[#absl-operator_bitnot-018]
= xref:absl.adoc[absl]::operator~
:relfileprefix: ../
:mrdocs:

Computes the complement of a character set.

== 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);
----

== Return Value

A set containing every character not present in `a`.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *a*
| The operand to complement.
|===


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