bsl::unordered_multiset::reserve

Declared in <bslstl_unorderedmultiset.h>

Increase the number of buckets of this unordered multiset to a quantity such that the ratio between the specified numElements and this quantity does not exceed max_load_factor. Note that this guarantees that, after the reserve, elements can be inserted to grow the container to size() == numElements without rehashing. Also note that memory allocations may still occur when growing the container to size() == numElements. Also note that this operation has no effect if numElements <= size().

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