Create an unordered multimap and insert each value_type object in the specified values initializer list. Optionally specify an initialNumBuckets indicating the minimum initial size of the array of buckets of this container. If initialNumBuckets is not supplied, a single empty bucket is used if values is empty, and an unspecified number of buckets is used otherwise. Optionally specify a hashFunction used to generate the hash values for the keys contained in this unordered multimap. If hashFunction is not supplied, a default-constructed object of the (template parameter) type HASH is used. Optionally specify a key-equivalence functor keyEqual used to verify that two keys are equivalent. If keyEqual is not supplied, a default-constructed object of the (template parameter) type EQUAL 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 to supply memory. This method requires that the (template parameter) types KEY and VALUE both be copy-insertable into this unordered multimap (see {Requirements on KEY and VALUE}). Note that a bslma::Allocator * can be supplied for basicAllocator if the type ALLOCATOR is bsl::allocator (the default).
Declared in <bslstl_unorderedmultimap.h>
template<
class = void,
class = void,
class = void>
requires std::is_invocable_v<HASH, const KEY &> && std::is_invocable_v<EQUAL, const KEY &, const KEY &> && bsl::IsStdAllocator_v<ALLOCATOR>
unordered_multimap(
std::initializer_list<value_type> values,
size_type initialNumBuckets = 0,
HASH const& hashFunction = HASH(),
EQUAL const& keyEqual = EQUAL(),
ALLOCATOR const& basicAllocator = ALLOCATOR());