[#beman-optional-operator_eq-0b]
= xref:beman.adoc[beman]::xref:beman/optional.adoc[optional]::operator==
:relfileprefix: ../../
:mrdocs:

Compares a value against an engaged optional's value for equality.

== Synopsis

Declared in `<beman/optional/optional.hpp>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    typename T,
    typename U>
constexpr
bool
operator==(
    T const& lhs,
    xref:beman/optional/optional-03.adoc[optional<U>] const& rhs)
requires (!detail::is_optional<T>) && detail::optional_eq_rel<T, U>;
----

== Return Value

`true` if `rhs` is engaged and `lhs` equals its contained value.

== Parameters

[cols="1,4"]
|===
| Name| Description
| *lhs*
| The value operand.
| *rhs*
| The optional operand.
|===


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