Summary

Since the default value of a uint in solidity is 0 and not null, there is no need to declare i=0 when using loops.

++i costs less gas compared to i++ or* i += 1* for an unsigned integer, as pre-increment is cheaper (about 5 gas per iteration). This statement is true even with the optimiser enabled.

it’s safe to put the ++i increment under the unchecked {…} wrap without losing on security.

Vulnerability Details

Gas optimisation that could help optimize the contracts.

Impact

Cheaper for the users.

Tools Used

Main review.

Recommendations

Change the loops : "for (uint256 i = 0; i < arg1; i++)" to "for (uint256 i; i < arg1;)" and add "unchecked{++i}"