bslstl::HashTable_HashWrapper< FUNCTOR > Class Template Reference

#include <bslstl_hashtable.h>

Public Member Functions
	HashTable_HashWrapper ()
	HashTable_HashWrapper (const FUNCTOR &fn)
void	swap (HashTable_HashWrapper &other)
	Exchange the value of this object with the specified other object.
template<class ARG_TYPE >
std::size_t	operator() (ARG_TYPE &arg) const
const FUNCTOR &	functor () const

Detailed Description

template<class FUNCTOR>
class bslstl::HashTable_HashWrapper< FUNCTOR >

This class provides a wrapper around a functor satisfying the Hash requirements (bslstl_hash ) such that the function call operator is always declared as const qualified.

TBD Provide an optimization for the case of an empty base functor, where we can safely const_cast want calling the base class operator.

Note that we would only one class, not two, with C++11 variadic templates and perfect forwarding, and we could also easily detect whether or not FUNCTOR provided a const-qualified operator().

See bslstl_hashtable

Constructor & Destructor Documentation

HashTable_HashWrapper() [1/2]

template<class FUNCTOR >

bslstl::HashTable_HashWrapper< FUNCTOR >::HashTable_HashWrapper ( )

inline

Create a HashTable_HashWrapper object wrapping a FUNCTOR that has its default value.

HashTable_HashWrapper() [2/2]

template<class FUNCTOR >

bslstl::HashTable_HashWrapper< FUNCTOR >::HashTable_HashWrapper ( const FUNCTOR &  fn )

inlineexplicit

Create a HashTable_HashWrapper object wrapping a FUNCTOR that is a copy of the specified fn.

Member Function Documentation

functor()

template<class FUNCTOR >

const FUNCTOR & bslstl::HashTable_HashWrapper< FUNCTOR >::functor ( ) const

inline

Return a reference providing non-modifiable access to the hash functor wrapped by this object.

operator()()

template<class FUNCTOR >

template<class ARG_TYPE >

std::size_t bslstl::HashTable_HashWrapper< FUNCTOR >::operator() ( ARG_TYPE &  arg ) const

inline

Call the wrapped functor with the specified arg and return the result. Note that ARG_TYPE will typically be deduced as a const type.

swap()

template<class FUNCTOR >

void bslstl::HashTable_HashWrapper< FUNCTOR >::swap ( HashTable_HashWrapper< FUNCTOR > &  other )

inline

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

• bslstl_hashtable.h