As of 7/12/2025 is 2x MORE gas efficient!
You can define and use mappings in memory in solidity using this library. Don't trifle with writing to storage when you need a mapping, use this memory library instead.
Read/write to the memory map is cheaper in gas than the analogue in storage. In best case read/write are O(log n).
See tests for example usage.
Not audited. Use at your own risk.
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