Submission Details
Severity:
Drawing card can be more gas-efficient
Summary
The drawCard function queries availableCards[Player].length three times.
This costs gas as it is always read from storage.
Impact
It would be better to abstract this query to a variable so the length value is read from storage once but used throughtout the code
Tools Used
Manual review
Recommendations
+ uint256[] storage cards = availableCards[player];
+ uint256 length = cards.length;
require(
- availableCards[player].length > 0
+ length > 0,
Rewards breakdown
nSLOC
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100 EXP
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