RWTValHashMap< K, T, H, EQ, A > Class Template Reference

Maintains a collection of keys, each with an associated item stored according to a hash object. More...

#include <rw/tvhdict.h>

Public Types
typedef container_type::allocator_type	allocator_type
typedef container_type::const_iterator	const_iterator
typedef container_type::const_pointer	const_pointer
typedef container_type::const_reference	const_reference
typedef rw_hashmap< K, T, H, EQ, A >	container_type
typedef container_type::difference_type	difference_type
typedef container_type::hasher	hasher
typedef container_type::iterator	iterator
typedef container_type::key_equal_type	key_equal
typedef container_type::key_type	key_type
typedef container_type::mapped_type	mapped_type
typedef container_type::pointer	pointer
typedef container_type::reference	reference
typedef container_type::size_type	size_type
typedef container_type::value_type	value_type

Public Member Functions
	RWTValHashMap ()
	RWTValHashMap (const rw_hashmap< K, T, H, EQ, A > &m)
	RWTValHashMap (const RWTValHashMap< K, T, H, EQ, A > &rws)
	RWTValHashMap (RWTValHashMap< K, T, H, EQ, A > &&rws)
	RWTValHashMap (container_type &&rws)
template<typename InputIterator >
	RWTValHashMap (InputIterator first, InputIterator last, size_type sz=64, const H &h=H(), const EQ &eq=EQ())
	RWTValHashMap (const hasher &h, size_type sz=64)
void	apply (void(*fn)(const key_type &, const mapped_type &, void *), void *d) const
void	apply (void(*fn)(const key_type &, mapped_type &, void *), void *d)
iterator	begin ()
const_iterator	begin () const
size_type	capacity () const
const_iterator	cbegin () const
const_iterator	cend () const
void	clear ()
bool	contains (bool(*fn)(const_reference, void *), void *d) const
bool	contains (const key_type &key) const
iterator	end ()
const_iterator	end () const
size_type	entries () const
iterator	erase (iterator pos)
iterator	erase (iterator first, iterator last)
float	fillRatio () const
bool	find (bool(*fn)(const_reference, void *), void *d, std::pair< K, T > &r) const
bool	find (const key_type &key, key_type &r) const
bool	findKeyAndValue (const key_type &key, key_type &kr, mapped_type &tr) const
bool	findValue (const key_type &key, mapped_type &r) const
iterator	insert (iterator hint, const_reference val)
template<typename InputIterator >
void	insert (InputIterator first, InputIterator last)
bool	insert (const key_type &key, const mapped_type &a)
bool	insert (K &&key, T &&a)
template<typename P >
iterator	insert (iterator hint, P &&val)
bool	isEmpty () const
const key_type &	maxElement () const
const key_type &	minElement () const
size_type	occurrencesOf (bool(*fn)(const_reference, void *), void *d) const
size_type	occurrencesOf (const key_type &key) const
RWTValHashMap< K, T, H, EQ, A > &	operator= (const RWTValHashMap< K, T, H, EQ, A > &rhs)
RWTValHashMap< K, T, H, EQ, A > &	operator= (const rw_hashmap< K, T, H, EQ, A > &rhs)
RWTValHashMap< K, T, H, EQ, A > &	operator= (RWTValHashMap< K, T, H, EQ, A > &&rhs)
RWTValHashMap< K, T, H, EQ, A > &	operator= (container_type &&rhs)
mapped_type &	operator[] (const key_type &key)
bool	remove (bool(*fn)(const_reference, void *), void *d)
bool	remove (const key_type &key)
size_type	removeAll (bool(*fn)(const_reference, void *), void *d)
size_type	removeAll (const key_type &key)
void	resize (size_type sz)
container_type &	std ()
const container_type &	std () const
void	swap (RWTValHashMap< K, T, H, EQ, A > &other)

