[#GenTxid-emplace-0f]
= xref:GenTxid.adoc[GenTxid]::emplace
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<primitives/transaction_identifier.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    size_t _Ip,
    class _Up,
    class... _Args,
    class _Tp = variant_alternative_t<_Ip, variant<transaction_identifier<false>, transaction_identifier<true>>>>
requires (_Ip < sizeof...(_Types)) && is_constructible_v<_Tp, initializer_list<_Up>&, _Args...>
[[__exclude_from_explicit_instantiation__, __abi_tag__]]
constexpr
_Tp&
emplace(
    initializer_list<_Up> __il,
    _Args&&... __args);
----


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