What are performance hash functions in C++11?

What are performance hash functions in C++11?

Performance hash functions in C++11 are algorithms designed to efficiently map data to fixed-size values, optimizing speed and reducing collisions.

Can you give me an example of a hash function in C++11?

Sure! A common example is std::hash, which can be used to hash various data types like integers and strings.

How do I implement a custom hash function?

You can implement a custom hash function by defining a struct with an operator() that takes your data type and returns a size_t hash value.

What are the performance considerations when using hash functions?

Key considerations include collision rates, distribution of hash values, and the complexity of the hash function itself.