Reserve capacity for at least numElements elements.
Synopsis
Declared in <bslstl_unorderedset.h>
void
reserve(size_type numElements);Description
Increase the number of buckets of this set 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().
Parameters
Name |
Description |
numElements |
number of elements to reserve capacity for |
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