[#bsl-operator_eq-0b3]
= xref:bsl.adoc[bsl]::operator==
:relfileprefix: ../
:mrdocs:

Return `true` if the specified `lhs` and `rhs` objects have the same value, and `false` otherwise. Two `unordered_set` objects have the same value if they have the same number of value‐elements, and for each value‐element that is contained in `lhs` there is a value‐element contained in `rhs` having the same value, and vice‐versa. Note that this method requires that the (template parameter) type `KEY` be `equality‐comparable` (see {Requirements on `KEY`}).

== Synopsis

Declared in `<bslstl_unorderedset.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY,
    class HASH,
    class EQUAL,
    class ALLOCATOR>
bool
operator==(
    xref:bsl/unordered_set-0d2d.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>] const& lhs,
    xref:bsl/unordered_set-0d2d.adoc[unordered_set<KEY, HASH, EQUAL, ALLOCATOR>] const& rhs);
----


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