absl::btree_multiset

Synopsis

Declared in <absl/container/btree_set.h>

template<
    typename Key,
    typename Compare = std::less<Key>,
    typename Alloc = std::allocator<Key>>
class btree_multiset
    : public /* implementation-defined */::btree_multiset_container</* implementation-defined */::btree</* implementation-defined */>>

Description

An absl::btree_multiset<K> is an ordered associative container of keys and associated values designed to be a more efficient replacement for std::multiset (in most cases). Unlike absl::btree_set, a B-tree multiset allows equivalent elements.

Keys are sorted using an (optional) comparison function, which defaults to std::less<K>.

An absl::btree_multiset<K> uses a default allocator of std::allocator<K> to allocate (and deallocate) nodes, and construct and destruct values within those nodes. You may instead specify a custom allocator A (which in turn requires specifying a custom comparator C) as in absl::btree_multiset<K, C, A>.

Base Classes

Name	Description
`/* implementation-defined /::btree_multiset_container</ implementation-defined /::btree</ implementation-defined */>>`

Type Aliases

Name
`allocator_type`
`const_iterator`
`iterator`
`key_compare`
`key_type`
`node_type`
`size_type`
`value_type`

Member Functions

Name	Description
`btree_multiset` [constructor]	Constructs an empty `btree_multiset`.
`emplace`
`emplace_hint`
`extract`
`insert`
`merge`

Using Declarations

Name
`Unnamed using`
`begin`
`cbegin`
`cend`
`clear`
`contains`
`count`
`emplace`
`emplace_hint`
`empty`
`end`
`equal_range`
`erase`
`extract`
`extract_and_get_next`
`find`
`get_allocator`
`insert`
`key_comp`
`lower_bound`
`max_size`
`merge`
`size`
`swap`
`upper_bound`
`value_comp`

Non-Member Functions

Name	Description
`erase_if`	Erases all elements that satisfy the predicate `pred` from the container.
`swap`	Swaps the contents of two `absl::btree_multiset` containers.