What are some advanced features of hash maps in C++?
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What are some advanced features of hash maps in C++?
In C++, hash maps, or unordered maps, offer features like custom hash functions, collision resolution, and iterators.
Can you explain how custom hash functions work?
Custom hash functions allow you to define how keys are converted into hash values, improving performance for specific data types.
What are some common collision resolution techniques?
Common techniques include chaining, where each bucket contains a list of entries, and open addressing, where you find the next available slot.
How do iterators work with hash maps?
Iterators in hash maps allow you to traverse the elements, similar to other STL containers, providing access to key-value pairs.
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