Related Functions
(Note that these are not member functions.)
template<class K , class T , class H , class EQ , class A >
bool	operator!= (const RWTValHashMap< K, T, H, EQ, A > &lhs, const RWTValHashMap< K, T, H, EQ, A > &rhs)
template<class K , class T , class H , class EQ , class A >
bool	operator!= (const RWTValHashMap< K, T, H, EQ, A > &lhs, const typename RWTValHashMap< K, T, H, EQ, A >::container_type &rhs)
template<class K , class T , class H , class EQ , class A >
bool	operator!= (const typename RWTValHashMap< K, T, H, EQ, A >::container_type &lhs, const RWTValHashMap< K, T, H, EQ, A > &rhs)
template<class K , class T , class H , class EQ , class A >
RWvostream &	operator<< (RWvostream &strm, const RWTValHashMap< K, T, H, EQ, A > &coll)
template<class K , class T , class H , class EQ , class A >
RWFile &	operator<< (RWFile &strm, const RWTValHashMap< K, T, H, EQ, A > &coll)
template<class K , class T , class H , class EQ , class A >
bool	operator== (const RWTValHashMap< K, T, H, EQ, A > &lhs, const RWTValHashMap< K, T, H, EQ, A > &rhs)
template<class K , class T , class H , class EQ , class A >
bool	operator== (const RWTValHashMap< K, T, H, EQ, A > &lhs, const typename RWTValHashMap< K, T, H, EQ, A >::container_type &rhs)
template<class K , class T , class H , class EQ , class A >
bool	operator== (const typename RWTValHashMap< K, T, H, EQ, A >::container_type &lhs, const RWTValHashMap< K, T, H, EQ, A > &rhs)
template<class K , class T , class H , class EQ , class A >
RWvistream &	operator>> (RWvistream &strm, RWTValHashMap< K, T, H, EQ, A > &coll)
template<class K , class T , class H , class EQ , class A >
RWFile &	operator>> (RWFile &strm, RWTValHashMap< K, T, H, EQ, A > &coll)
template<class K , class T , class H , class EQ , class A >
RWvistream &	operator>> (RWvistream &strm, RWTValHashMap< K, T, H, EQ, A > *&p)
template<class K , class T , class H , class EQ , class A >
RWFile &	operator>> (RWFile &strm, RWTValHashMap< K, T, H, EQ, A > *&p)

Detailed Description

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>
class RWTValHashMap< K, T, H, EQ, A >

This class maintains a collection of keys, each with an associated item of type T. These pairs are stored according to a hash object of type H. Class A is an allocator of objects of class T. For more information about using custom allocators, please see the Essential Tools Module User's Guide.

H must provide a const function that takes a single argument convertible to type K and returns a value of type size_t.

Note

Any two keys that are equivalent must hash to the same value.

Key equality is determined by an equality function of type EQ, which takes two arguments convertible to type K and returns a value of type bool.

Note

Any two keys that are equivalent are disallowed for this container.

RWTValHashMap will not accept a key that is equivalent to any key already in the collection. (RWTValHashMultiMap may contain multiple keys that are equivalent to each other.) Equality is based on an equality object and not on the equality operator. If your type has an equality operator, then you may want to use the templatized std::equal_to function object provided by the C++ Standard Library; otherwise, you must define your own equality object.

The value type must have operator== defined. This requirement is imposed by the C++ Standard Library.

Synopsis

#include <rw/tvhdict.h>
RWTValHashMap<K,T,H,EQ,A> m;

See also

Class RWTValHashMultiMap offers the same interface to a collection that accepts multiple keys that compare equal to each other.

Class rw_hashmap<K,T,H,EQ,A> is the C++ Standard Library collection that serves as the underlying implementation for this class.

Persistence

Isomorphic

Example

#include <iostream>
#include <functional>

#include <rw/tvhdict.h>
#include <rw/cstring.h>
#include <rw/tools/datetime.h>

struct simple_hash
{
     unsigned long
     operator()(const RWCString& ref) const {
        size_t n = ref.length ();
        return (unsigned long)(n ? n * size_t (ref [0]) : 0);
     }
};

typedef RWTValHashMap<RWCString, RWDateTime, simple_hash,
                     std::equal_to<RWCString> > RW;

int main()
{
    RW birthdays;

    birthdays.insertKeyAndValue(
      "John",
      RWDateTime("April 12, 1975", RWDateTime::setDate)
    );
    birthdays.insertKeyAndValue("Ivan", RWDateTime("Nov 2, 1980", RWDateTime::setDate));

    // Alternative syntax:
    birthdays["Susan"] = RWDateTime("June 30, 1955", RWDateTime::setDate);
    birthdays["Gene"] = RWDateTime("Jan 5, 1981", RWDateTime::setDate);

