[#bitset_detail-IntBitSet-begin]
= xref:bitset_detail.adoc[bitset&lowbar;detail]::xref:bitset_detail/IntBitSet.adoc[IntBitSet]::begin
:relfileprefix: ../../
:mrdocs:

Return an object that iterates over all 1 bits (&plus;&plus; and &ast; only allowed when !&equals; end())&period;

== Synopsis

Declared in `&lt;util&sol;bitset&period;h&gt;`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:bitset_detail/IntBitSet.adoc[Iterator]
begin() const noexcept;
----

== Return Value

An iterator to the first set bit&period;


[.small]#Created with https://www.mrdocs.com[MrDocs]#
