[#absl-operator_bitand-04]
= xref:absl.adoc[absl]::operator&
:relfileprefix: ../
:mrdocs:

Computes the intersection of two character sets.

== Synopsis

Declared in `<absl/strings/charset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
constexpr
xref:absl/CharSet.adoc[CharSet]
operator&(
    xref:absl/CharSet.adoc[CharSet] const& a,
    xref:absl/CharSet.adoc[CharSet] const& b);
----

[NOTE]
====
This function is a https://en.cppreference.com/w/cpp/language/friend[hidden friend] of xref:absl/CharSet.adoc[CharSet], declared only inside that class: it can be found only through argument-dependent lookup.
====

== Return Value

A set with the characters present in both `a` and `b`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| The left‐hand operand.
| *b*
| The right‐hand operand.
|===


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