    // Print a birthday:
    std::cout << birthdays["John"].asString('x') << std::endl;
    return 0;
}

Program Output:

04/12/75

Member Typedef Documentation

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::allocator_type RWTValHashMap< K, T, H, EQ, A >::allocator_type

A type representing the allocator type for the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::const_iterator RWTValHashMap< K, T, H, EQ, A >::const_iterator

A type that provides a const forward iterator over the elements in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::const_pointer RWTValHashMap< K, T, H, EQ, A >::const_pointer

A type that provides a const pointer to an element in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::const_reference RWTValHashMap< K, T, H, EQ, A >::const_reference

A type that provides a const reference to an element in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef rw_hashmap<K, T, H, EQ, A> RWTValHashMap< K, T, H, EQ, A >::container_type

A type representing the underlying implementation container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::difference_type RWTValHashMap< K, T, H, EQ, A >::difference_type

A signed integral type used to indicate the distance between two valid iterators on the same container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::hasher RWTValHashMap< K, T, H, EQ, A >::hasher

A type representing the hash function.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::iterator RWTValHashMap< K, T, H, EQ, A >::iterator

A type that provides a forward iterator over the elements in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::key_equal_type RWTValHashMap< K, T, H, EQ, A >::key_equal

A type representing the equality function.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::key_type RWTValHashMap< K, T, H, EQ, A >::key_type

A type representing the key of the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::mapped_type RWTValHashMap< K, T, H, EQ, A >::mapped_type

A type representing the mapped value of the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::pointer RWTValHashMap< K, T, H, EQ, A >::pointer

A type that provides a pointer to an element in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::reference RWTValHashMap< K, T, H, EQ, A >::reference

A type that provides a reference to an element in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::size_type RWTValHashMap< K, T, H, EQ, A >::size_type

An unsigned integral type used for counting the number of elements in the container.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

typedef container_type::value_type RWTValHashMap< K, T, H, EQ, A >::value_type

A type representing the container's data type.

Constructor & Destructor Documentation

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( )

inline

Constructs an empty map.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( const rw_hashmap< K, T, H, EQ, A > &  m )

inline

Constructs a map by copying all elements of m.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( const RWTValHashMap< K, T, H, EQ, A > &  rws )

inline

Copy constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( RWTValHashMap< K, T, H, EQ, A > &&  rws )

inline

Move constructor. The constructed hash map takes ownership of the data owned by rws.

Condition:

This method is available only on platforms with rvalue reference support.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( container_type &&  rws )

inline

Move constructor. The constructed hash map takes ownership of the data owned by rws.

Condition:

This method is available only on platforms with rvalue reference support.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

template<typename InputIterator >

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( InputIterator  first, InputIterator  last, size_type  sz = 64, const H &  h = H(), const EQ &  eq = EQ()  )

inline

Constructs a map by copying elements from the range [first, last). The underlying representation has sz buckets, uses h for its hashing function, and uses eq to determine equality between elements.

InputIterator is an input iterator type that points to elements that are convertible to value_type objects.

Note

If the value specified for sz is zero, the default bucket count is used.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap< K, T, H, EQ, A >::RWTValHashMap ( const hasher &  h, size_type  sz = 64  )

inline

Creates an empty hashed map which uses the hash object h and has an initial capacity of sz.

Member Function Documentation

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

void RWTValHashMap< K, T, H, EQ, A >::apply	(	void(*)(const key_type &, const mapped_type &, void *)	fn,
		void *	d
	)		const

Invokes the function pointer fn on each association in the collection. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

void RWTValHashMap< K, T, H, EQ, A >::apply	(	void(*)(const key_type &, mapped_type &, void *)	fn,
		void *	d
	)

Invokes the function pointer fn on each association in the collection. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

iterator RWTValHashMap< K, T, H, EQ, A >::begin ( )

inline

Returns an iterator referring to the first element in the container.

If the container is empty, returns end().

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const_iterator RWTValHashMap< K, T, H, EQ, A >::begin ( ) const

inline

Returns an iterator referring to the first element in the container.

If the container is empty, returns end().

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::capacity ( ) const

inline

Returns the number of buckets (slots) available in the underlying hash representation. See resize().

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const_iterator RWTValHashMap< K, T, H, EQ, A >::cbegin ( ) const

inline

Returns an iterator referring to the first element in the container.

If the container is empty, returns end().

