[#BloombergLP-bslstl-HashTable_ComparatorWrapper-07]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslstl.adoc[bslstl]::xref:BloombergLP/bslstl/HashTable_ComparatorWrapper-0e.adoc[HashTable_ComparatorWrapper]<FUNCTOR&>
:relfileprefix: ../../
:mrdocs:

This partial specialization handles `const` qualified functors, that may not be stored as a `mutable` member in the primary template. Note that the `FUNCTOR` type itself may be `const`‐qualified, so this one partial template specialization also handles `const FUNCTOR&` references. In order to correctly parse with the reference‐binding rules, we drop the `const` in front of many of the references to `FUNCTOR` seen in the primary template definition. Note that this type has a reference data member, so is not default constructible, assignable or swappable.

== Synopsis

Declared in `<bslstl_hashtable.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<class FUNCTOR>
class xref:BloombergLP/bslstl/HashTable_ComparatorWrapper-0e.adoc[HashTable_ComparatorWrapper]<FUNCTOR&>;
----

== Member Functions

[cols="1,4"]
|===
| Name| Description
| xref:BloombergLP/bslstl/HashTable_ComparatorWrapper-07/2constructor.adoc[`HashTable_ComparatorWrapper`]         [.small]#[constructor]#
| Create a `HashTable_ComparatorWrapper` object wrapping a `FUNCTOR` that is a copy of the specified `fn`.
| xref:BloombergLP/bslstl/HashTable_ComparatorWrapper-07/functor.adoc[`functor`] 
| Return a reference providing non‐modifiable access to the hash functor wrapped by this object.
| xref:BloombergLP/bslstl/HashTable_ComparatorWrapper-07/operator_call.adoc[`operator()`] 
| Call the wrapped `functor` with the specified `arg1` and `arg2` (in that order) and return the result. Note that `ARGn_TYPE` will typically be deduced as a `const` type.
|===



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