bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare Class Reference

#include <bslstl_map.h>

Public Types
typedef bool	result_type
typedef value_type	first_argument_type
typedef value_type	second_argument_type

Public Member Functions
	value_compare (const value_compare &original)=default
	~value_compare ()=default
value_compare &	operator= (const value_compare &rhs)=default
bool	operator() (const value_type &x, const value_type &y) const

Protected Member Functions
	value_compare (COMPARATOR comparator)

Protected Attributes
COMPARATOR	comp

Friends
class	map

Detailed Description

template<class KEY, class VALUE, class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>
class bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare

This nested class defines a mechanism for comparing two objects of value_type by adapting an object of (template parameter) type COMPARATOR, which compares two objects of (template parameter) type KEY . Note that this class exactly matches its definition in the C++11 standard [map.overview]; otherwise, we would have implemented it as a separate component-local class.

See bslstl_map

Member Typedef Documentation

first_argument_type

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

typedef value_type bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::first_argument_type

This typedef is an alias for the type of the first parameter of the overload of operator() (the comparison function) provided by a map::value_compare object.

result_type

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

typedef bool bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::result_type

This typedef is an alias for the result type of a call to the overload of operator() (the comparison function) provided by a map::value_compare object.

second_argument_type

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

typedef value_type bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::second_argument_type

This typedef is an alias for the type of the second parameter of the overload of operator() (the comparison function) provided by a map::value_compare object.

Constructor & Destructor Documentation

value_compare() [1/2]

template<class KEY , class VALUE , class COMPARATOR , class ALLOCATOR >

bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::value_compare ( COMPARATOR  comparator )

inlineprotected

Create a value_compare object that uses the specified comparator.

value_compare() [2/2]

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::value_compare ( const value_compare &  original )

default

~value_compare()

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::~value_compare ( )

default

Member Function Documentation

operator()()

template<class KEY , class VALUE , class COMPARATOR , class ALLOCATOR >

bool bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::operator() ( const value_type &  x, const value_type &  y  ) const

inline

Return true if the specified x object is ordered before the specified y object, as determined by the comparator supplied at construction, and false otherwise.

operator=()

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

value_compare & bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::operator= ( const value_compare &  rhs )

default

Friends And Related Symbol Documentation

map

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

friend class map

friend

Member Data Documentation

comp

template<class KEY , class VALUE , class COMPARATOR = std::less<KEY>, class ALLOCATOR = allocator<pair<const KEY, VALUE> >>

COMPARATOR bsl::map< KEY, VALUE, COMPARATOR, ALLOCATOR >::value_compare::comp

protected

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

• bslstl_map.h