[#bsl-multiset-03-2constructor-0f]
= xref:bsl.adoc[bsl]::xref:bsl/multiset-03.adoc[multiset]::multiset
:relfileprefix: ../../
:mrdocs:

Create a multiset and insert each `value_type` object in the specified `values` initializer list. Optionally specify a `comparator` used to order keys contained in this object. If `comparator` is not supplied, a default‐constructed object of the (template parameter) type `COMPARATOR` is used. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is not supplied, a default‐constructed object of the (template parameter) type `ALLOCATOR` is used. If the type `ALLOCATOR` is `bsl::allocator` and `basicAllocator` is not supplied, the currently installed default allocator is used. If `values` is ordered according to `comparator`, then this operation has `O[N]` complexity, where `N` is the number of elements in `values`; otherwise this operation has `O[N * log(N)]` complexity. This method requires that the (template parameter) type `KEY` be `copy‐insertable` into this multiset (see {Requirements on `KEY`}). Note that a `bslma::Allocator *` can be supplied for `basicAllocator` if the type `ALLOCATOR` is `bsl::allocator` (the default).

== Synopsis

Declared in `<bslstl_multiset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
multiset(
    std::initializer_list<KEY> values,
    COMPARATOR const& comparator = COMPARATOR(),
    ALLOCATOR const& basicAllocator = ALLOCATOR());
----


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