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First Flight #24
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Submission Details
Severity: low
Invalid

Potential Redundancy in `_isInArray` Function

Description: The _isInArray function is used to check if an address exists within an array. This function performs a linear search, which can be inefficient, especially if the array is large. Additionally, if the array is frequently accessed or modified, this approach can lead to redundant operations and increased gas costs.

Impact:

  • Inefficiency: The linear search approach can lead to high gas costs and slower execution times, particularly with large arrays.

  • Redundancy: Repeatedly checking for membership in an array using this method can be redundant if more efficient data structures are available.

Proof of Concept: The _isInArray function performs a linear search:

function _isInArray(address[] memory array, address someAddress) internal pure returns (bool) {
for (uint256 i = 0; i < array.length; i++) {
if (array[i] == someAddress) {
return true;
}
}
return false;
}

Recommended Mitigation:

  • Use Mappings for Membership Checks: Replace arrays with mappings where possible to allow for constant time complexity membership checks.

  • Optimize Data Structures: Consider alternative data structures that provide more efficient membership testing, especially for frequently accessed data.

  • Minimize Array Usage: Use arrays only when necessary and ensure they are kept as small as possible to reduce the impact of linear searches.

Updates

Lead Judging Commences

inallhonesty Lead Judge about 1 year ago
Submission Judgement Published
Invalidated
Reason: Non-acceptable severity

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