What are the best practices for using hash functions in C++11?

What are the best practices for using hash functions in C++11?

In C++11, it's important to choose a good hash function that minimizes collisions. Use std::hash for built-in types.

Can you explain how to implement a custom hash function?

Sure! To implement a custom hash function, you can define a struct with a call operator that takes your type and returns a size_t value.

What are some common pitfalls to avoid when using hash functions?

Common pitfalls include using weak hash functions, not handling collisions properly, and failing to consider the distribution of input data.

How can I test the performance of my hash function?

You can test performance by measuring the time taken to insert and retrieve elements in a hash table, and analyzing collision rates.