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const_iterator RWTValHashMap< K, T, H, EQ, A >::cend ( ) const

inline

Returns an iterator referring to the element after the last element in the container.

Dereferencing the iterator returned by this function results in undefined behavior.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

void RWTValHashMap< K, T, H, EQ, A >::clear ( void  )

inline

Clears the collection by removing all items from self. Each key and its associated item will have its destructor called.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::contains ( bool(*)(const_reference, void *)  fn, void *  d  ) const

inline

Returns true if there exists an association a in self such that the expression ((*fn)(a,d)) is true, otherwise returns false. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::contains ( const key_type &  key ) const

inline

Returns true if there exists a key j in self that compares equal to key, otherwise returns false.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

iterator RWTValHashMap< K, T, H, EQ, A >::end ( )

inline

Returns an iterator referring to the element after the last element in the container.

Dereferencing the iterator returned by this function results in undefined behavior.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const_iterator RWTValHashMap< K, T, H, EQ, A >::end ( ) const

inline

Returns an iterator referring to the element after the last element in the container.

Dereferencing the iterator returned by this function results in undefined behavior.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::entries ( void  ) const

inline

Returns the number of associations in self.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

iterator RWTValHashMap< K, T, H, EQ, A >::erase ( iterator  pos )

inline

Removes the item pointed to by pos from the collection. Returns an iterator that points to the next item in the collection, or end() if the last item in the collection was removed.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

iterator RWTValHashMap< K, T, H, EQ, A >::erase ( iterator  first, iterator  last  )

inline

Removes the items in the range [first, last) from the collection. Returns an iterator that points to the next item in the collection, or end() if the last item in the collection was removed.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

float RWTValHashMap< K, T, H, EQ, A >::fillRatio ( ) const

inline

Returns the ratio entries() / capacity().

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::find ( bool(*)(const_reference, void *)  fn, void *  d, std::pair< K, T > &  r  ) const

inline

If there exists an association a in self such that the expression ((*fn)(a,d)) is true, assigns a to r and returns true. Otherwise, returns false and leaves the value of r unchanged. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::find ( const key_type &  key, key_type &  r  ) const

inline

If there exists a key j in self that compares equal to key, assigns j to r and returns true. Otherwise, returns false and leaves the value of r unchanged.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::findKeyAndValue ( const key_type &  key, key_type &  kr, mapped_type &  tr  ) const

inline

If there exists a key j in self that compares equal to key, assigns j to kr, assigns the item associated with j to tr, and returns true. Otherwise, returns false and leaves the values of kr and tr unchanged.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::findValue ( const key_type &  key, mapped_type &  r  ) const

inline

If there exists a key j in self that compares equal to key, assigns the item associated with j to r and returns true. Otherwise, returns false and leaves the value of r unchanged.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

iterator RWTValHashMap< K, T, H, EQ, A >::insert ( iterator  hint, const_reference  val  )

inline

Attempts to insert val into self. If an existing item with an equivalent key is already in the collection, val is not inserted, and an iterator to the existing item is returned. Otherwise inserts val and returns an iterator to the new item.

The hint parameter indicates where in the collection the new value should be inserted. This value is only a hint, and will be ignored if the value should be inserted at a different location according to the container's hash object.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

template<typename InputIterator >

void RWTValHashMap< K, T, H, EQ, A >::insert ( InputIterator  first, InputIterator  last  )

inline

Inserts the elements in the range [first, last) into self. If the element is already present in the collection, it will be ignored.

InputIterator is an input iterator type that points to elements that are convertible to value_type objects.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::insert ( const key_type &  key, const mapped_type &  a  )

inline

Adds key with associated item a to the collection. Returns true if the insertion is successful, otherwise returns false. Insertion will fail if the collection already holds an association with the equivalent key.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::insert ( K &&  key, T &&  a  )

inline

Adds key with associated item a to the collection. Returns true if the insertion is successful, otherwise returns false. Insertion will fail if the collection already holds an association with the equivalent key.

Condition:

This method is available only on platforms with rvalue reference support.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

template<typename P >

iterator RWTValHashMap< K, T, H, EQ, A >::insert ( iterator  hint, P &&  val  )

inline

Attempts to insert val into self. If an existing item with an equivalent key is already in the collection, val is not inserted, and an iterator to the existing item is returned. Otherwise inserts val and returns an iterator to the new item.

