[#bsl-unordered_set-02a-2constructor-07d] = xref:bsl.adoc[bsl]::xref:bsl/unordered_set-02a.adoc[unordered_set<ManagedAttribute, AttributeHash>]::unordered_set :relfileprefix: ../../ :mrdocs: Create an empty unordered set using the specified `basicAllocator`. == Synopsis Declared in `<bslstl_unorderedset.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- explicit unordered_set(xref:bsl/allocator-0df.adoc[allocator<ManagedAttribute>] const& basicAllocator); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#