What should I pass to unordered_map's bucket count argument if I just want to specify a hash function?

Question

C++11\'s unordered_map\'s default constructor looks like this:

explicit unordered_map( size_type bucket_count = /*implementation-defined*/,
             


        

Answer 1

One of the template parameters for unordered_map is the hash function. If you specify your hash function object there you can leave the constructor parameters at their default settings.