint256 public theId;
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// use whatever key you want to track your counters
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mapping(string => Counters.Counter) private _counters;
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function doThing(string memory key) public returns (uint256) {
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theId = _counters[key].next();
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return theId;
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}
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}
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