Solidity_Learn/77_GasOptimization.sol at main · SrikanthAlva/Solidity_Learn · GitHub

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// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

contract Gas_Test {
    uint[] public arrayFunds;
    uint public totalFunds;

    constructor() {
        arrayFunds = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13];
    }

    function optionA() external {
        for (uint i = 0; i < arrayFunds.length; i++) {
            totalFunds = totalFunds + arrayFunds[i];
        }
    }

    function optionB() external {
        uint _totalFunds;
        for (uint i = 0; i < arrayFunds.length; i++) {
            _totalFunds = _totalFunds + arrayFunds[i];
        }
        totalFunds = _totalFunds;
    }

    function optionC() external {
        uint _totalFunds;
        uint[] memory _arrayFunds = arrayFunds;
        for (uint i = 0; i < _arrayFunds.length; i++) {
            _totalFunds = _totalFunds + _arrayFunds[i];
        }
        totalFunds = _totalFunds;
    }

    // Optional

    // function unsafe_inc(uint x) private pure returns (uint) {
    //     unchecked { return x + 1; }
    // }

    //   function optionD() external {
    //     uint _totalFunds;
    //     uint[] memory _arrayFunds = arrayFunds;
    //     for (uint i =0; i < _arrayFunds.length; i = unsafe_inc(i)){
    //         _totalFunds = _totalFunds + _arrayFunds[i];
    //     }
    //     totalFunds = _totalFunds;
    // }
}