[#bsl-operator_not_eq-023]
= xref:bsl.adoc[bsl]::operator!=
:relfileprefix: ../
:mrdocs:

Return `true` if the specified `lhs` and `rhs` have different active alternatives or only one holds an alternative, or if they have the same active alternative and the contained values compare unequal; otherwise, return `false`. All alternatives shall support `operator!=`.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_HEAD,
    class... t_TAIL>
bool
operator!=(
    xref:bsl/variant.adoc[variant<t_HEAD, t_TAIL...>] const& lhs,
    xref:bsl/variant.adoc[variant<t_HEAD, t_TAIL...>] const& rhs);
----


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