[#BloombergLP-bdlc-FlatHashSet-2constructor-01] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bdlc.adoc[bdlc]::xref:BloombergLP/bdlc/FlatHashSet.adoc[FlatHashSet]::FlatHashSet :relfileprefix: ../../../ :mrdocs: Create a `FlatHashSet` object having the same value, hasher, and equality comparator as the specified `original` object. Optionally specify a `basicAllocator` used to supply memory. If `basicAllocator` is not specified or is 0, the currently installed default allocator is used. == Synopsis Declared in `<bdlc_flathashset.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- FlatHashSet( xref:BloombergLP/bdlc/FlatHashSet.adoc[FlatHashSet] const& original, xref:BloombergLP/bslma/Allocator.adoc[bslma::Allocator]* basicAllocator = 0); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#