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# HashMap3

A 3-dimensional hash map. More...

Inheritance diagram for xpress::maps::HashMap3< K1, K2, K3, V >:

## Public Member Functions
bool | contains (K1 const &key1, K2 const &key2, K3 const &key3) const
| Test whether `(key1,key2,key3)` exists.
bool | containsKey (K1 const &key1, K2 const &key2, K3 const &key3) const
| Test whether `(key1,key2,key3)` exists.
V | get (K1 const &key1, K2 const &key2, K3 const &key3) const
| Get the value for tuple `(key1,key2,key3)`.
V | operator() (K1 const &key1, K2 const &key2, K3 const &key3) const
| Get the value for tuple `(key1,key2,key3)`.
void | put (K1 const &key1, K2 const &key2, K3 const &key3, V value)
| Map `(key1,key2,key3)` to `value`.

## Detailed Description

template<typename K1, typename K2, typename K3, typename V>
class xpress::maps::HashMap3< K1, K2, K3, V >

A 3-dimensional hash map.

Instances of this class map tuples with 3 elements to value and provide some convenience functions to access elements without having to explicitly construct the tuples. Tuples are mapped using their hash codes.

Since
  43.00

## Member Function Documentation

## contains()

template<typename K1 , typename K2 , typename K3 , typename V >

bool xpress::maps::HashMap3< K1, K2, K3, V >::contains | ( | K1 const & | key1,
|  | K2 const & | key2,
|  | K3 const & | key3 ) const
| inline

Test whether `(key1,key2,key3)` exists.

Since
  43.00

## containsKey()

template<typename K1 , typename K2 , typename K3 , typename V >

bool xpress::maps::HashMap3< K1, K2, K3, V >::containsKey | ( | K1 const & | key1,
|  | K2 const & | key2,
|  | K3 const & | key3 ) const
| inline

Test whether `(key1,key2,key3)` exists.

Since
  43.00

## get()

template<typename K1 , typename K2 , typename K3 , typename V >

V xpress::maps::HashMap3< K1, K2, K3, V >::get | ( | K1 const & | key1,
|  | K2 const & | key2,
|  | K3 const & | key3 ) const
| inline

Get the value for tuple `(key1,key2,key3)`.

Returns
  `null` the mapping does not exist.

Since
  43.00

## operator()()

template<typename K1 , typename K2 , typename K3 , typename V >

V xpress::maps::HashMap3< K1, K2, K3, V >::operator() | ( | K1 const & | key1,
|  | K2 const & | key2,
|  | K3 const & | key3 ) const
| inline

Get the value for tuple `(key1,key2,key3)`.

Returns
  `null` the mapping does not exist.

Since
  43.00

## put()

template<typename K1 , typename K2 , typename K3 , typename V >

void xpress::maps::HashMap3< K1, K2, K3, V >::put | ( | K1 const & | key1,
|  | K2 const & | key2,
|  | K3 const & | key3,
|  | V | value )
| inline

Map `(key1,key2,key3)` to `value`.

Since
  43.00

The documentation for this class was generated from the following file:

- xpress_maps.hpp

Parent Topic maps

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