[#bsl-hashAppend-01]
= xref:bsl.adoc[bsl]::hashAppend
:relfileprefix: ../
:mrdocs:

Pass the specified `input` to the specified `hashAlg`, where `hashAlg` is a hashing algorithm.

== Synopsis

Declared in `<bslstl_variant.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
template<
    class t_HASHALG,
    class t_HEAD,
    class... t_TAIL>
void
hashAppend(
    t_HASHALG& hashAlg,
    xref:bsl/variant.adoc[variant<t_HEAD, t_TAIL...>] const& input);
----


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