bsl::hash_map

Synopsis

Declared in <bslstp_hashmap.h>

template<
    class _Key,
    class _Tp,
    class _HashFcn = BloombergLP::bslstp::HashSelector<_Key>::Type,
    class _EqualKey = bsl::ComparatorSelector<_Key>::Type,
    class _Alloc = bsl::allocator<pair<_Key const, _Tp>>>
class hash_map;

Type Aliases

Name	Description
`_value_type`	Internal synonym for the element `pair` type.
`allocator_type`	Allocator type used by this map.
`const_iterator`	Iterator providing non-modifiable access to elements.
`const_pointer`	Pointer to a non-modifiable element.
`const_reference`	Reference to a non-modifiable element.
`data_type`	Mapped value type (synonym for `mapped_type`).
`difference_type`	Signed integral type used for iterator distances.
`hasher`	Hash functor type.
`iterator`	Iterator providing modifiable access to elements.
`key_equal`	Key-equality functor type.
`key_type`	Key type used by this container.
`mapped_type`	Type of the mapped value associated with each key.
`pointer`	Pointer to a modifiable element.
`reference`	Reference to a modifiable element.
`size_type`	Unsigned integral type used for sizes.
`value_type`	Element type stored in the map (`pair<const key, mapped>`).

Member Functions

Name	Description
`hash_map` [constructor]	Constructors
`begin`	`begin` overloads
`bucket_count`	Return the number of buckets in this container.
`clear`	Remove all elements from this map.
`count`	Return the number of elements matching the specified key.
`elems_in_bucket`	Return the number of elements in the specified bucket.
`empty`	Return `true` if this map contains no elements.
`end`	`end` overloads
`equal_range`	`equal_range` overloads
`erase`	`erase` overloads
`find`	`find` overloads
`get_allocator`	Return the allocator used by this map.
`hash_funct`	Return the hash functor used by this map.
`insert`	`insert` overloads
`insert_noresize`	Insert `__obj` without resizing the bucket vector if the key is new.
`key_eq`	Return the key-equality functor used by this map.
`max_bucket_count`	Return the maximum number of buckets this container can use.
`max_size`	Return an upper bound on the number of elements this map can hold.
`operator[]`	Return a reference to the mapped value for `__key`, inserting a default-constructed value if the key is absent.
`resize`	Rebuild the bucket vector using a size suggested by the specified hint.
`size`	Return the number of elements in this map.
`swap`	Exchange the contents of this map with those of the specified map.

Static Member Functions

Name	Description
`_M_equal`	Return `true` if the specified maps contain the same elements.

Non-Member Functions

Name	Description
`operator!=`	Return `true` if the specified hash maps do not contain the same elements.
`operator==`	Return `true` if the specified hash maps contain the same elements.
`swap`	Exchange the contents of the specified hash maps.