[#GenTxid-swap]
= xref:GenTxid.adoc[GenTxid]::swap
:relfileprefix: ../
:mrdocs:

== Synopsis

Declared in `<primitives/transaction_identifier.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<bool _Dummy = true>
requires __all<(__dependent_type<is_move_constructible<_Types>, _Dummy>::value &&
                                 __dependent_type<is_swappable<_Types>, _Dummy>::value)...>::value
[[__exclude_from_explicit_instantiation__, __abi_tag__]]
constexpr
void
swap(variant<transaction_identifier<false>, transaction_identifier<true>>& __that) noexcept(/* see-below */);
----

== Exception specification

This function is potentially-throwing unless `__all<(is_nothrow_move_constructible_v<_Types> && is_nothrow_swappable_v<_Types>)...>::value`.


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