Compatibility Headers

Most headers with the name < name> have an associated compatibility header < name.h>. These compatibility headers simply issue using declarations for all of the names they contain. Here is an example use:

Listing: Using Declarations for Names

#include <hash_set.h>
#include <hash_map.h>

int main()

{
   hash_set<int> a;
   hash_map<int, int> b;
}