The hint parameter indicates where in the collection the new value should be inserted. This value is only a hint, and will be ignored if the value should be inserted at a different location according to the container's hash object.

Condition:

This method is available only on platforms with rvalue reference support.

P is a type that is convertible to value_type.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::isEmpty ( ) const

inline

Returns true if there are no items in the collection, otherwise false.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const key_type& RWTValHashMap< K, T, H, EQ, A >::maxElement ( ) const

inline

Returns a reference to the maximum key in the collection. Type key_type must have well-defined less-than semantics (K::operator<(const K&) or equivalent).

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const key_type& RWTValHashMap< K, T, H, EQ, A >::minElement ( ) const

inline

Returns a reference to the minimum key in the collection. Type key_type must have well-defined less-than semantics (K::operator<(const K&) or equivalent).

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::occurrencesOf ( bool(*)(const_reference, void *)  fn, void *  d  ) const

inline

Returns the number of associations a in self such that the expression ((*fn)(a,d)) is true. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::occurrencesOf ( const key_type &  key ) const

inline

Returns the number of keys j in self that compare equal to key.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap<K, T, H, EQ, A>& RWTValHashMap< K, T, H, EQ, A >::operator= ( const RWTValHashMap< K, T, H, EQ, A > &  rhs )

inline

Destroys all elements of self and replaces them by copying all associations from rhs.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap<K, T, H, EQ, A>& RWTValHashMap< K, T, H, EQ, A >::operator= ( const rw_hashmap< K, T, H, EQ, A > &  rhs )

inline

Destroys all elements of self and replaces them by copying all associations from rhs.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap<K, T, H, EQ, A>& RWTValHashMap< K, T, H, EQ, A >::operator= ( RWTValHashMap< K, T, H, EQ, A > &&  rhs )

inline

Move assignment. Self takes ownership of the data owned by rhs.

Condition:

This method is available only on platforms with rvalue reference support.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

RWTValHashMap<K, T, H, EQ, A>& RWTValHashMap< K, T, H, EQ, A >::operator= ( container_type &&  rhs )

inline

Move assignment. Self takes ownership of the data owned by rhs.

Condition:

This method is available only on platforms with rvalue reference support.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

mapped_type& RWTValHashMap< K, T, H, EQ, A >::operator[] ( const key_type &  key )

inline

Looks up key and returns a reference to its associated item. If the key is not in the dictionary, then it is added with an associated item provided by the default constructor for type mapped_type.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::remove ( bool(*)(const_reference, void *)  fn, void *  d  )

inline

Removes the first association a in self such that the expression ((*fn)(a,d)) is true, and returns true. Returns false if there is no such element. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

bool RWTValHashMap< K, T, H, EQ, A >::remove ( const key_type &  key )

inline

Removes the first association with key j in self such that the expression (j == key) is true, and returns true. Returns false if there is no such association.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::removeAll	(	bool(*)(const_reference, void *)	fn,
		void *	d
	)

Removes all associations a in self such that the expression ((*fn)(a,d)) is true. Returns the number of items removed. Client data may be passed through parameter d.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

size_type RWTValHashMap< K, T, H, EQ, A >::removeAll ( const key_type &  key )

inline

Removes all elements j in self that compare equal to key. Returns the number of items removed.

Note

This method requires the type mapped_type to have a default constructor.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

void RWTValHashMap< K, T, H, EQ, A >::resize ( size_type  sz )

inline

Changes the capacity of self by creating a new hashed map with a capacity of sz. This method copies every element of self into the new container and finally swaps the internal representation of the new container with the internal representation of self.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

container_type& RWTValHashMap< K, T, H, EQ, A >::std ( )

inline

Returns a reference to the underlying collection that serves as the implementation for self. This reference may be used freely, providing access to the C++ Standard Library interface as well as interoperability with other software components that make use of the C++ Standard Library-compliant collections.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

const container_type& RWTValHashMap< K, T, H, EQ, A >::std ( ) const

inline

Returns a reference to the underlying collection that serves as the implementation for self. This reference may be used freely, providing access to the C++ Standard Library interface as well as interoperability with other software components that make use of the C++ Standard Library-compliant collections.

template<class K, class T, class H = RWTHash<K>, class EQ = std::equal_to<K>, class A = std::allocator<K>>

void RWTValHashMap< K, T, H, EQ, A >::swap ( RWTValHashMap< K, T, H, EQ, A > &  other )

inline

Swaps the data held by self with the data held by other, including the H and EQ objects. This method does not copy or destroy any of the items swapped; rather, it swaps the underlying hash tables.

