16 lines
252 B
Solidity
16 lines
252 B
Solidity
// SPDX-License-Identifier: MIT
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pragma solidity ^0.8.28;
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contract Counter {
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uint256 public x;
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function inc() public {
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x++;
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}
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function incBy(uint by) public {
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require(by > 0, "incBy: increment should be positive");
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x += by;
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}
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}
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