bdlb::CStringHash Struct Reference

#include <bdlb_cstringhash.h>

Detailed Description

This struct defines a hash operation for null-terminated character strings enabling them to be used as keys in the standard unordered associative containers such as bsl::unordered_map and bsl::unordered_set.

Note

Note that this class is an empty POD type.

See bdlb_cstringhash

Public Types
typedef const char *	argument_type
typedef bsl::size_t	result_type

Public Member Functions
	BSLMF_NESTED_TRAIT_DECLARATION (CStringHash, bsl::is_trivially_copyable)
	BSLMF_NESTED_TRAIT_DECLARATION (CStringHash, bsl::is_trivially_default_constructible)
	CStringHash ()=default
	CStringHash (const CStringHash &original)=default
	~CStringHash ()=default
CStringHash &	operator= (const CStringHash &rhs)=default
bsl::size_t	operator() (const char *argument) const

Member Typedef Documentation

argument_type

typedef const char* bdlb::CStringHash::argument_type

result_type

typedef bsl::size_t bdlb::CStringHash::result_type

Constructor & Destructor Documentation

CStringHash() [1/2]

bdlb::CStringHash::CStringHash ( )

default

Create a CStringHash object.

CStringHash() [2/2]

bdlb::CStringHash::CStringHash ( const CStringHash &  original )

default

Create a CStringHash object.

Note

Note that as CStringHash is an empty (stateless) type, this operation will have no observable effect.

~CStringHash()

bdlb::CStringHash::~CStringHash ( )

default

Destroy this object.

Member Function Documentation

BSLMF_NESTED_TRAIT_DECLARATION() [1/2]

bdlb::CStringHash::BSLMF_NESTED_TRAIT_DECLARATION	(	CStringHash	,
		bsl::is_trivially_copyable
	)

BSLMF_NESTED_TRAIT_DECLARATION() [2/2]

bdlb::CStringHash::BSLMF_NESTED_TRAIT_DECLARATION	(	CStringHash	,
		bsl::is_trivially_default_constructible
	)

operator()()

bsl::size_t bdlb::CStringHash::operator() ( const char *  argument ) const

inline

Return a hash code generated from the contents of the specified null-terminated argument string.

Precondition

The behavior is undefined unless argument points to a null-terminated string.

operator=()

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

default

Assign to this object the value of the specified rhs object, and a return a reference providing modifiable access to this object.

Note

Note that as CStringHash is an empty (stateless) type, this operation will have no observable effect.

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

• bdlb_cstringhash.h