Friends And Related Function Documentation

template<class K , class T , class H , class EQ , class A >

bool operator!= ( const RWTValHashMap< K, T, H, EQ, A > &  lhs, const RWTValHashMap< K, T, H, EQ, A > &  rhs  )

related

Equivalent to !(lhs == rhs).

template<class K , class T , class H , class EQ , class A >

bool operator!= ( const RWTValHashMap< K, T, H, EQ, A > &  lhs, const typename RWTValHashMap< K, T, H, EQ, A >::container_type &  rhs  )

related

Equivalent to !(lhs == rhs).

template<class K , class T , class H , class EQ , class A >

bool operator!= ( const typename RWTValHashMap< K, T, H, EQ, A >::container_type &  lhs, const RWTValHashMap< K, T, H, EQ, A > &  rhs  )

related

Equivalent to !(lhs == rhs).

template<class K , class T , class H , class EQ , class A >

RWvostream & operator<< ( RWvostream &  strm, const RWTValHashMap< K, T, H, EQ, A > &  coll  )

related

Saves the collection coll onto the output stream strm, or a reference to it if it has already been saved.

template<class K , class T , class H , class EQ , class A >

RWFile & operator<< ( RWFile &  strm, const RWTValHashMap< K, T, H, EQ, A > &  coll  )

related

Saves the collection coll onto the RWFile strm, or a reference to it if it has already been saved.

template<class K , class T , class H , class EQ , class A >

bool operator== ( const RWTValHashMap< K, T, H, EQ, A > &  lhs, const RWTValHashMap< K, T, H, EQ, A > &  rhs  )

related

Returns true if lhs and rhs are equal, otherwise false. Two collections are equal if both have the same number of entries, and if for each key in the first container, the set of values associated with that key is equal to the set of values associated with that key in the second container.

Note

This method requires the type mapped_type to have a default constructor.

template<class K , class T , class H , class EQ , class A >

bool operator== ( const RWTValHashMap< K, T, H, EQ, A > &  lhs, const typename RWTValHashMap< K, T, H, EQ, A >::container_type &  rhs  )

related

Returns true if lhs and rhs are equal, otherwise false. Two collections are equal if both have the same number of entries, and if for each key in the first container, the set of values associated with that key is equal to the set of values associated with that key in the second container.

Note

This method requires the type mapped_type to have a default constructor.

template<class K , class T , class H , class EQ , class A >

bool operator== ( const typename RWTValHashMap< K, T, H, EQ, A >::container_type &  lhs, const RWTValHashMap< K, T, H, EQ, A > &  rhs  )

related

Returns true if lhs and rhs are equal, otherwise false. Two collections are equal if both have the same number of entries, and if for each key in the first container, the set of values associated with that key is equal to the set of values associated with that key in the second container.

Note

This method requires the type mapped_type to have a default constructor.

template<class K , class T , class H , class EQ , class A >

RWvistream & operator>> ( RWvistream &  strm, RWTValHashMap< K, T, H, EQ, A > &  coll  )

related

Restores the contents of the collection coll from the input stream strm.

template<class K , class T , class H , class EQ , class A >

RWFile & operator>> ( RWFile &  strm, RWTValHashMap< K, T, H, EQ, A > &  coll  )

related

Restores the contents of the collection coll from the RWFile strm.

template<class K , class T , class H , class EQ , class A >

RWvistream & operator>> ( RWvistream &  strm, RWTValHashMap< K, T, H, EQ, A > *&  p  )

related

Looks at the next object on the input stream strm and either creates a new collection off the heap and sets p to point to it, or sets p to point to a previously read instance. If a collection is created off the heap, then the application is responsible for deleting it.

template<class K , class T , class H , class EQ , class A >

RWFile & operator>> ( RWFile &  strm, RWTValHashMap< K, T, H, EQ, A > *&  p  )

related

Looks at the next object on the RWFile strm and either creates a new collection off the heap and sets p to point to it, or sets p to point to a previously read instance. If a collection is created off the heap, then the application is responsible for deleting it.