[#BloombergLP-bslstl-Variant_Base-2constructor-00] = xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/Variant_Base.adoc[Variant_Base]::Variant_Base :relfileprefix: ../../../ :mrdocs: Create a `Variant_Base` object holding the 0th alternative, which is value‐initialized. If this `Variant_Base` is allocator‐aware, the currently installed default allocator is used to supply memory. == Synopsis Declared in `<bslstl_variant.h>` [source,cpp,subs="verbatim,replacements,macros,-callouts"] ---- Variant_Base(); ---- [.small]#Created with https://www.mrdocs.com[MrDocs]#