Unnecessary safeMath functions call
The safeMath↗ library starting from the 0.8.0 version of solidity does not implement additional checks for mathematical operations.
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}You can avoid importing unnecessary library code as well as unnecessary calls to these functions to optimize the amount of gas used.