28 lines
705 B
Solidity
28 lines
705 B
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.0;
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import "../utils/Checkpoints.sol";
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contract CheckpointsImpl {
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using Checkpoints for Checkpoints.History;
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Checkpoints.History private _totalCheckpoints;
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function latest() public view returns (uint256) {
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return _totalCheckpoints.latest();
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}
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function getAtBlock(uint256 blockNumber) public view returns (uint256) {
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return _totalCheckpoints.getAtBlock(blockNumber);
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}
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function push(uint256 value) public returns (uint256, uint256) {
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return _totalCheckpoints.push(value);
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}
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function length() public view returns (uint256) {
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return _totalCheckpoints._checkpoints.length;
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}
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}
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