UniqueHashFunction Concept Reference

Definition

UniqueHashFunction is a concept for a hash function with unique hash values. An instance hash for a model of the UniqueHashFunction concept is a function object. It maps objects of its domain type Key to the integral image type std::size_t. The image values have to be unique for all keys in the domain type Key.

Has models

CGAL::Handle_hash_function

See also

CGAL::Unique_hash_map<Key,Data,UniqueHashFunction>

Types
typedef std::size_t	result_type
	type of the hash value.

Creation
	UniqueHashFunction (const UniqueHashFunction &hash2)
	copy constructor.
UniqueHashFunction &	operator= (const UniqueHashFunction &hash2)
	assignment.

Operations
std::size_t	operator() (const Key &key)
	returns a unique hash value for the key value.