[#BloombergLP-bslh-hashTuple_Util-02-visit]
= xref:BloombergLP.adoc[BloombergLP]::xref:BloombergLP/bslh.adoc[bslh]::xref:BloombergLP/bslh/hashTuple_Util-02.adoc[hashTuple_Util]::visit
:relfileprefix: ../../../
:mrdocs:

Invoke the (appropriate) `hashAppend` function using the specified `algorithm` and the "current" element of the specified `input` tuple and then visit the next element. The index of the current element is the size of (template parameter) `TUPLE_TYPE` minus (template parameter) `BACK_INDEX`. `BACK_INDEX` is reduced on each recursion and eventually, when `BACK_INDEX` is 0, a "do nothing" function is called to stop the recursion.

== Synopsis

Declared in `<bslh_hashtuple.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
static
void
visit(
    HASH_ALGORITHM& algorithm,
    TUPLE_TYPE const& input);
----


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