[#BloombergLP-bslstl-operator_eq-0f]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::operator==
:relfileprefix: ../../
:mrdocs:

Return `true` if the specified `lhs` and `rhs` objects have the same value, and `false` otherwise. Two `HashTable` objects have the same value if they have the same number of elements, and for every subset of elements in `lhs` having keys that compare equal (according to that hash table's `comparator`), a corresponding subset of elements exists in `rhs`, having the same number of elements, where, for some permutation of the `lhs` subset, every element in that subset compares equal (using `operator==`) to the corresponding element in the `rhs` subset. The behavior is undefined unless both the `hasher` and `comparator` of `lhs` and `rhs` return the same value for every valid input. Note that this method requires that the `ValueType` of the parameterized `KEY_CONFIG` be "equality‐comparable" (see {Requirements on `KEY_CONFIG`}).

== Synopsis

Declared in `<bslstl_hashtable.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class KEY_CONFIG,
    class HASHER,
    class COMPARATOR,
    class ALLOCATOR>
bool
operator==(
    xref:BloombergLP/bslstl/HashTable-06.adoc[HashTable<KEY_CONFIG, HASHER, COMPARATOR, ALLOCATOR>] const& lhs,
    xref:BloombergLP/bslstl/HashTable-06.adoc[HashTable<KEY_CONFIG, HASHER, COMPARATOR, ALLOCATOR>] const& rhs);
----


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