std::unordered_map vs TMap Performance?
std::unordered_map vs TMap Performance?
May 10, 2019
unrealengine.com
Gyani Kumari on Instagram: "Is unordered_map always fast? The answer is NO. 🙅‍♂️ We love Hash Maps for their average O(1) time complexity. But do you know what happens when the hash function fails to distribute keys evenly? The breakdown: Average Case: O(1) (Direct Access) ⚡ Worst Case: O(n) (Linear Search) 🐢 This happens due to Collisions. When multiple keys fight for the same spot, the map has to chain them together, killing your performance. Save this for your next DSA revision! 💾 #cpp #st
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