[#bitset_detail-MultiIntBitSet-First]
= xref:bitset_detail.adoc[bitset_detail]::xref:bitset_detail/MultiIntBitSet.adoc[MultiIntBitSet]::First
:relfileprefix: ../../
:mrdocs:

Find the first element (requires Any()).

== Synopsis

Declared in `<util/bitset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
unsigned int
First() const noexcept;
----

== Return Value

The position of the lowest set bit.


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