UniqueHashFunction

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.

Refines

STL concept HashFunction.

Types

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

Creation

UniqueHashFunction hash ( hash2);
	copy constructor.

UniqueHashFunction&
	hash = hash2	assignment.

Operations

std::size_t

hash ( Key key)

returns unique hash value for the key value.

Has Models

CGAL::Handle_hash_function

See Also

CGAL::Unique_hash_map<Key,Data,UniqueHashFunction>