bdlb::TransparentHash Struct Reference

#include <bdlb_transparenthash.h>

Public Types
typedef void	is_transparent
	Type alias indicating this is a transparent hash functor.

Public Member Functions
	TransparentHash ()=default
	Create a TransparentHash object.
	TransparentHash (const TransparentHash &original)=default
	~TransparentHash ()=default
	Destroy this object.
TransparentHash &	operator= (const TransparentHash &rhs)=default
template<class TYPE >
std::size_t	operator() (const TYPE &value) const

Detailed Description

This struct defines a hash operation for different types, enabling them for use for heterogeneous lookup in the standard associative containers such as bsl::unordered_map. Note that this class is an empty POD type.

Member Typedef Documentation

is_transparent

typedef void bdlb::TransparentHash::is_transparent

Constructor & Destructor Documentation

TransparentHash() [1/2]

bdlb::TransparentHash::TransparentHash ( )

default

TransparentHash() [2/2]

bdlb::TransparentHash::TransparentHash ( const TransparentHash &  original )

default

Create a TransparentHash object. Note that as TransparentHash is an empty (stateless) type, this operation has no observable effect.

~TransparentHash()

bdlb::TransparentHash::~TransparentHash ( )

default

Member Function Documentation

operator()()

template<class TYPE >

std::size_t bdlb::TransparentHash::operator() ( const TYPE &  value ) const

inline

Return a hash code generated from the contents of the specified value.

operator=()

TransparentHash & bdlb::TransparentHash::operator= ( const TransparentHash &  rhs )

default

Assign to this object the value of the specified rhs object, and return a reference providing modifiable access to this object. Note that as TransparentHash is an empty (stateless) type, this operation has no observable effect.

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

• bdlb_transparenthash.h